Get crackalackin’

As Fall is here, it is time to put together a To Do list of everything I have been putting off all Summer and the beginning of the school year.


I have four of these rigs and they need some TLC. I need to make sure they have the updated firmware on the main unit, TNC, and operating panel.

The latest versions:
TNC: 1.02 – May 2011
Operating Panel: 2.12 – Janurary 2015
Main unit: 2.10 – May 2011

For the benifit of emergency operations, I have been performing the modificiation to the TM-D710As to open the frequency range.

Standard frequency plan. I developed a spreadsheet of the repeaters in the greater Kansas City area, frequecies for FRS/GMRS, the Kansas City Airport (MCI), Sherman Army Airfield, and various national park frequency plans. This is the first step in standardizing the configuration across all four of the TM-D710As. I can additionally take the spreadsheet and use it for programming my HTs. This should allow for a memory channel standardization that will make my life easier.

Weather Station

The current Davis Vantage Pro2 I have installed on the roof needs maintenance. Wouldn’t it be nice to get the top of the line version?

For some time I have been talking about finding a weather station setup that will work with a linux-based computer. That quest continues. I have read about a piece of software called Meteo that is suppose to work with Xastir.

And if I can’t get Xastir to work with the Vantage Pro2… is there another comparable weather station that WILL work with Xastir? Life would be a lot easier without Windows.

HF Antenna for home

I need to string up the Carolina Windom I have had sitting on the shelf for the last few years. The G5RV that is up now is showing its age (not to mention one of the legs is drooping badly). Now that the leaves have fallen, I should be able to get the Windom up there without too many problems (… famous last words).

HF setup in the mobile

Time to get going. I have all the materials I need. What I don’t have is an installation plan… mainly for the Tarheel antenna. I can’t do a hitch mount because I need the hitch for pulling my travel trailer. Two possible options: (a) get a swinging gate for the back bumper where you could mount a spare tire and a water can or (b) find some way to afix a mount coming out behind the left rear tire.

Homebrew Weather Prediction?

I enjoy having a weather station at home. It is hooked up to APRS,, and I even have a weather webpage. One of the standard exchanges of information in most general QSOs is the weather: temperature, rain, …. I also like telling the folks in Florida that my humidity is 40% (I am not a fan of humidity having expierenced Fort Benning, GA in the summertime and monsoon season in Korea, not to mention my unairconditioned room at The Citadel (although I hear they have air conditioning now!)). It is easy to look at my desktop display and get all the data I need. I have heard of some folks who have a way to pull their weather data directly from their weather stations and input it into their PSK QSOs. Pretty slick, but I have never figured out how to do that (… yet).

All that being said, I do not get into weather prediction that much. If I see the barometer dropping, I may check the locak National Weather Service radar to see if anything is moving in (weather here moves from west to east). But if I wanted to get into weather prediction, this would make an interesting homebrew project: The Tempest Prognosticator.

Developed in the 1850s by Dr. George Merryweather, this device used leeches that would ring a bell if a storm was approaching. The device was even featured in Britian’s Great Exhibition of 1851. Despite the publicity, Dr. Merryweather was never able to get the government interested in putting the device into use.

I am sure there would be a way to interface the slugs with some kinda of Arduino device that would send out weather predicitions via APRS data. 🙂

Ham radio and my year in Korea

Here is a a re-cap of my amateur radio activities during my past twelve months in Korea:

(1) DX – I enjoyed working a good bit of DX, enjoying most QSOs with stateside contacts as well as Pacific exotics. The greatest limitation I had was my operation location and resulting inability to ideally situate an HF antenna. Living in the barracks (the ultimate in CC&R) restricted any type of permanent antenna installation, further limiting my options. I solely used a Buddipole (which after many additional accessory purchases, became two Buddipoles). Despite the antennas being positioned next to a three story building, I was able to make contacts to North America, South America, Europe, and even Africa. I credit this to improved band conditions over the past months and also the Buddipole… it’s a keeper.

(2) EchoIRLP node – I brought my embedded EchoIRLP node to Korea and interfaced it with a Kenwood VHF/UHF rig. Again, with my poor location and inability, I could not have an antenna installed outdoors. Instead, I kept the Kenwood rig at its minimum wattage setting and used a roll-up J-Pole made from ladder line. With my HT also set on minimum power, I was able to make effective use of the EchoIRLP node. My primary contacts via the node were with the XYL back in Kansas. She has a mobile VHF rig, to include APRS. I could check to see when she was on the road for her morning or afternoon commutes, connect through my EchoIRLP node here in Korea to our EchoIRLP node back in Kansas. With the XYL’s rig set to the frequency of the Kansas node, I could frequently ride along with the XYL and harmonics as they moved about. Additionally, the Echolink capability of the embedded node allowed me to regularly talk to my dad, KD6EUG, while he connected to my node via an app on his cell phone. Another great enjoyment was the ability to monitor the different IRLP reflectors and sometimes participate in ongoing nets. I am sold on the flexability of the embedded EchoIRLP node and will take it with me again when I get deployed for a long duration.

(3) D-STAR – starting with a D-STAR Dongle, I moved to a DV Access Point and got an ICOM D-STAR HT. I enjoyed playing with D-STAR and the ease of having the Access Point as well as the IC-92AD ( made using D-STAR pretty straight forward. There is no aruging that the audio quality for D-STARS is poor. The complicated nature of setting up a rig at home for the XYL would also make D-STAR a poor choice to replace the EchoIRLP node. However, I enjoyed having the flexibility of having the ability of getting on D-STAR.

(4) Linux – all my radio operations here were supported by using the Ubuntu distrobution of Linux. After toying with CQRlog, I have settled on fldigi as my primary interface to my HF rig.

(5) APRS – although my APRS operations here were limited to the internet (Korea has virtually no APRS traffic), I used xastir ( to show where my operating location was and also advertised my EchoIRLP node.

(6) WX station – never happen. I could not find a good location to place the collector, so it is still in the box. More importantly, wgoohat I didn’t get the opportunity to learn was how to interface a weather station to the APRS application xastir.

(7) Stars & Stripes article – I was able to discuss my amateur radio experiences with a reporter from Stars & Stripes.

The Ham Notebook

I got my March issue of CQ Magazine and enjoyed the renaming of the Beginner’s Corner column to The Ham Notebook. Columnist Wayne Yoshida, KH6WZ, explains the name change to reflect a column that contains information that every ham should know. Continuing on the notebook theme, Wayne notes the importance of record keeping for on air activity, a way to track contacts for the various awards, changes to the station setup (to include antenna modification, addition of new radios, etc.), and as a project log to reflect what’s on the bench. He points out this “notebook” can be kept in a hard copy format or digitally based to take advantage of quick searches for what you are looking for.
I couldn’t agree more with Wayne. To an extent, I’ve used this blog to keep notes on what I am doing and record successes and failures. I use the blog as a reference consistently. I am a little less disciplined about keeping a dedicated hard copy notebook. I have many of them floating around but I need to make it a regular habit of using the hard copy journal to keep track of what’s going on in the shack.
Speaking of what’s going on – I had the computer that was running my weather station and APRS go down.

The Shuttle K45 is a minimalist piece of hardware that I picked up about 18 months ago. Friday at 6pm the K45 died. I did a cursory inspection of the computer and didn’t notice anything miss. I did some minor troubleshooting to no avail. I figured it was probably the power supply. I took the computer to a local repair shop who determined that it was the motherboard that had gone bad. Back home with a bit of internet research I found that the dead motherboard was an epidemic caused by a handful of bad capacitors. I am going to try to swap out the bad ones and see if I can bring the K45 back to life.
Meanwhile I have swapped in an older computer that I had been using some time back to run the weather station and APRS.

Sunday Snowy Sunday

Lots of snow here on the eastern edge of Kansas. We got a good dump of slush on Friday but with the temp too high none of it stuck. Then Saturday afternoon the temp dropped below 32d F and decided to stay around 29d F. Saturday night the snow started coming down and has not stopped since.
The snow has been a big hit with Sarah:

My trusty Toyota Tundra (no recalls yet… keeping my fingers crossed) is wearing a nice, thick coat of snowy goodness:

I’ve rekindled my interest in EchoLink and now have a full blown EchoIRLP node (EchoLink Node #496698 and IRLP Node #3370) and am using a TM-D710A to run the node as well as my APRS weather station. What I have been enjoying most so far about IRLP is the ability to tweak and play with the linux software via a (or multiple) terminal session(s). It is helping me improve my linux skills.

Speaking of linux, I have been piecing together my iPORTABLE-mounted station. Each box comfortably fits two components. Box #1 has an IC-7000 and an LDG AT-200pro tuner. Box #2 has a Dell Zino HD and an Alinco DM-330MV power supply. Box #3 will have an embedded EchoIRLP node and a TM-D710A. Box#1 and #2 are already assembled and it makes for a nice, portable working station. Back to linux… it has long been a desire of mine to switch as much of my computing to Ubuntu as possible. Currently the Dell Zino has a dual boot configuration of Vista (which was already installed) and Ubuntu 9.10. I have been trying to put together a nice amateur radio software collection on the Zino and have had mixed results. For rig control, it is hard to beat the Windows program Ham Radio Deluxe. The closest linux version I’ve been able to find is an application called Grig. Not quite what I want to take advantage of all the bells and whistles that the IC-7000 has. I’ve been listening to the excellent podcast Linux in the Ham Shack for recommendations (episode #13 is dedicated to rig control), perusing the January 2010 issue of Linux Journal (the issue is dedicated to Amateur Radio and Linux), and am also looking at shackbox, which is a linux distribution designed with amateur radio in mind. I think I am going to give shackbox a try and see how it goes.

… all of this on a snowy Sunday.

If you get a chance, connect to my EchoIRLP node (EchoLink Node #496698 and IRLP Node #3370) and say hello. You’ll help me procrastinate in finishing my paper on the Army Amateur Radio System.

Here Comes the Sun

After a week of cold temps here on the eastern edge of Kansas, it looks like we are finally going to see some relief and also bid farewell to all the snow that’s been hanging around.

Some initial high temps back around New Year’s Eve was able to melt a bit of the snow around my weather station perched way up on our roof. Then temps dropped and my wind vane froze pointing almost north (indicated by the solid red line at the top of the graph).

Some increased sunlight and rising temps finally freed the vane. Probably next will get some melting snow making the rain collector indicate some rainfall.

My Davis Vantage Pro2 weather station is going to need a good spring cleaning, replacing the on-board battery, cleaning off the solar panel that helps with power, and cleaning out the rain collector.

So far, so good with my new weather station >dedicated< computer setup. The computer has been puttering away without issue. I do still need to hook up the UPS to keep both the computer and radio alive should the AC power get interrupted.

Let it snow!

It is snowing now – NWS says we’ll get 2 inches. I am hoping for more. I’ll have to do a bit of shoveling to clear the driveway in the morning, then I’ll head out with the 4 year old for some sledding. Should be a good time, although with the low temps (the high today was 10F) we will have to bundle up a bit. It has been so cold since New Year’s Eve that the wind direction sensor on my Davis Vantage Pro2 has frozen, pointing north.

I’ve been doing a little configuration work in the shack. I decided to dedicate one of my computers to running my weather station/APRS combo. Before I had the software (Weather Display and UI-View32) running on the same computer I used for my HF work. Things got busy with the log and Ham Radio Deluxe going plus the APRS and weather applications. Moving the weather and APRS applications onto its own computer should give me a bit more stability. I installed a dual boot configuration of Win XP and Ubuntu 9.10. I am initially sticking with Win XP as I know it works well with both Weather Display and UI-View32. My plan is then to migrate to Ubuntu 9.10 and run Xastir and the Linux version of Weather Display. I need to do some googeling and see who else is doing that and see what issues they ran into. I did find and interesting linux application called wview – will definitely explore that. Looks like it is also a replacement for Weather Display Live.

I have a new computer than I am going to dedicate to just HF operations – one of Dell’s new Zino computers. I like the small form factor and I will also install a dual boot configuration to have some fun with both Win XP and Ubuntu.

The old (circa 2005) desktop computer that used to run both the HF ham applications, Weather Display, and UI-View32 has now been moved to another table in the basement and has become the arcade machine. My cool xmas gift was the X-Arcade Tankstick – an amazing arcade controller that is built like an old school arcade console. Along with MAME software I have been able to play some wonderful, classic arcade games: Pac-Man, Galaga, Berzerk!, Robotron, Battlezone, and my favorite – Scramble. The Tankstick also has a trackball, so I have been able to relive the glory of both Missile Command and Centepede as well. I’ve had the four year old behind the joystick playing Frogger – and she did pretty darn good. It is hard to beat the classic arcade games.

The plan for my HF station, based around my Icom IC-7000 is to mount it in two iPortable boxes. The set up will include the IC-7000, a tuner, power supply, and the Dell Zino. If (…when…) I am deployed again, I will be able to have these two iPortable boxes sent out to me. I’ll take some pics as I put the iPortable station together and post it here.

Field Day

My Field Day adventure started on Tuesday, 23 June. I finished the final touched to the eARSIB and then through every possible item I thought I might need (minus a 25 pin to 9 pin cable for a Kantronics KPC-3+ which I will talk about later) in a total of 3 footlockers. I packed up the truck, loaded up the dog and was on the road by 10:30am. There was good APRS coverage on my route along I-80 up until western Nebraska where I encountered an almost 200 mile gap. Once I hit Cheyenne, I was back in APRS coverage. My stop for the first night was Laramie, Wyoming, which I made before sunset.

The next day I pushed on west. While in western Wyoming I was able to check into the 40M Sparkle Net (7262 kHz) and talk with Dave, KE0DL, back in Leavenworth, Kansas. I also noticed on my GPS that one of the APRS stations was moving along I-80 the same direction that I was going. I gave a short call on the 2M National Simplex frequency and got a reply. We had both started the drive in Wyoming but parted ways in Salt Lake; he headed south on I-15 to Vegas, I kept west on I-80. I enjoyed the drive through eastern Utah. Park City, Utah is a place I had spent a lot of time skiing about twenty years ago. I’d been there often in the winter, but this was the first time seeing it during the summer.

Traffic was heavy through Salt Lake City and I did my best to make my way around the city as quickly as possible. West of the Great Salt Lake, I had an interesting HF QSO with a gentleman in Southern California who was using an Elecraft K3 with an the diminutive MT-1 antenna. My initial plan was to spend the night in Winnemucca, Nevada but upon arriving discovered they had me on the second floor in a non-pet room. Instead of hauling my footlockers up a flight of stairs I decided to push on to Fernley, Nevada (just east of Reno) where I found a great hotel with a first floor room I could practically back my truck up into. The dog liked it too.

Thursday morning I worked my way up the eastern side of the Sierra Nevadas, listening to a few 40M nets. I reached the Sonora Pass around noon and enjoyed the view. The dog a I hiked up to a nearby plateau and took in the view.

After traveling down the western side of the mountains I was able to raise my dad, KD6EUG, on a repeater near his cabin in Mi-Wuk Village. California Hwy 108 wound its way down from Sonora Pass. The drive was spectacular along the scenic route and traffic was sparse. I rolled down the windows and opened the sun roof to take in gorgeous day. Reaching the cabin in Mi-Wuk, both the dog and I got to strech our legs and rest up. Thursday night we assembled the gear that would become a permanent station at the cabin: an IC-706MKIIG, LDG Z-11 Pro, RIGblaster PnP, IC-208H, all powered by an Icom PS-125. In addition to the radio gear, the station would also integrate a Davis Vantage Pro2 weather station, beaconing the weather data view APRS.

To simplify the APRS setup in the cabin, I decided to use a special add-on piece of equipment from Davis specifically designed to be used for APRS – the WeatherLink APRS streaming data logger. The data logger, once configured, streams weather data directly to a TNC, eliminating the need for a computer (or UI-View32). With this setup, it was not necessary to leave a computer running to keep the weather station pushing data to the TNC and VHF radio. The weather data is formated by the data logger to be ready for transmission into APRS. The station also has a laptop which I installed the WeatherLink software that would allow me to configure the APRS data logger. Configuring the data logger was pretty straight forward. Setting the parameters in the TNC to grab the data loggers APRS weather info proved a bit more challenging. The challenge was further compounded by my forgetting to pack the 25 pin to 9 pin cable that connects the laptop to the Kantronics KPC-3+ TNC.

The real work started Friday. The first task was completing the installation of a Davis Vantage Pro2 weather station on the cabin roof. That was done without much trouble.

The next step would be to get the weather data out via APRS using the IC-208H paired with the Kantronics KPC-3+ TNC and the Davis APRS streaming data logger. With the lack of a good cable to use between the laptop and TNC as well as not knowing exactly what parameters were need in the TNC we decided that task would have to wait until after Field Day.

Now it was time to string some antennas. The first was a 132′ dipole which ran N/S. I’d packed my CVS19 Pneumatic Antenna Launcher (aka tennis ball launcher) which helped us position the antenna up about 40′.

Next we strung a G5RV going E/W. This is the same G5RV I bought from a fellow ham when I lived back in Virginia. He had never used it and I had used the antenna only once while running a special event station at Fort Monroe.

It quickly became apparent that we could not both operate using both antennas due to their proximity to each other and surrounding powerlines prevented us from placing the antennas end to end in order to minimize interference. The solution: my dad’s Force 12 Sigma 5. The problem: the antenna was back in San Jose. So Friday night consisted of my dad traveling back to the Bay Area to retrieve the vertical antenna while I continued to configure the laptop (N3FJP Field Day networked logging software, Digipan for PSK-31, and the Davis Weatherlink program) in addition to setting up my operating position on the back deck of the cabin.

My operating position setup consisted of a 10’x10′ pop-up shelter (with mosquito net) and a large table with comfortable folding chair. Inside the shelter I placed a large table with the eARSIB and my station’s laptop.

I verified that the laptops at either operating position (the one inside the cabin and mine outside on the deck) could communicate via WiFi using the N3FJP software: it worked like a charm. The software allows two (or more) operating positions to share one log. Each operator gets to see the combined log and is notified of potential dupes.

Saturday morning my dad arrived back from the Bay Area and we setup the Sigma 5.

My operating position on the deck had the antenna connections for both the G5RV and the Sigma 5, my dad’s position had the 132′ ladderline-fed dipole. Interference between the two positions was sometimes a problem. I could use the Sigma 5 vertical on 20M, 15M, and 10M as long as my dad stayed on 80M or 40M (as long as I wasn’t on 15M). While this slowed down operations a bit, it gave us time to take plenty of breaks. My dad started Field Day by working PSK-31 on 20M. I worked phone contacts on 15M and 10M. Later my dad switched to phone, which he really started to enjoy.

10M and 15M were really incredible. I was able to work all the way to the East Coast and up and down the West Coast. For dinner, I BBQ’d some brauts. By midnight we were both exhausted and decided to get some rest.

I enjoyed using my eARSIB. This is the first time I used a foot pedal for my PTT – paired with a Heil headset. That worked great, allowing me to use both hands on the keyboard. I had been unable to configure the West Mountain RIGtalk to work on my laptop – not sure why. But it wasn’t too hard to just flip the band in the logging software. I had not used my Logikey CMOS4 Keyer in some time. I paired it with my Vibroplex paddle and the two worked well together. I enjoyed a few QRS CW QSOs – thank you for those who took the time to slow down for me. I had picked up a marine battery to use with my PWRgate and that worked well.

Sunday I got up after four hours of sleep and started working 80M using the G5RV.

The G5RV worked nicely and I contacted stations from Western Canada down to Southern California and Arizona. I moved up to 40M and expierenced similar results – but was also able to work a station in Japan. My dad was up soon and started to work on 80M and 40M with the 132′ dipole while I switched to the vertical and worked stations on 20M. By about 11:30am we were both pretty much spent. Overall we made about 250 contacts, mostly phone but also a few PSK-31 and CW…. and we had a great time!

KD6EUG Brags About The Number of QSOs He Made

We slept well Sunday night and Monday morning had me back working on the Kantronics KPC-3+/Davis weather station. The biggest problem I was having was figuring out what value to use for the GPSHEAD parameter. Without the correct value, the KPC-3+ was not grabbing the weather data. GPSHEAD would pull in the data a place it in LT (a buffer). LPT setup the APRS path. BLT setup the amount of time in between the TNC initiating a beacon transmission containing weather data.

After a few calls to the Davis headquarters, I was able to figure out that “@” was the magic value for GPSHEAD. Now the weather station is up and operational.

It was then back on the road, up and over the Sonora Pass. I was able to talk to my dad, operating from the Mi-Wuk cabin station, on 80M from the top of the pass. I spent the night in Carson City, Nevada and the next day headed east on I-80. I had made the decision to take I-70 back to Kansas in order to try something different as well as seeing a part of Colorado I had never seen before. It was a long haul to Grand Junction, Colorado – I arrived around midnight. After a few hours of sleep, I was on the road again heading east through some of the most beautiful scenery of the trip. Aspen and Veil were beautiful cities – I hope I get a chance to go back there someday. But while the drive was scenic, the going was slowed and progress was not nearly as quick as I had experienced before while moving through Wyoming and Nebraska.

I finally emerged from the Rockies and headed into Denver, stopping at the Ham Radio Outlet located there. Terry, KC0VFO, and I talked about our Field Day experiences – he operated mobile. His call sign looked familiar and sure enough, I had worked Terry on 15M during Field Day.

Moving east through Denver I was back on the open road, moving rapidly along I-70. I heard a call coming over the 2M National Simplex frequency. It was a gentleman operating from the Mt. Evans Observatory – we had an enjoyable QSO and he went on to work others. The Canada Day contest was also underway and I started to hand out contacts from the mobile. I had planned to make it all the way back to Leavenworth, Kansas but realized I was too tired and needed to spend the night somewhere. I crossed the Colorado/Kansas border and arrived in Goodland, Kansas were I found a hotel room and promptly fell fast asleep.

My final day on the road was pretty easy driving. When you think about Kansas, it is usually what you see in western Kansas along I-70. Flat terrain, lots of farms, not much else. For some reason, the speed limit max in Kansas drops to 70mph (Nebraska, Wyoming, Nevada, Utah, and Colorado all have a max of 75mph). I listened to some of the morning HF nets on 80M and 40M, then made contact with K2L, a special events station in Charleston, South Carolina. I was also able to check into the Sparkle Net on 40M and then later worked two stations on 17M, both located in and around the western border area between North and South Carolina. Soon I was back home, arriving before 3pm.

Rainy Sunday

It has been a cold, rainy Sunday. We are on short final for the delivery of child number two… about 12 more days. Spent part of the day finishing the fixes to the nursery. Despite the rain, I BBQ’d two excellent steaks for dinner. I spent a good amount of time at Fort Lewis, WA so BBQing in the rain is no big deal.

Yesterday I mounted a bike seat for my daughter (age 3) on the back of my underused Trek bicycle. The weather was pretty nice, sun and a little cool. I decided to take along my TH-D7A and mounted my Garmin eTrex on the handlebars… I was APRS bicycle mobile again (with a small passenger). I kept the power setting at EL (50mW) and had good luck getting digipeated by N7FTM, which is nearby. To get a little better coverage and maintain the low draw on the battery, I configured the home TM-D710A to digipeat only the packets from my TH-D7A. I hope the weather improves soon so I can do some more bicycle mobile testing. A speaker-mic would also be a great addition to the setup.

I have been doing a little more reading on APRS (when I should be working on homework). One item that I found very intriguing was CQSRVR. There is a good run down of that feature here and Bob “Mr. APRS” Bruninga’s, WB4APR, recent article in QST. What amazes me is that the CQSRVR feature is not used more often. I have also had a great time playing with I am a long time user of, but is just a wonderful tool to use in looking at APRS data.

It is time to get ready for Field Day. The plan is to road trip out California and link up with my dad, KD6EUG, at his cabin in Mi-Wuk (near Sonora, up in the Sierra Nevada Mountains. We will be a 2A operation. My rig will consist of my resurrected ARSIB (Amateur Radio Station In a Box). The ARSIB is based around the FT-817ND. To give the FT-817ND a boost, I’ve paired it with a 100W Tokyo HyPower amplifier. The tuner remains the LDG Z-11 PRO. I would like to have both a rig control interface and control cable from the radio to the amp but the the FT-817 has only one ACC input. Enter the CAT MATE – I am hoping this will solve the ACC input limitation. For a logging program I think we will go with the N3FJP logging software. It offers the ability to have two (or more) seperate stations have a combined log. It also features a software-based voice and CW keyer, which may come in handy. The downside is it is a Windows only program and it does not have integrated PSK-31. This will require a manual work around to add PSK-31 QSOs. I need to get all the pieces and parts together and start testing everything out to make sure there are no surprises. We will be busy enough stringing antennas and I want to minimize any adjustments I need to make to my own equipment during actual operation.

Send these commands to UI-VIEW as a message

I’ve been having fun using my TH-D7A with the UI-View32 setup at the home QTH. The commands below allow me to send a message from my TH-D7A back to my home rig and get a specified response:

?APRSP – sends back a location beacon.
?APRSS – sends back the status text.
?APRSO – sends back your active objects.
?APRSD – sends back a list of stations that have been heard direct.
?APRST (or ?PING?) – sends back the route by which the query was received.
?APRSH – sends back information on when was last heard.
?VER? (not an APRS query, but some APRS software supports it) – sends back information on the software version in use.

With “Remote commands” enabled in UI-VIEW, you can send the following commands that are specific to UI-VIEW

QAS – causes your system (the Ui-VIEW station) to Query All Stations.
QWS – causes your system (the Ui-VIEW station)to Query WX Stations.
BCN – causes your system (the Ui-VIEW station)to send a beacon.
LGS (or LG1) – enables logging at (the Ui-VIEW station),
using a log file named according to the date.
(This command must come from the station callsign.)
LGX (or LG0) – disables logging at (the Ui-VIEW station). (This
command must come from the station callsign.)
DX – causes your system (the Ui-VIEW station) to send an abbreviated best DX report.
!program – when sent to (the Ui-VIEW station) runs a program in the RCOMMAND directory