AmateurRadio.com

Two more items for the Motorola GP300 arrived from Hong Kong today, an 1800mAH NiMH battery pack and a charger. I’m a bit dubious about the charger. I put the battery pack on the radio and started charging it, and when I checked six hours or so later the battery pack and radio were really hot. I would have thought the charger should have shut off by that point. So I’ll have to watch the charge times.

I wanted to have another try at programming the radio using a newer version of the software from the hampedia site but when I started up the Toshiba Satellite 1800 and tried to go into the Bios to re-enable the cache (which I disabled yesterday to slow the computer in the hope of overcoming the programming problem) it asked for a password. Somehow when I disabled the cache I must have accidentally enabled a Bios password, but of course as I didn’t do it intentionally I have no idea what the password is. I tried to start Windows 98SE but it took 20 minutes to load and was unusable once it eventually did. So that’s that.

But in the end another solution was found. I registered with the forum at the curiously named Batwing Laboratories website, which apparently is the fount of all knowledge for all things Motorola, and posted about my problem there. Tom in D.C. (W2NJS) replied that the DOS in Windows 98SE wouldn’t do, I must use MS-DOS 6.22.

Now I was programming micros since before IBM invented the PC. I’ve read Ray Duncan’s “Programming MS-DOS” from cover to cover several times so I was pretty much an expert on the subject at one time (though I’ve forgotten just about all of it now) and I would never have thought that there were any differences between the two versions affecting the use of the serial port. But Tom was firm enough in his advice that I downloaded an MS-DOS 6.22 boot CD image and made myself a boot disk. It wouldn’t recognize my Windows 98SE partition so I had to vape that, reformat under MS-DOS 6.22 and set everything up from scratch. Fortunately I still remembered enough about things like config.sys and autoexec.bat to get it to work.

I reinstalled the programming software, connected the interface, and this time I got “Radio Communication OK!” Tom in D.C. probably heard my cheers from there. So I was finally able to program eight 2m frequencies into the radio – five simplex channels plus the three local repeaters – and have just completed two QSOs on the GB3LA repeater from inside the house using a quarter wave telescopic whip, so it works!

The Motorola GP300 seems to work a bit differently to ham radios. For example, there are three power levels but the power level is fixed for each channel, so if I set High power in order to access a repeater from home I can’t reduce the power to Low to save batteries when I’m in line of sight of it from a hilltop. And if you want a Scan function you have to dedicate a channel to that.

Possibly there are some tips for setting up these radios for ham band use that I’m not aware of yet. But even if there aren’t, it’s still a nice radio for £1. Even if by the time you add in the cost of the programming interface, the battery pack, the charger and the adapter that converts the Motorola proprietary antenna socket into a BNC it ended up costing more like £40.

The renovation of the G4ILO shack is about half completed. The wood for the new shelf module needs another coat of paint, then it can be built and everything put back in again. Unfortunately old age is catching up with me and I am just sooooo tired and have so many aches and pains from all the work so far that progress is (literally) painfully slow. I missed the talk on SOTA at the radio club on Monday evening because I would probably have just fallen asleep!

After the flying hiatus some items I ordered from China and Hong Kong are starting to filter through including the programming interface for the Motorola GP300 radio. It is a Maxton RPC-M300, pictured on the right, and it came with a CD containing the necessary programming software. (The software can also be found on the hampedia website, so please don’t ask me for a copy.)

The software runs under real MS-DOS, not a DOS window. My researches had already established that it doesn’t run properly on newer, faster computers, so I installed it on the oldest PC I had available, a 2002 vintage Toshiba Satellite 1800, which happens to have both a floppy drive and a serial port. It doesn’t have network access, so getting anything on and off it is a bit of a headache, but I still have a copy of a Windows 98SE install CD and the required boot disk, so I was able to use that to provide the MS-DOS access.

No instructions came with the interface. It’s obvious that it clips on the back of the radio, and the red and black wires are used to provide power, but there is no indication of what voltage to use. Some DIY interfaces that have been published use a 9V battery so I set the variable power supply to 9V. The other two plugs – one like a telephone plug and the other a 3.5mm stereo jack – are presumably for other radios that the interface can be used with, so I left them dangling free.

I applied power and the red light on the interface came on. I then tested communication between the software and the radio, and the green light flashed for a few seconds, then I got an error #2 “No acknowledgement.” I tried again, this time after switching the radio on with the volume control, but then I got an error #7 “Invalid opcode.”

I had read that the programming software may not run properly on any Pentium computer at all, due to its use of timing loops. One of the suggestions to slow a faster computer down is to disable the CPU cache, so I went into the Bios and did this. This didn’t make any difference to my inability to program the radio, but it did make Windows 98 take 20 minutes to load and be unusable once it has done so. Unfortunately I discovered this morning that I had somehow managed to set a password on the Bios which of course I don’t know, so now I can’t get back in to the Bios to re-enable the cache. 🙁

It seems as if I will have to give up on the idea of programming this radio myself. My only hope now is that someone at my radio club is able to help with this. Unless anyone has any other suggestions?

Today’s bad news is that the toothache that I’d had for about a week hadn’t gone away this morning, and after my dentist took a look yesterday and tried one thing to fix it that didn’t work, this morning I made an appointment with an endodontist to see if I needed to have a root canal on that tooth. The folks in his office were nice and managed to get me a late-morning appointment, which meant that I’d work from home in the morning (the endodontist’s office is only about 10 minutes from home, so going all the way to work in Secaucus and coming back made no sense) then head to the appointment. (The other bad news is that I did indeed have the root canal procedure done. The procedure itself wasn’t so bad, but now that the anesthetic has worn off it’s pretty uncomfortable.)


As usual,  when I work from home I usually leave that packet cluster up and running, and this morning was no exception. I saw a spot for Charlie, VR2XMT in Hong Kong on 20m, which is another entity that I still needed to work. I’ve heard Charlie before and even tried working him but hadn’t had any success. While working on some emails for work on my laptop, I tuned to the spot frequency and heard Charlie’s very strong signal. I called him several times but wasn’t able to get through, so I turned down the volume a bit and kept listening while working. After a while it seemed that there weren’t as many callers, and in fact it got to the point where there seemed to be nobody calling at all, so I gave my callsign a few times in response to Charlie’s “CQ”, and he responded to “the station ending in Echo Bravo Kilo”. I figured that he might have been calling me so I called phonetically a few more times and sure enough, he was calling me. We exchanged 5×5 signal reports, I thanked him, and I had a new one in the log!


Unfortunately, Charlie doesn’t participate in Logbook of the World, but since this is an all-time new entity I would have been sending for a paper QSL card anyway, which I will get in the mail very soon. It’s always great to work a new DXCC entity, and it was especially great to have worked my 2nd new one this year within less than a week of working the previous one.

The season of Linux fests is now under way. The Texas Linux Fest took place a couple of weeks ago. By all accounts, the turnout was excellent, the educational opportunities were plentiful and fun was had by all.

Oggcamp in the UK is next on the list. Then there will be ham fests and Linux fests all over the country and the rest of the world for the rest of the spring, summer and early fall. Linux in the Ham Shack will be represented at the Dayton Hamvention in May and at the Southeast Linux Fest in June. I’m also trying to start a new Linux fest called the Mid-America Linux Fest which will be held in early November. It’s possible that could be November of 2010, but it’s more likely to be November 2011. If you want more information about the Mid-America Linux Fest or are willing to volunteer your time or services, please check out the Web site at http://midamericalinuxfest.org.

And yes, I know this episode of Linux in the Ham Shack is late. Life has been very busy of late and I think all of our listeners for your eternal patience. We hope to see you at the live recording of Episode #037 on April 27th at 8:00pm.

73

Atlantic Single Operator.

• NO3M | 53 Qs | 39 Mults | 2,067 Points [NCC].
• N4AF | 49 Qs | 35 Mults | 1,712 Points [PVRC].
• W4OC | 49 Qs | 34 Mults | 1,666 Points [SECC].

n = 10 scores submitted in this division.

East Central Single Operator.

• N4OGW | 53 Qs | 36 Mults | 1,908 Points [ACG].
• K9BGL | 51 Qs | 36 Mults | 1,836 Points [SMC].
• W9RE | 51 Qs | 35 Mults | 1,785 Points [SMC].

n = 16 scores submitted in this division.

West Central Single Operator.

• WD0T (@KD0S) | 52 Qs | 37 Mults | 1,924 Points.
• K0AD | 48 Qs | 35 Mults | 1,680 Points [MWA].
• N3BB | 48 Qs | 35 Mults | 1,680 Points [CTDXCC].

n = 10 scores submitted in this division.

West Single Operator.

• KQ7W | 49 Qs | 35 Mults | 1,715 Points [Kaunas Univ of Technology].
• K0UK | 37 Qs | 25 Mults | 925 Points [Grand Mesa].
• KI7Y | 21 Qs | 14 Mults | 294 Points [WVDXC].
• K7SS | 1 Q | 1 Mult | 1 Point [WWDXC].

n = 4 scores submitted in this division.

NCCC in CA/NV Single Operator.

• K6VVA | 56 Qs | 37 Mults | 2,072 Points.
• N6RO | 51 Qs | 36 Mults | 1,836 Points.
• N6ZFO | 48 Qs | 33 Mults | 1,584 Points.

n = 7 scores submitted in this division.

Three more Qs in the log is enough and congratulations Ric, K6VVA on a stunning victory for his remote station while propelling the North California Contest Club into this week’s banner position!

His commitment to the fastest 30 minutes in RadioSport paid significant dividends. I’d call this a 12th round, gone the distance competition between Ric, K6VVA affectionately known as “The Locust” and Eric, NO3M.

Contest on!

On the road again… happy feet dance! K4UPG is loaded and ready for a good day by the lake operating the QRP To The Field event for 2010.

K4UPG ready to roll to QRP TTF site

Loaded with ALL the options!

Then came the wind knots in the antenna launching rig! I wanted to get a doublet up as high as possible. Took nearly 2 hours to get my antennas up in the air. LESSON LEARNED: It is really helpful to have another person along to help untangle all the knots that wire and string seem to make all by themselves.  Getting  the antenna up quickly is a key to portable ops. Grrrrr!

One of several tangled messes that delayed the antenna deployment

LESSON TWO: After a delayed start, I spent a lot of time moving my portable table to keep out of the direct sun! With temperatures in the upper 80′s it was HOT and direct sun causes my Sierra to drift a bit which makes qso’s more difficult. Need to get a sun shade setup and not waste time moving my position.

The band conditions were pretty poor and I did not hear as many stations as I had hoped. The ones I did work were tough going and seemed like others could not hear me responding to their CQ’s.  I didn’t even hear a lot of Florida QSO party ops, but sounds like others that were farther away did. In 5 hrs I managed three whole qso’s with TTF stations. I did hear one Polar Bear– Martin operating as VA3OVQ but he could not hear me when I replied to his CQ.

Warning sign about 30 feet from my operating site!

It was fun to be outdoors and playing radio! I did not get eaten by our neighborhood gator either! Maybe next time out will be better contact-wise.

Series Three Episode Eight of the ICQ Amateur / Ham Radio Podcast. News Stories include:-

• Rescue at Sea
• Belgium to New Zealand with ROS
• The Secrets Of Radar 
• Ham foxhunting season begins 
• AO-51 CTCSS experiment
• Ham helps victims of heavy Brazilian rains
• 3400 MHz allocation for Estonia
• GB3VHF antenna rigging completed
• Solar powered D-STAR repeater
• MB7PI increase APRS coverage
• Iran’s rejects jamming claim
• Scotish repeater problems solved
• WIA Centenary Award 
• Changes to licence application procedures
• Entry level Amateur Radio licence for NZ?
• World DX Club introduces e-membership
• New test version of PC-ALE released
• Beta of SDR-RADIO

Your feedback, upcoming events and Martin (M1MRB) tells us about his day at the RSGB AGM.