Archive for the ‘qrp’ Category

It’s a cold one out there!

Steam coming off the water down at the lake
The little motor in the antenna
Today is supposed to be one of the coldest days this winter and up to this point we have had some very cold days! This morning I went out to get our food shopping done and going from the car to the market it was so cold it took your breath away. We live in a condo and in the underground garage the temp was -7C, most of the time it's well above 0C but not today. The temp this morning without the windchill was -22C and the weather is forecasting later later today with the windchill it  will drop to around -40C!! Today is a good time to stay indoors and play radio. The MFJ 1788 seems to have no problem in this cold weather. As a matter of fact the colder the weather be better the SWR, the little motor that operates the large capacitor has no problems in this weather. This afternoon I'm hanging out on 20m at the QRP watering hole of 14.060 calling CQ and listening. I was calling on 15m and it really did not seem like the band was open I then moved up to 20m. Since I was calling CQ I checked the Reverse Beacon Network and noticed that on 15m I was spotted by F5MUX from France. This is the first spot EVER for me from my new location being spotted  outside of the U.S. Well it's getting late in the afternoon and I was skunked on the bands today…..oh well maybe later this evening!

Middle East QRP contact

Back in 2012 I made my first and only to date contact into the Middle East using QRP power of 5 watts. The band conditions were good and 4Z5MU had not been spotted yet, this is also a great advantage to a QRP signal. Once the spot goes out the band gets crowded and the amps start warm up the QRP signal cools down. The other week his QSL card arrived and reminded me about the contact. As often happens when I hear a call and at the same time writing it down the rabbit ears go up when the result at the end of my pencil is a sweet DX call. One the first things that goes through my mind is "did I copy the call correct?" Once I realize it was copied correctly the next question is "where is the pileup" Now the game in my head begins……I now know this is a very sweet opportunity but I want to make sure they are not operating split and end up calling where I should not be! As I do this in the back of my mind there is a little voice saying "hurry up fool before the pileup starts and you loose the opportunity" This time the questions were answered and the opportunity of 4Z5MU made it into the log book and now a QSL card to boot.

Low cost kits

See http://www.aliexpress.com/store/331885 .   This website has some very low cost rigs for sale. An example is a 40m Pixie at around $10 post free. You’d be hard pressed to buy the individual parts for less!

UPDATE 1430z:   I have just ordered a 40m Pixie kit from them.  Should be here in 2 to 3 weeks time. I hope I can manage to build it with my clumsy soldering currently.

UPDATE 2000z: G1KQH has found the same Pixie at an even better price:

Greetings Roger
 
I could of saved you a fiver out of your pension but you had to rush in:
 

73 Steve
http://www.g1kqh.talktalk.net/

Holiday SOTA Activations

So here we are, another year has past, and it seems, at warp speed. I hope each of you are enjoying the holiday season, however you celebrate it. Our family celebrates Christmas and I was able to spoil my grandchildren, so it has been fun indeed. Happy New Year as we approach 2015, and may you have health and happiness.

I am spending a few days at my Santa Fe, NM QTH for the holidays. There is snow on the ground and its only been above freezing about 3 hours since last Friday. However its a dry cold so its not too bad.

As always when I'm here I try to squeeze in some Summits on the Air (SOTA) activations. So far I've been able to do a couple as detailed below.

The Wagon Mound W5N/EL-016  6,930ft ASL  6 pts

The Wagon Mound gets its name from it's appearance. Without too much imagination you can see the outline of an old Conestoga Wagon on the summit outline. I chose this summit primarily because I've never done it, but also because, for the peaks in the area, it is at a relatively low elevation and the snow cover should be much less than higher peaks. When I departed Santa Fe, it was clear, sunny and 19F. I envisioned very thin snow cover, if any, on the mountain.

I was in for a little surprise, as you will see from the video below.


Wagon Mound, NM is 104 miles northeast of my QTH near Lamy, NM. About half way there we encountered fog. Visibility dropped, at times, to about 50 yards and the temperature dropped to 7F. I was beginning to have my doubts about making the climb. It was obvious that the snow accumulations were significantly more here, than back home. However I continued, postponing my decision until I could see the actual conditions at the base of the mountain..

Upon arrival, conditions had improved a little, visibility to 1 mile and the temperature was 13F at the base of the mountain. It wasn't a long climb, but it was steep. There was about 12 inches of snow on the ground. The problem with that is that this climb was a bushwhack over volcanic rocks and cactus. The snow cover completely disguised what might or might not be underneath. I decided to make the attempt. Cris, my XYL, was with me and she was willing to try as well. After all, we had just come over 100 miles.

The footing was treacherous. I had to plant my foot through the snow to discover what footing was below, whether solid ground or slippery rocks.We took our time and turned what should have been a 20 minute climb into about 40 minutes.

We set up about 30 feet below the summit, well into the activation zone. I used my KX3, 31 ft. piece of wire elevated with a 21 foot mast through a 9 to 1 balun, tuned by the KX3's tuner. Despite weather conditions, propagation was very good. I worked 31 stations on 20m CW in 18 minutes, a quick QSY to 40m yielded no results and since it was cold I didn't try any other bands. We packed up and retraced our steps down.

All in all a very satisfying activation given the challenges. We stopped on our way home in Las Vegas, NM and warmed ourselves up with some Mexican Food. A good day.

Summit 6860 W5N/SI-022  6,860ft ASL  6 pts

After my experience heading north, I decided to go south for my next activation. This summit is east of Albuquerque NM just south of I-40 and 67 miles from my QTH. This is a nice summit. Depending on where you start, the hike is 2. to 3 miles round trip. The elevation change is about 800 feet over that distance. There are numerous crisscrossing trails over the terrain, so there are multiple ways to get to summit. The trails are all nice trails, no bushwhacking required on this one.

The weather was near perfect for climbing, about 40 degrees, sunshine and little wind. Very enjoyable. You will see from the video below that the conditions were splendid and there was a little snow on the ground.



I used the same set-up here as described above. Conditions were good, 31 QSO's on 15, 20, and 30 meters.

So 12 more points in the log and some good exercise and, obviously, some stories to tell.

Happy New Year!!





Hendricks QRP Kits BitX20A

image

See http://www.qrpkits.com/bitx20a.html

If I was looking for a simple, reliable QRP SSB rig for HF use in the coming years then the Hendricks QRP Kits version of Ashlan Farhan’s BitX transceiver for 20m would be in the frame. They also do a version for 17m, but there is more chance of QSOs on 20m.  The rig has a useful 5W pep output and looks straightforward to build for most people. The Ashlan Farhan design is well proven. Going from 100W down to 5W is only just over a couple of S-points. 5W will get you plenty of QSOs on 20m SSB. 5W is fun.

A 10m version would be fun, but sadly is not available, but likely to be less useful in the years to come, apart from summertime Es. A 10m design would need better MOSFET PA devices anyway I think.

Armchair ham radio at it’s best!

The armchair setup
There have been evenings when Im relaxing and icing on the cake to the evening would be the added flavour of ham radio. Having said that I do have a "shack" in the condo but there are times when you are in the Lazy boy chair and sitting in the cold hard wooden chair at the radio desk just does not turn my crank! While relaxing in the chair and thinking of radio I came up with a nice solution to bringing ham radio to the Lazy boy chair. On a side table I am able to comfortably place my Elecraft KX3 and the MFJ 1788 control head. I ran a shorter piece of RG8X coax from the MFJ 1788 loop to it's control box. From the control box to the KX3 the RG8X is rather bulky so I used a piece of RG58U coax that came with BNC connectors on each end. The MFJ control box require a voltage source from 9 to 16 volts to work. To make things more simple I used a 13 volt DC power pack that I can recharge. The KX3 is powered by my Astron power supply back at the radio desk, in the condo that is not to far
A closer look 
away. The key Im using is my Palm radio mini Paddle since the KX3 is on a side table to my left using the KX3 paddle would be awkward. The Palm paddle can nicely sit in front of me and I have a 3 ring binder with a metal plate on it the palm paddles magnets hold it secure. I brought along my iPad mini as I can look calls up on QRZ.COM and am looking into a logging program for it, one that I can upload to LOTW and club log.  During my short operation on Saturday evening I was able to contact VE1BA in Nova Scotia my RST was 589 with some QSB and our QSO was a KX3 x KX3 and QRP x QRP contact. It was a nice QSO as we chatted about the weather, antennas and rigs. On Sunday I was almost able to complete a contact with W9MIC as the conditions on 20m were not all that great. I really can't log W9MIC as the contact really was not completed as we both faded into the noise floor. Another benefit of this setup is I have the opportunity to use my KX3 and become more familiar with it. There have been times when I have been using my KX3 out in the park and forgot how to do certain functions……maybe those moments will be far and few between.
The op desk with Palm paddle

MST SSB transceiver kits

See http://www.ozqrp.com/index.html

https://pbs.twimg.com/media/B2o8mpYIgAAX6Pc.png:large

A nice line of SSB QRP transceivers for 80, 40 or 20m with power up to 5W.  These kits come from Australia and payment is by PayPal. I have no experience of these kits so have no idea how they perform when bands are busy as in Europe.

It looks like these are easy to build kits.


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  • Matt W1MST, Managing Editor