Posts Tagged ‘MFJ 1788’

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!

JT65HF up and going!

Screen shot of my first ever JT65HF contact!
I was shocked to see that my last blog post was almost a month ago! I have been on the radio on and off but the season has been very busy with work and then Christmas as well. I was doing some blog reading on the weekend and the Digi modes were being talked about again. In the past I have tried and tried but frustration settles in and I give up and move back to CW.  This time around I took more time and looked into the operation the JT65HF program. I do have wsjtx on my PC as well but it seemed to me that JT65HF was just a bit more basic for me and would at least get me going. The rig control I am using is DXlabs and as was said the digi software is JT65HF and Signalink usb sound card. I adjusted my output power on the K3 to 5 watts to see what would happen. I saw K0TPP calling CQ and I answered him and had my first JT65HF contact. I did not have anymore time for other contacts as other things had to be done around the house. BUT......this week I am hoping to some DX contacts.

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

Weather VS MFJ 1788 loop

Outcome of my damp MFJ 1788
The weather has been up and down up this way from snow and minus 2C then up to plus 14C it's the top end of the temp scale that I enjoy but that will soon come to an end as winter is on it's way! While on the subject of the warmer weather also comes showers and damp weather, for some reason this has an affect on my MFJ 1788 isoloop. In past I have found my antenna to be SWR sensitive to the damp and or humid weather. I had posted on some of the mag loop user groups to see if  others had the same issue. I was not able to get lots of responses but the consensus was that weather really had no effect on others loop! I ended up taking my loop apart and just checking out the insides and all looked good.
The work of the internal tuner
Once the damp and or humid weather changed all was well with the loop. The effect on the antenna is the SWR will not go below 2.7:1 on any given band but any other time the SWR would be either flat or close to it. I posted about this very problem this past summer on my blog and it really was not a humid summer so the problem did not arise that often. Now that it has happened again my own conclusion is the damp weather has an effect on the dielectric characteristics of the air that separates the capacitor plates in the antenna. This by no means is a scientific conclusion but as for simple old me it's the conclusion I am leaning toward. I do have an internal antenna tuner in the Elecraft K3 and my Elecraft KX3,
The SWR of the antenna
this allows me to lower the SWR so the rig does not see the high SWR.

Almost QRP/QRP contact

My drive to get our snows on....just in time!
Relaxing at the radio with some tea
Have to go into work on Sunday so I wanted to spend some relaxing time at the radio this afternoon and see what was up on the bands. I started out on 17m and it did have some DX on there but it faded very fast. I then received a call from our veterinary that our cats food was in for pickup so it was off to get that. When I returned it seemed that 17m things were just not happening. I jumped down to 20m and came across KB3RUN/QRP calling CQ I came back to him and he did hear me BUT this nasty QRN came over the radio and wiped out his signal all together. It seems to be a plasma TV that is in the area somewhere and by the time I filtered it out KB3RUN/QRP was gone. I did send an email just to let him know I did not forget about him. Most times on my contacts and almost contacts I send an email to thank the op for the contact.

Nice to get back in the radio chair agian.

Nice to get back on the air again
Just this morning I was looking over my last blog post and could not believe it was posted 3 weeks ago! I will say that things here at VE3WDM have been busy and it has not been with radio time. We had our Thanksgiving holiday last weekend and that weekend was packed with family things, shopping and making a turkey dinner. This year for the first time I tried cooking the turkey on the BBQ using the rotisserie, seems it turns out much better when the bird is done old style in the oven........live and learn. The other sliver of my time was taken up with work and once you factor in sleeping and eating not much time was left for radio. Last evening I pulled a 12 hour evening shift at work and arrived home this morning not feeling to bad so Julie and went out for a nice breakfast and then home to some well deserved radio time. The rig was tuned to 17m and I heard GI4DOH calling
GI4DOH
loud and clear  from Northern Ireland. I gave him some calls but was not heard but I did hang in there and finally my 5 watts made it to him. It was nice to get back on the radio as I find this to be a very relaxing time. I then jumped off 17m and over to 20m but there was a huge contest presence there (not that there is anything wrong with that I am a huge contest fan) so it was back up to 17m again. It seemed that for this afternoon Richard was going to be my only contact but it sure was nice to get back on the air again!

Making your radio time interesting is what counts!

I spent some time on 20m in the CW portion of the band and as always I wanted to make contacts with the lowest power possible. I came across 9A2G who was calling CQ and at the time he was not to busy with takers. This is a great opportunity for me to drop my call to someone who is listening. I started out at 500mW's and moved all the way up to 5 watts and nothing no contact. He did have some stations answer his CQ  and some where very weak so  he had good ears but not for VE3WDM. I then came across EG7MAL and I worked my way up to 5 watts and he came back to me with VE3?. He decided to move on as I was just not making the trip. At this point I was wondering how my low power signal was doing so I decided to call CQ at the QRP watering hole on 20m. I was checking with the Reverse Beacon Network to see how I was doing.  My 500mW signal was heard by AA4VV in North Carolina which was just over 1,000 miles per watt. I then bumped my power up to 1 watt and was very happy to see F4DXW was hearing me which meant my 1 watt of power made it 3461 miles. I did not make any contacts but I did find a way to make the radio evening a bit exciting even without making a two way contact.

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