Strong signals are few and far between here at the Shady Creek Resort but I'm still been able to make contacts using my K1 running five watts into my Crappie Pole C-Pole antenna.My surprise contact yesterday was EA6UN on the Balearic Islands off the coast of Spain in the western Mediterranean Sea. That's over 4600 miles on my five watts. I found Jurek calling CQ on 14.050 MHz with no responses. He came right back to me and gave...
Sunday, June 24, 2012
Friday, June 22, 2012
W0VLZ Operating
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qrpxpedition
I have almost a week to kick back at a lake resort here in north central Minnesota. As usual I have my K1 along. In the past I would have made use of a tree as an antenna support for my end fed 67' wire antenna. This time I'm using my Crappie Pole C-Pole antenna.Conditions have been marginal at best with strong signals few and far between...
Thursday, June 14, 2012
MOBO V4.3.4 SR V6.3 (Original) preparation
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MoBo
I just build a new SR V6.3 from scratch and added the headers for RX and TX IQ and beefed up the power.I didn't have a 1N5422 but I have a 1N5408 instead and after a quick test then extended the diode PCB pads a little so not as 'tidy' as the little DO41 drop in replacement.I did a scratch rebuild as the previous build had a LDVS version...
Wednesday, June 13, 2012
MOBO V4.3.4 POWER SWR Head
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MoBo
Images of the build.I used a length of RG58 as the single turns through the binocular core.I will also homebrew one of these using 1N5711 and discrete componen...
MOBO V4.3.4 Mini Filter A Set
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MoBo
PCB made up and installed.Quick test on a VNA shows the filters frequencies are about rig...
MOBO V4.3.4 PA
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MoBo
Mounting that heatsink.I did this:MOSFET attaches to REAR.I used a needle file and removed the anodising on the bottom ends of the heatsink and around the TO220 middle mounting hole.To attach th heatsink to the PCB I used two self threading M3 (ish) screws that bit into the heatsinks and created a good contact (I checked resistance was <0.1ohms)....
Tuesday, June 12, 2012
MOBO V4.3.4 Build for SDR-Radio Support
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MoBo
Asked where I am with this so here are the latest images.About to add the PA.Then will build the Mini Filters (Set A).I have a Blue and White 4x20 LCD and a 36 pulse rotary controller. I have a 128 coming from US but not here yet.Once all together will test and align... then it will be ready for Sim...
6N7 Tube QRP Power Amplifier - One Rainy Day DIY Project
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amateur radio >>
breadboard projects >>
DIY Projects >>
DIY Radio >>
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QRP operation >>
vacuum tube amplifier >>
Valves
Once upon a time I'd decided to join a Big Guns Gang and made a Super-Duper Powerful Vacuum Tube QRP amplifier for my 800mW QRPP homebrew telegraph vacuum tube transceiver "3T" (I promise to write a separate article or two about this three tube transceiver project later). It was not an easy decision to me because for that legendary time I'd...
Monday, June 11, 2012
Summer 2010 Trip
I'll keep this separate from the main home brew blog.http://m1ktarheinradweg2010.blogspot.c...
Sunday, June 10, 2012
The Mitey Mite Beginner Transceiver
Last weekend I attended the TwinsLAN/3M swapmeet in St Paul, MN. This is always one of my favorite swapmeets of the year. It is open-air in a large parking lot so all of the boatanchors show up that we don't want to lug inside to a table...just throw open the van doors or uncover the pickup bed and sell.This year I saw many more boat Nationals,...
Saturday, June 9, 2012
Tuesday, June 5, 2012
Monday, June 4, 2012
IF/AF Strip
I have been building a few things lately all using a 612/xtal/612/lm386 IF/AF strip so I made a PCB layout for it as I ran out of manhatten pads and the expresspcb software was easy to use. I just reworked it and this was done using Wine under Mint Linux (see W8DIZ latest series of QQ articles). If you really need it ask and I can send you...
Saturday, June 2, 2012
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