Friday, March 29, 2019

CW on 3565 KHz

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Push-pull Colpitts power oscillator on 3565KHz with 6 watts into a low endfed wire as copied by VE7SL in British Columbia, 1490 miles to...
Monday, March 25, 2019

It's on the air!

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It is on the air! This evening I had a great 80 mtr QSO with my friend Lou, VE3AWA, in Ontario, 570 miles as the crow flies. He reported a...
2 comments:
Friday, March 22, 2019

Music to my ears

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It works! Last night I completed the under-the-chassis wiring of my Push Pull Colpitts transmitter. I ended up doing "bus bar...
1 comment:
Sunday, February 24, 2019

Push-Pull Colpitts Transmitter - 4

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In between shoveling snow and chipping ice here in Minnesota (a common winter pastime and good way to catch up with the neighbors) I...
Saturday, January 26, 2019

Push-Pull Colpitts Transmitter - 3

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I'm making good progress on my new transmitter.  With a lot of help from my friend KE0EXE and his table saw I now have a nice looking oa...
Monday, January 14, 2019

Push-Pull Colpitts Transmitter - 2

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I think I have enough to get started.... The tough part to find was the dual 500 pf Cardwell capacitor. I found one by putting my need o...
Sunday, January 13, 2019

Push-Pull Colpitts Transmitter - 1

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I’ve started on a new transmitter for the next AWA Bruce Kelley 1929 QSO Party. The “BK” requires non-crystal-controlled transmitte...
Monday, December 31, 2018

Handbooks on the web

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Several ARRL (and Radio) Handbooks can be downloaded from the web ... 1976:  https://ia800401.us.archive.org/27/items/RadioAmateurHandbook...
Monday, December 10, 2018

Further 6J5/6L6 Transmitter Developments

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My shack continues to be in a state of flux, Nothing is built just once. As I rethink things, stuff is added or changed. In this case I de...
3 comments:
Sunday, December 9, 2018

Novice Bookends

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Many identify the Novice Class between 1951 (when it was introduced) and the early 70s (when VFOs, 250 watts and renewable licenses became p...