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Bauer 707 Repairs




 
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January 28, 2022, 08:44:27 PM *
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Author Topic: Bauer 707 Repairs  (Read 282 times)
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ka4koe
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It's alive. IT'S ALIVE!!!


« on: January 10, 2022, 08:26:37 AM »

Working again on my Bauer 707 which was a gift from Liz K4GHT (now SK) back in 2017. The transmitter was successfully converted to 75m and in use when it had a major failure early 2018. I was then diagnosed with cancer and was distracted for a few years. Back on repairs and hopefully will have it back on the air for the AM Rally in February.

See video at

https://youtu.be/iDE8Ud-DEZE

I am eventually going to a grid drive arrangement as the current configuration that modified the driver tube to a TGTP configuration borderline works; the design was taken from ER Magazine. Not stable (TGTP is usually associated with oscillators) and will spew out garbage up and down the band if it is not tuned just right.

Fleep
KA4KOE

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I'm outta control, plain and simple. Now I have a broadcast transmitter.
kc4mne
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« Reply #1 on: January 14, 2022, 07:59:17 AM »

I have one in S FL. Have not fired it up in a while. Know what you mean about barely working and garbage up and down the band. Mine has that behavior as well.
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ka4koe
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It's alive. IT'S ALIVE!!!


« Reply #2 on: January 14, 2022, 08:06:37 AM »

One should not go straight from repairing Valiants to broadcast transmitters like I did. But, I'm fully vested and going to see this project thru.
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I'm outta control, plain and simple. Now I have a broadcast transmitter.
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