Hallicrafters S-72

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Hallicrafters S-72

BrendaAnnD
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Posts: 1,108
Threads: 89
Joined: Jun 2011
City: Tacoma State, Province, Country: Washington

#14

09-27-2013, 03:43 PM

The BFO is a completely isolated circuit on this set. The only coupling is via stray inductance into the 2nd IF. I'm perplexed that it ever did it's job at all.. Icon_smile

At any rate, nothing I removed is anywhere near that circuit, which is literally an island unto itself, with the only connections to the rest of the radio being the filament and B+ connections.

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Messages In This Thread

Hallicrafters S-72 - by BrendaAnnD - 09-25-2013, 09:36 AM

RE: Hallicrafters S-72 - by morzh - 09-25-2013, 11:10 AM

RE: Hallicrafters S-72 - by Radioroslyn - 09-25-2013, 06:13 PM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-25-2013, 08:33 PM

RE: Hallicrafters S-72 - by Arran - 09-25-2013, 10:14 PM

RE: Hallicrafters S-72 - by marty - 09-25-2013, 10:35 PM

RE: Hallicrafters S-72 - by Arran - 09-25-2013, 10:36 PM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-26-2013, 12:48 PM

RE: Hallicrafters S-72 - by Mondial - 09-26-2013, 02:19 PM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-26-2013, 06:03 PM

RE: Hallicrafters S-72 - by marty - 09-26-2013, 06:28 PM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-27-2013, 09:05 AM

RE: Hallicrafters S-72 - by marty - 09-27-2013, 10:28 AM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-27-2013, 03:43 PM

RE: Hallicrafters S-72 - by marty - 09-27-2013, 04:07 PM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-27-2013, 07:55 PM

RE: Hallicrafters S-72 - by BrendaAnnD - 09-27-2013, 08:00 PM

RE: Hallicrafters S-72 - by Arran - 09-27-2013, 10:07 PM

RE: Hallicrafters S-72 - by Mondial - 09-27-2013, 10:40 PM

RE: Hallicrafters S-72 - by marty - 09-28-2013, 12:16 AM

RE: Hallicrafters S-72 - by marty - 09-28-2013, 12:24 AM

RE: Hallicrafters S-72 - by Radioroslyn - 05-14-2018, 11:51 AM

RE: Hallicrafters S-72 - by jcassity - 05-15-2018, 08:43 AM

RE: Hallicrafters S-72 - by Radioroslyn - 05-18-2018, 03:50 PM

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