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42-321 Questions
Paperboy
Junior Member
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Posts: 13
Threads: 4
Joined: Sep 2016
City: Zachary,la
#16

10-29-2016, 09:28 AM
(10-28-2016, 11:38 PM)Radioroslyn Wrote:  
(10-28-2016, 11:02 PM)Paperboy Wrote:  I ohm'd out the RF transformer (part #11).
The secondary gave 30 ohms but the primary
showed infinity. Is it easy to find this part or do I have to find another 42-321.
Thanks

I would wind 50 or 60 turns of sm magnet on the coil form like 36ga wire. It's untuned so it not super critical. Or you could use a rf choke in place of that winding and use a small mica cap like 50pf from the plate of the rf amp to the input grid of the mixer tube. Or this   https://www.tubesandmore.com/products/an...ube-radios

A new rf choke, would that be in series or parallel with new pico farad???
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Messages In This Thread
RE: 42-321 Questions - by klondike98 - 10-27-2016, 08:55 AM
RE: 42-321 Questions - by Paperboy - 10-27-2016, 03:31 PM
RE: 42-321 Questions - by morzh - 10-27-2016, 04:33 PM
RE: 42-321 Questions - by Radioroslyn - 10-27-2016, 04:35 PM
RE: 42-321 Questions - by morzh - 10-27-2016, 06:14 PM
RE: 42-321 Questions - by Paperboy - 10-28-2016, 10:19 AM
RE: 42-321 Questions - by Radioroslyn - 10-28-2016, 04:29 PM
RE: 42-321 Questions - by Paperboy - 10-28-2016, 11:02 PM
RE: 42-321 Questions - by Radioroslyn - 10-28-2016, 11:38 PM
RE: 42-321 Questions - by Paperboy - 10-29-2016, 09:28 AM
RE: 42-321 Questions - by Radioroslyn - 10-29-2016, 10:16 AM
RE: 42-321 Questions - by Paperboy - 11-04-2016, 11:39 AM
42-321 philco paper behind dial - by Paperboy - 10-27-2016, 08:38 AM



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