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Model 70 air cap ground strap.
#6

        Here's another pic of the strap, see the lower connection to the cradle (I think - I ohmed it, would have to take it apart again to double check).

Also, I was getting intermittence on the field coil substitute  wire rounds I was using, a 2.7K and 3 100 ohms, so I found some old 1 (maybe 2)  watt Allen Bradley 1K carbons in my box and put these in. My plate voltages fell to 250 on the nose, it was at 269 - go figure. The carbons have drifted and the sum is approaching 3100 ohms. Don't know how long they will hold up. I can imagine what people thought when they paid 49.99 for this radio, equivalent to around 1,000 bucks today, and the radio went to the wild side at night. Well, throughout the last the last 20-25 years, we went through the same thing with computers (remember bad caps and such, software glitches - and those computers were not cheap at that point), history/technology repeats itself.


Messages In This Thread
Model 70 air cap ground strap. - by radio1 - 06-10-2020, 07:43 PM
RE: Model 70 air cap ground strap. - by rfeenstra - 06-11-2020, 07:38 AM
RE: Model 70 air cap ground strap. - by radio1 - 06-11-2020, 08:39 AM
RE: Model 70 air cap ground strap. - by radio1 - 06-12-2020, 04:17 PM
RE: Model 70 air cap ground strap. - by radio1 - 06-12-2020, 06:01 PM
RE: Model 70 air cap ground strap. - by rfeenstra - 06-12-2020, 10:20 PM
RE: Model 70 air cap ground strap. - by radio1 - 06-13-2020, 06:39 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-02-2020, 07:21 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-03-2020, 05:25 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-03-2020, 05:42 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-03-2020, 08:19 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-04-2020, 06:11 AM
RE: Model 70 air cap ground strap. - by rfeenstra - 07-04-2020, 08:06 AM
RE: Model 70 air cap ground strap. - by radio1 - 08-13-2020, 05:13 PM



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