Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

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, 08:43 PM
RE: Model 70 air cap ground strap. - by rfeenstra - 06-11-2020, 08:38 AM
RE: Model 70 air cap ground strap. - by radio1 - 06-11-2020, 09:39 AM
RE: Model 70 air cap ground strap. - by radio1 - 06-12-2020, 05:17 PM
RE: Model 70 air cap ground strap. - by radio1 - 06-12-2020, 07:01 PM
RE: Model 70 air cap ground strap. - by rfeenstra - 06-12-2020, 11:20 PM
RE: Model 70 air cap ground strap. - by radio1 - 06-13-2020, 07:39 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-02-2020, 08:21 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-03-2020, 06:25 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-03-2020, 06:42 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-03-2020, 09:19 PM
RE: Model 70 air cap ground strap. - by radio1 - 07-04-2020, 07:11 AM
RE: Model 70 air cap ground strap. - by rfeenstra - 07-04-2020, 09:06 AM
RE: Model 70 air cap ground strap. - by radio1 - 08-13-2020, 06:13 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Another amp build - here I go again!
Sweet! I actually have a Dyba Mark 4 that I had been running with 6L6s with no mods. seemed to my 14-year-old head a...MrFixr55 — 12:57 AM
PT-6 finished!!
Hi Gang, Tube heaters are not "Ohmic" devices (that maintain specified resistance over wide temperature, c...MrFixr55 — 12:03 AM
Electrolytic restuffing/internals
Look here: Philco-F676-124 Vlad95 — 08:02 PM
PT-6 finished!!
Well the 35Z3 doesn't have a tap on the tube heater for a pilot light, so in this set they have the dial lamp paralleled...Arran — 06:21 PM
Electrolytic restuffing/internals
Thanks. I think I try to cut this as suggested. I don’t have a lathe, but I do have a tap and die set. I am going to see...bridkarl — 04:46 PM
Another amp build - here I go again!
Hey all! Well, I guess that with what I learned from my last build, it's time to move up the ladder another rung and tak...TV MAN — 04:38 PM
Electrolytic restuffing/internals
There are various ways to handle this, one is to cut near just above that rolled in area is near the bottom, using the r...Arran — 04:36 PM
philco predicta
If you have a television signal generator (a must-have for TV repair) and an oscilloscope (the same), then this problem ...RadioSvit — 04:23 PM
HiFi (Chifi) tube amp build - but my own design.
Thanks Rod for the offer but I don't think those would work. There's some differences in the sizing and mounting holes b...TV MAN — 03:13 PM
philco predicta
Bob Anderson (Bandersontv) on Youtube would be the go-to guy on these. Lots of good videos. I don't know what model you ...TV MAN — 03:02 PM

[-]
Who's Online
There are currently no members online.

>