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

Modified 54C - Oscillator Issue
#10

Well...

This morning, I printed a 54 dial graphic to size and taped it to the chassis. I found that the alignment - on the high end at least - actually wasn't too far off. At the low end, 600 kc was coming in around 70 on the dial. Fortunately, the 54 has a low frequency padder so this error was soon taken care of.

Now the set has been nicely aligned and is working properly. Yes, it is less sensitive on the low end of the dial, but it seems most of these cheaper radios are anyway. This isn't a laboratory grade instrument - it's a five tube cigar box pee-wee which was originally made to sell at a fairly low price.

I am very happy with how it has turned out. I would absolutely do this conversion again on a 54 if only to get rid of those two large power-wasting resistors on top of the chassis.

Thanks for the responses.

   

(Notice the Steve Davis alignment tool in the photo above.) Icon_thumbup

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Modified 54C - Oscillator Issue - by Ron Ramirez - 11-20-2021, 10:59 PM
RE: Modified 54C - Oscillator Issue - by OZ4 - 11-21-2021, 12:12 PM
RE: Modified 54C - Oscillator Issue - by OZ4 - 11-21-2021, 12:26 PM
RE: Modified 54C - Oscillator Issue - by MrFixr55 - 11-21-2021, 04:12 PM
RE: Modified 54C - Oscillator Issue - by morzh - 11-21-2021, 05:10 PM
RE: Modified 54C - Oscillator Issue - by Ron Ramirez - 11-22-2021, 11:41 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Cannot Adjust an IF Transformer’s cores
Outstanding work indeed. I wish I could come up with solutions like this.slford310 — 11:16 PM
Cannot Adjust an IF Transformer’s cores
The abilities of our 'Phorum Pholks" never ceases to amaze me! Fantastic fabrication, Joseph! I'm waiting now for...GarySP — 08:27 PM
PT-6 antenna connections
Thanks. I never realized that was a notch noted in the schematic as described. I’ll recheck my wiring.bridkarl — 08:13 PM
Cannot Adjust an IF Transformer’s cores
Thank you! I was quite new to the Phorum when I started this post, so I feel like it might be advantageous to publish a ...jrblasde — 08:07 PM
PT-6 antenna connections
Notice in the schematic the notch at the bottom of the antenna coil is between pins 3 & 4. Yes, pin 6 of the 7C6 is...RodB — 07:34 PM
bridkarl
I have two PT-6 chassis. On both there is a blue wire that runs from the above chassis transformer to pin 6 of 7C6. So t...bridkarl — 07:23 PM
Cannot Adjust an IF Transformer’s cores
Joseph, now you are an engineer!!RodB — 06:37 PM
PT-6 antenna connections
Hi, reading your explanation I can see the confusion. If you take it one connection at a time it should result in a desi...RodB — 06:34 PM
Cannot Adjust an IF Transformer’s cores
It works! I received the PCBs this morning in the mail, and put everything together. I reused the base from the original...jrblasde — 04:32 PM
PT-6 antenna connections
I seem to have lost my way on this PT-6. I see the antenna aerial transformer schematic - I’m reading pins 1 through ...bridkarl — 12:30 PM

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

>