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

my 37-630 restoration
#6

I finished the actual chassis work on this radio early in the summer, but them took a break from it. All that was left was re-installing the tubes and alignment. I picked it up again about three weeks ago. Then I discovered that my frequency counter and my signal generator, both modern, made in China, were not working! Something must have happened to them in the move from RI to TN. I looked on sBay and found an old Heathkit signal generator, and ordered it. I am using a really nice digital readout shortwave radio to check its frequency output against. When it arrived, the very first thing I did was replace the power supply filter caps. It works very well, and its output is right on with the dial scale. I use the modern radio to make sure I am right on frequency. To set the IF, 470 KC, I tuned the radio to 940KC on the AM band, and then set the output of the signal generator to give me the maximum output there, I used the harmonic of the 470 output to double check it, in other words. After that, I could use the actual frequencies to check the output was right on. I have finally gotten the radio all working. The shadow meter does not deflect much though. I have tried everything. I used the shadow meter setup described on this site. I get deflection of the vane inside, it's not stuck. I can see the shadow move a lot when the set goes from off and warms up, but it only moves a tiny bit when tuning. The resistance on it is about 1500 ohms. I'm not going to worry much about it though, since other than that the set is working pretty well.


Messages In This Thread
RE: my 37-630 restoration - by klondike98 - 06-03-2018, 04:25 PM
RE: my 37-630 restoration - by mikethedruid - 06-12-2018, 10:31 AM
RE: my 37-630 restoration - by mikethedruid - 09-22-2018, 08:07 PM
my 37-630 restoration - by mikethedruid - 06-03-2018, 11:47 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Need to purchase some accessories for restoration of my Old Philco Radio
Hi Paulo, Welcome to the Philco Phorum. I can see why you want to find good reproduction parts. That is a bea...MrFixr55 — 11:10 PM
HiFi (Chifi) tube amp build - but my own design.
Tim, I have some bakelite sockets in my work shop that I can dig up. I believe quite a few are NOS. I will take photo...RodB — 10:03 PM
Philco 610B oscillator wiring
> The cathode as noted is wired directly to the ground side of the heater filament for that tube, not to the #17 and ...Radioroslyn — 08:12 PM
HiFi (Chifi) tube amp build - but my own design.
Tim; I noticed your post a little late, but I would take one of the junk sockets and try to break a chunk out of it wi...Arran — 08:07 PM
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM

[-]
Who's Online
There are currently 1472 online users. [Complete List]
» 2 Member(s) | 1470 Guest(s)
AvatarAvatar

>