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

Philco Model 37-61 Short Wave Reception
#1

I just successfully completed the electronic refurb of a model 37-61. This is an AM/SW receiver with a 20' wire connected to terminal 1 and another 20' wire connected to terminal 2. The ground link on terminal 3 is not connected to terminal 2 or 4. During the alignment using a signal generator, the signal strength/output was almost the same for both bands. But, the actual signal reception is quite different. The AM stations in the Los Angeles area are received with plenty of gain/volume. The AM section performs very well. The short wave section appears to be performing properly too based upon the signal generator readings but does a very poor job of picking up signals on the SW band which is 5.7 to 18.2 Mhz. At full volume I can tune the entire SW dial and pick up dozens of very weak carriers but too weak to be useable. Night time reception was the same. Question: Is this the best performance for this model or is there a problem that I have yet to uncover? Looking forward to your suggestions. Thanks.
#2

This model is not a DX type sw receiver, so it will need a good ground and at least 20-30 foot long wire antenna (preferably outdoors and high up as possible) for reasonable reception on SW. Also, back then SW stations were booming out with higher power and targeting the US more frequently. Also SW reception generaly right now ise not the greatest anyway. A ground and an antenna with as much wire as you can string up will help the best.

Chuck
#3

Thank you for your advice. The one thing I have not done is ground the radio. I will try that to see if I get any improvement.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM

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

>