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

37-665 vs 37-660 Why ?
#1

I recently saw an ad for a 37-665, and began to research the radio. In looking through the wonderful resources on this site I found it is an amazingly nice design. I also am left a bit puzzled. The 37-660 seems to have a better band coverage for general shortwave listening, being continuous coverage from 2.3 MC to 18.2 MC, while the 37-665 goes much higher, up to 42 MC, but leaves a gap from 22 to 25 MC. What was the purpose of the gap from 22 to to 25 MC ? Were both this and the one from 1720 KC to 2.3 MC removed because they were "police bands" ? Also, and perhaps more important, what was the purpose of going so high in frequency with a home receiver? If any of our Philco gurus know, please let me know. I find it interesting. I would like to know the market they were trying to cater to.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
philco predicta
I found that where I have the 140v B+ there is 50v and the tuner receives 235v through the orange cablecgl18 — 04:14 PM
Philco 91 code 221
Chassis grounds thru rivets is another good place to look. Oh and the stator screws on the tuning cap where the leads at...Radioroslyn — 08:11 AM
Philco 91 code 221
Dirty tube pins and socket, cold solder joint, stray tiny strand of wire, clean the entire area around the oscillator tu...RodB — 08:43 PM
Philco 91 code 221
I have been restoring one of these sets and switched it on yesterday. It didn't exactly spring into life, but after a co...Philconut — 08:26 PM
Philco 50-925 antenna connections
That's super. Glad to hear you figured it out. Paul.Paul Philco322 — 11:11 AM
Philco 50-925 antenna connections
Hello Keith, great news !! Sincerely Richardradiorich — 02:14 AM
Philco 50-925 antenna connections
Finally, got the antenna fixed (repaired some broken wires) and have the radio playing. I've got four different schemat...keith49vj3 — 09:38 PM
1949 Motorola 5A9M
Bob, Nice radio.  I’ve not seen one before.  Keep us updated!Joe Rossi — 07:56 PM
Phioco 90 Power Transformer Wire Colors
Thanks for adding that information.klondike98 — 06:09 PM
Phioco 90 Power Transformer Wire Colors
Although I have used this site as a resource for a number of years this is my first post.   I am restoring a Model 90 si...vincer — 05:02 PM

[-]
Who's Online
There are currently 1471 online users. [Complete List]
» 1 Member(s) | 1470 Guest(s)
Avatar

>