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

37-60 alignment problem
#7

Dick
It's just a pickup loop (coil of wire) place around the mixer tube to sample the osc signal. If you subtract the IF frequency from the osc reading that will give you the receiver dial reading.
Maybe a little low grade loc-tite might stiffen the screws up a little or some non hardening gasket glue.

Mike
I think the reason for using harmonics was in the 30's generators were not all that accurate so by using a crystal osc and harmonic a more accurate adjustment could be made. Not sure why it would be done on the bc  band but on the sw bands it makes good sense. THe 16B uses something like a 3.7mc xtal to adj all of the sw bands.

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry


Messages In This Thread
37-60 alignment problem - by madsowry - 02-15-2021, 02:40 PM
RE: 37-60 alignment problem - by Phlogiston - 02-15-2021, 02:48 PM
RE: 37-60 alignment problem - by madsowry - 02-15-2021, 02:54 PM
RE: 37-60 alignment problem - by Radioroslyn - 02-15-2021, 07:06 PM
RE: 37-60 alignment problem - by madsowry - 02-15-2021, 08:11 PM
RE: 37-60 alignment problem - by morzh - 02-15-2021, 10:56 PM
RE: 37-60 alignment problem - by Radioroslyn - 02-15-2021, 11:35 PM
RE: 37-60 alignment problem - by madsowry - 02-17-2021, 04:08 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
The list of my radio & TV collection!
A little light Saturday positive about our hobby in our feed... My new every Saturday video about antique radio equipme...RadioSvit — 02:12 PM
Model 70 Cabinet Trim
musar , Well if you have any more questions feel free to post away . Sincerely Richardradiorich — 08:56 PM
Model 70 Cabinet Trim
Although I have not made any cabinets or cabinet parts for a couple of years, I still have some parts left over, includi...Steve Davis — 06:26 PM
philcorepairbench.com - shadow-meter
Thanks Ron. But I can't find those articles.fenbach — 02:43 PM
Model 70 Cabinet Trim
Thank you, Gary. Before making my original post, I had clicked on "Steve Davis Cabinets" only to find that it...musar — 02:25 PM
philco predicta
Welcome to the Phorum, cgl18! I am not your resource for television repair, but lots of friendly help is available here...GarySP — 02:12 PM
Model 70 Cabinet Trim
Welcome to the Phorum, musar! You can send Steve Davis a private message (PM). The site is at the top of the Home page...GarySP — 02:09 PM
Model 70 Cabinet Trim
How do I contact him? The only contact information for him I could find when searching online was a telephone number th...musar — 10:38 AM
philco predicta
Hello, good afternoon, I would like to ask what the possible problem could be if I don't have an image on the screen. I ...cgl18 — 10:19 AM
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM

[-]
Who's Online
There are currently 672 online users. [Complete List]
» 1 Member(s) | 671 Guest(s)
Avatar

>