1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

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

Linear Mode
38-690 Treble/Audio Bandwidth
tbone
Senior Member
****
Posts: 284
Threads: 18
Joined: Nov 2016
City: Cromwell State, Province, Country: CT
#9

03-10-2021, 07:29 PM
Well folks, I couldn't wait till the weekend. I took my chassis out and sure enough, the stop pin was on the wrong side of the bracket. See my picture. I made the correction, and now the pin is on the correct side and I get the correct range of motion. A quick re-peaking of the IF and adjustment to balance the bandwidth was all I needed. Now I hear that famous audio quality  everyone was talking about. The audio is truly amazing.

Thanks to Rich for letting me work on his 37-116! I would have never found it otherwise.

Thanks to RFEENSTRA for the pictures too!

No I truly am a happy 38-690 owner!

   
Tony

“People may not remember how fast you did a job, but they will remember how well you did it”
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
38-690 Treble/Audio Bandwidth - by tbone - 03-09-2021, 06:37 PM
RE: 38-690 Treble/Audio Bandwidth - by rfeenstra - 03-09-2021, 09:43 PM
RE: 38-690 Treble/Audio Bandwidth - by morzh - 03-09-2021, 11:58 PM
RE: 38-690 Treble/Audio Bandwidth - by radiorich - 03-10-2021, 12:52 AM
RE: 38-690 Treble/Audio Bandwidth - by tbone - 03-10-2021, 06:50 AM
RE: 38-690 Treble/Audio Bandwidth - by rfeenstra - 03-10-2021, 02:03 PM
RE: 38-690 Treble/Audio Bandwidth - by rfeenstra - 03-10-2021, 02:18 PM
RE: 38-690 Treble/Audio Bandwidth - by morzh - 03-10-2021, 04:14 PM
RE: 38-690 Treble/Audio Bandwidth - by tbone - 03-10-2021, 07:29 PM
RE: 38-690 Treble/Audio Bandwidth - by rfeenstra - 03-10-2021, 08:38 PM
RE: 38-690 Treble/Audio Bandwidth - by morzh - 03-10-2021, 08:49 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Zenith H725
David - I think I understand but what units are you discussing (Low of 1.7, high of 3.9)? Budget constraints for Ham ...EdHolland — 01:43 PM
My Philco 37-116 Restore
You're doing great. I wish I could be more involved, but my mind is right now preoccupied with the reason I am here in ...morzh — 12:21 PM
My Philco 37-116 Restore
Hope you guys are still with me. I have moved on to the alignment. I completed the IF alignment which was pretty muc...dconant — 10:47 AM
My Philco 37-116 Restore
Hello MrFixr55, Thank you for taking the time to explain. I measured 50 volts where you say. Today the 370 volts at ...dconant — 12:51 PM
462ron
Oh that sucks. It’s something easily overlooked. Hopefully it’s nothing more than a resistor! Ron462ron — 08:08 AM
Philco 46-480 Electronic Restoration
Just confirmed that you are correct. It’s the function generator. I connected the signal output probe to one of the inpu...jrblasde — 07:52 AM
Philco 46-480 Electronic Restoration
Ouch, you may be right. Yes, it is solid state. It’s the signal output of my oscilloscope. May be time to crack that ...jrblasde — 07:27 AM
462ron
If you didn’t put a DC blocking cap between the signal generator probe and the plate of the 1st IF it’s possible you ble...462ron — 07:07 AM
My Philco 37-116 Restore
Hi DConnant, The reason why C127 is isolated from ground is because sets of this vintage did not have the center tap...MrFixr55 — 01:07 AM
Philco 46-480 Electronic Restoration
The shield is on the 6H6. It was, in fact, a missing jumper to connect the main chassis ground to the RF chassis grou...jrblasde — 10:58 PM

[-]
Who's Online
There are currently 1039 online users. [Complete List]
» 2 Member(s) | 1037 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration