1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Home Radios
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 623
Bob Andersen
Phorum Expert
*****
Posts: 797
Threads: 42
Joined: Dec 2008
City: Chicago, IL
#9

10-25-2012, 09:36 PM
Thanks for all the great info guys Icon_thumbup Greater sensitivity sounds like a good thing to me Icon_smile
I like that 19 output stage too - push-pull in one tube. I really hope the output transformer is good unlike my 643.

Both this set and the 643 use 135, 67.5, 2, -3 and -7.5 volts.
I've already been noodling around with some designs using the LR8N3 HV regulator as shown in this article by Leigh Bassett.
(This post was last modified: 10-25-2012, 09:36 PM by Bob Andersen.)
Website Find
« Next Oldest | Next Newest »


Messages In This Thread
Philco 623 - by Bob Andersen - 10-25-2012, 11:51 AM
RE: Philco 623 - by Steve Davis - 10-25-2012, 01:57 PM
RE: Philco 623 - by jerryhawthorne - 10-25-2012, 05:47 PM
RE: Philco 623 - by Arran - 10-25-2012, 07:32 PM
RE: Philco 623 - by TA Forbes - 10-25-2012, 08:38 PM
RE: Philco 623 - by jerryhawthorne - 10-25-2012, 08:51 PM
RE: Philco 623 - by Chuck Schwark - 10-25-2012, 09:15 PM
RE: Philco 623 - by Chuck Schwark - 10-25-2012, 09:36 PM
RE: Philco 623 - by Bob Andersen - 10-25-2012, 09:36 PM
RE: Philco 623 - by Bob Andersen - 10-25-2012, 10:59 PM
RE: Philco 623 - by Chuck Schwark - 10-25-2012, 11:35 PM
RE: Philco 623 - by Bob Andersen - 10-25-2012, 11:45 PM
RE: Philco 623 - by Arran - 10-26-2012, 01:12 AM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
American Bosch Model 802 auto radio
Hi Arran ,  Thanks for your help with this radio.And especial thanks for letting me know to look it up under United Ame...Antipodal — 04:32 AM
Philco 60 Squealing
Usually a wave trap is for keeping IF signals from entering the antenna and from leaving the antenna. You feed an IF sig...RodB — 09:30 PM
Philco 60 Squealing
I just peaked it for the best signal at 600. NULL it for IF frequency, originally it would have been null for 500kh...Chas — 08:05 PM
Philco 60 Squealing
Wavetrap no longer matters.morzh — 05:19 PM
Philco 60 Squealing
Rod, I had checked out your suggestions but did not help. I did solder the ground rivets to the chassis as Chas suggeste...dconant — 04:52 PM
37-690 Bass Choke Replacement
Yeah, I know, Mouser and Digikey don't have "big iron" components. For some reason Philco was messing with the...Radiodial — 04:25 PM
37-690 Bass Choke Replacement
Yes, I just had to deal with that while repairing the 37-604 Philco. Exactly that value choke was gone. And the current ...morzh — 03:52 PM
37-690 Bass Choke Replacement
Ah, now where to find one. I've into this before on smaller sets, I now recall. Hammond makes one that is only rated...Radiodial — 03:27 PM
Philco 38-7 Speaker
Ask the admins to put them together. As for the renaming, while inside the thread, you simply press "New reply&quo...morzh — 02:23 PM
37-690 Bass Choke Replacement
This is the parts catalog. 32-7528 choke is 65H, 10mA, 2,250 Ohm inductance. Find a suitable one.morzh — 02:18 PM

[-]
Who's Online
There are currently 4776 online users. [Complete List]
» 1 Member(s) | 4775 Guest(s)
Avatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Home Radios