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, 2025) x

Thread Closed

Linear Mode
High-Efficiency Aerial Question
Chuck Schwark
Phorum Expert
*****
Posts: 1,703
Threads: 55
Joined: Sep 2005
City: Evanston, IL
#4

03-07-2006, 05:36 PM
Don't know, but it's an RF transformer. Never had one to take apart. Specs and Philco info do not say anything either. Don't know if there was any impedance transformation either. A dipole has a nominal impedance of 75 ohms. Don't know what that twisted-pair lead-in wire was. The transformer could have been 1:1, but I suspect the nominal radio balanced input impedance is probably higher. Won't be critical for reception anyway.

Did you get the two jpegs I emailed you from work? Didn't see a reply from you about them. Lemme know...
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
Website Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
[No subject] - by Chuck Schwark - 03-07-2006, 10:16 AM
[No subject] - by Robbie Roberts - 03-07-2006, 04:19 PM
[No subject] - by Chuck Schwark - 03-07-2006, 05:36 PM
[No subject] - by Robbie Roberts - 03-07-2006, 06:01 PM
[No subject] - by rjm - 03-07-2006, 06:33 PM
[No subject] - by Robbie Roberts - 03-07-2006, 06:40 PM
[No subject] - by rjm - 03-07-2006, 08:20 PM
[No subject] - by Robbie Roberts - 03-07-2006, 08:32 PM
[No subject] - by rjm - 03-07-2006, 08:52 PM
[No subject] - by Robbie Roberts - 03-07-2006, 09:13 PM
[No subject] - by rjm - 03-07-2006, 09:24 PM
[No subject] - by Robbie Roberts - 03-07-2006, 11:14 PM
[No subject] - by rjm - 03-07-2006, 11:35 PM
[No subject] - by Robbie Roberts - 03-08-2006, 02:44 AM
Antenna - by Doug Houston - 03-12-2006, 12:44 AM
[No subject] - by BDM - 07-13-2008, 02:08 AM
[No subject] - by exray - 07-13-2008, 03:21 AM
[No subject] - by BDM - 07-13-2008, 03:32 AM
[No subject] - by exray - 07-13-2008, 03:37 AM
[No subject] - by BDM - 07-13-2008, 03:41 AM
[No subject] - by etech - 07-13-2008, 11:14 AM
[No subject] - by BDM - 07-31-2008, 11:52 AM
Re: High-Efficiency Aerial Question - by BDM - 09-11-2008, 06:19 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 71 Code 125
Hello,  I am in need of a schematic for this radio. Mine has the three separate circular tube shields and a shadow me...dconant — 08:06 AM
Stromberg Carlson 1500 Squeal
And life just keeps getting more complicated.dconant — 07:57 AM
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM

[-]
Who's Online
There are currently 3384 online users. [Complete List]
» 4 Member(s) | 3380 Guest(s)
AvatarAvatarAvatarAvatar

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