Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Philco 89 how well do they perform
#7

Nope, no games here. I just did the 89 mod because I'd heard - and read online - so many people complaining about the original autodyne circuit and 36 tube. I found the "Super 89" mod to be very hot on AM and the "police" band.

And then I did another 89 set, this time stock...and it was just as sensitive on the police band as is my Super 89.

The keys to a successful 89 restoration? Bake and rewind that oscillator coil...make absolutely sure the off-on-band switch is clean...all wiring in good shape...and the usual, replace all paper and electrolytic caps and do a careful, complete alignment.

I offered the "Super 89" mod just for those who get fed up with the original circuit built around a 36 tube. The original circuit can be very finicky; but when it works, it works well.

--
Ron Ramirez
Ferdinand IN


Messages In This Thread
Philco 89 how well do they perform - by radiorich - 06-22-2009, 01:27 AM
Re: Philco 89 how well do they perform - by exray - 06-22-2009, 07:26 AM
Re: Philco 89 how well do they perform - by exray - 06-24-2009, 02:55 AM
Re: Philco 89 how well do they perform - by Ron Ramirez - 06-24-2009, 08:44 AM
Re: Philco 89 how well do they perform - by exray - 06-24-2009, 09:18 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM
Preliminary work on wife's Silvertone 2014
Safety caps arrived today.  Soldered one in and had a successful first power-up.  No magic smoke escaped and it tunes in...glyphmon — 09:53 PM

[-]
Who's Online
There are currently 1650 online users. [Complete List]
» 1 Member(s) | 1649 Guest(s)
Avatar

>