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

Thread Closed

Philco 87 alignment question/RESULTS
#5

I made my alignment tool and everything went by-the-books, so to speak, until the very last step. (RF tubes 3rd and 2nd received only a minor adjustment to get a minimum signal) The first RF tube's neutralization condenser showed the meter going down as I turned it. The more I turned it, the more it went down. It felt super loose. So I took it back to where it was before and, of course, the meter went up until I could turn the condenser no more. No matter what changes I made, the results were always repeated. I disconnected all of the test equipment and turned the radio on and I would describe the operation as completely satisfactory. If I adjust the first condenser now, it merely lowers the signal. So it's more or less where it was before. When I have the ground connected, the set works much better, but without it is not bad at all. If I stick a 2' wire on the antenna post (and no ground), I can pick up my 4 strong stations crystal clear and the Volume Control works. What it the control on the right side called?


Messages In This Thread
Re: Philco 87 alignment question - by Ron Ramirez - 01-21-2012, 06:00 PM
Re: Philco 87 alignment question - by DKinYORKpa - 01-21-2012, 06:41 PM
Re: Philco 87 alignment question - by Ron Ramirez - 01-21-2012, 09:18 PM
Re: Philco 87 alignment question - by DKinYORKpa - 01-22-2012, 11:58 AM



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 1387 online users. [Complete List]
» 2 Member(s) | 1385 Guest(s)
AvatarAvatar

>