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

Thread Closed

Yet another 16B (I'm getting a collection of these!)
#6

By any chance is your new acquisition, or any other 16B in your stable, a CODE 121? I need to know what the correct B+ voltage should be for a CODE 121 (the one with an 80 rectifier, not the 5Z3 version). See my previous post (no responses): http://www.philcoradio.com/phorum/showth...p?tid=6777. The only voltage table I have found is for a CODE 122. I even ordered Chuck's Data Packet for the 16B, but alas it only has the 122 voltage table (plus a list of parts changes, which does not help).

Of course, the voltages MAY be the same for the 121 and 122! But I have checked everything, and the radio has been completely restored (recapped, resistors, tubes, etc.). It even works - all bands! But the maximum AVC voltage I can get with the strongest local BC band station is about -5 volts. I would like to know if the voltages are correct before going further.

Nothing is heating up, and in fact the radio is drawing only 100 watts at 115 volts input (spec is 115). The output and driver tube bias voltages appear reasonable (-26.5 output and -12.8 driver). B+ resistance to ground is dead on correct both with and without the speaker field connected, so there is no short to ground. I used 10mfd filter caps, so if anything, the B+ should be HIGHER than normal.

THANKS!


Messages In This Thread



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 1390 online users. [Complete List]
» 2 Member(s) | 1388 Guest(s)
AvatarAvatar

>