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

Thread Closed

Should I align my 46-420 after a recap?
#9

Jbaker Wrote:First, I want to thank everyone for the help. It's great to have a place to get some expert advice. You are bringing many radios back to life!

I aligned the radios and they seem to work well. When I place my hand on one of the radios near the antenna, the volume increases significantly. The other one is not affected as much. the one that is sensitive is the one that I installed the new loop antenna. I double checked the number of loops, they are the same. I did use a slightly larger gauge magnet wire. The volume is sufficient but not as loud as the radio with the original antenna. I should probably leave it alone but now it bugs me. Is there a way to tune the new antenna?

Jim

If you had an inductance meter it would be a piece of cake. Otherwise you're limited to trial and error. If my thinking cap is on straight you need to add more inductance if your hand increases the volume. If you're willing to dive in try adding about one turn at a time while listening on the LOW end of the band, around 550. You're probably not off more than a turn or two. In my playing around I've found those loops can be critical to about half a turn if you're being precise. Be sure to tweak the antenna trimmer cap at the HIGH end, usually 1400 or so, each time you make a change. If you run out of trimmer range you'll know you have gone too far.


Messages In This Thread
Re: Should I align my 46-420 after a recap? - by exray - 10-07-2011, 05:39 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 2590 online users. [Complete List]
» 2 Member(s) | 2588 Guest(s)
AvatarAvatar

>