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

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco 42-380X Reception problems
#19

Dave,

First, I think I misinformed you that compensators 4 through 4E don't effect sensitivity. 4A and 4B definitely do, as they help tune the resonant frequency of the antenna you are using. (I edited my post above.) I would advise to adjust those compensators with the radio connected to the built-in loop, and follow the alignment instructions in whatever service information you have. If you have the Rider pages from Nostalgia Air, use the table and the notes just under the parts list.

Once you correctly adjust the IF compensators 29 through 34, you shouldn't need to touch them again unless you change out a component that changes their resonant frequency.

Steps 5 and 6 of the table in the Rider's alignment instructions show how to use the signal generator for the short wave bands. The alignment chapter in Elements shows how to make a loop of wire to use instead of connecting the signal generator to the antenna lead as you do when adjusting the IF cans. Other than that the only change in the operation of the signal generator is to change the frequency. Once you get a feel for the signal generator, go through these steps in order. If after following these steps sensitivity is an issue, more in-depth troubleshooting is needed.

I can't stress enough how helpful the Philco service packages are that you can get from Chuck Schwark. They are clear and easy to read, and usually more complete than the free ones on Nostalgia Air.

John Honeycutt


Messages In This Thread
Philco 42-380X Reception problems - by David B - 09-14-2008, 09:51 AM
Re: Philco 42-380X Reception problems - by Raleigh - 09-27-2008, 05:09 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model 38 code 121 not receiving signal.
So one last question before I finish this radio. Regarding the speaker and output transformer. I salvaged the original o...Stormlord5500 — 09:31 AM
462ron
It’s on the bottom of the homepage of our Philcoradio.com homepage! Ron462ron — 07:20 AM
Model 70 Cabinet Trim
Steve might have some trim left. Not sure he is making anything.morzh — 06:12 AM
Model 70 Cabinet Trim
Hello musar, First all welcome to the forum and yes that is true that steve stopped making trim . Sincerely Richar...radiorich — 12:13 AM
Model 70 Cabinet Trim
I have recently come into possession of a Model 70.  The trim around the base needs to be replaced.  If this were years ...musar — 12:07 AM
philcorepairbench.com - shadow-meter
Anyone know of a way to recover these files from the repair bench? Thanks. fenbach — 11:16 PM
Philco model 38 code 121 not receiving signal.
That's true. Of course If I were to get a vtvm I'd probably have to sink money in to it to get it working right. Probabl...Stormlord5500 — 08:44 PM
Philco model 38 code 121 not receiving signal.
A DMM is good enough. One rarely has to measure indictance, but if you do, short of getting a serious LCR meter (I hav...morzh — 07:35 PM
Testing a speaker and output transformer Trutone A2-G
You guy's are right on. I found a broken wire on the speaker plug that I replaced and all is well now. Have better volu...murf — 03:43 PM
Philco model 38 code 121 not receiving signal.
I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is ...Stormlord5500 — 03:07 PM

[-]
Who's Online
There are currently no members online.

>