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

Philco 90- not much volume
#1

I have recapped my Philco 90A (early model w/45 push pull tubes) and replaced a couple of out of tolerance resistors. All tubes check good, all shields in place, bakelites restuffed. I am receiving 2 stations very clearly, the loudest is close to my home, the 2nd is a little farther away and not as loud but still easily hearable. After this I have to really strain to hear other stations. Is this all the volume I can expect on farther stations with this radio? I am using a 100' wire antenna 25' off the ground. My RCA 17K is picking up a 1000w station 30 miles away right now like it is next door. Have I missed something? Thanks for all suggestions,
Doc
#2

1. Have you performed the alignment? Without it your gain could be really off.
2. Just in case check the Antenna input RF coil 2 for continuity, and also the primary of the coil 7 (or which is the same, plate voltage on the first 24A tube).

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
#3

As Mike said, most likely an open winding in one of the RF transformers  Check to make sure you have plate voltage on the 24 tubes.

Steve

M R Radios   C M Tubes
#4

I'm on it. I'll let you know what I find. Thanks!
#5

While checking voltages I found a 1 meg resistor to the grid of the 1st audio tube that was reading 2.5 meg. Replaced it and now this thing is blasting all across the dial! Thanks guys.
Doc
#6

Congrats. Still, do the alignment.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
What do I have? Philco 655
hello Adam, What a great looking radio and I agree with mr Fixr and Gary if Ron was still with us I am sure he would re...radiorich — 10:23 PM
What do I have? Philco 655
Wouldn't be the first "Phranken-Philco" to come out of the factory. Kinda like model year end cars built back...GarySP — 07:45 PM
Philco Model 76 Highboy
That's a nice looking cabinet. With a little bit of rub on stain and paste wax that should even out the finish. When you...Radioroslyn — 05:20 PM
What do I have? Philco 655
Hi Adam, Others may know more than me, but it was not uncommon for Philco to run out of cabinets and use one for a new...MrFixr55 — 02:51 PM
What do I have? Philco 655
Haven't been on here in a while, and it's been a while since I've worked on a Philco.  I picked this up a while back, an...adamrobertg — 08:10 AM
Clear Schematic for 41-255
Hello Ross, We have all been there don't worry the guys here have you taken care of !! Sincerely Richardradiorich — 09:35 PM
Clear Schematic for 41-255
What's really funny is I looked at the pages and saw 255 and it took me 30 sec of looking at the schematic trying to fig...RossH — 05:19 PM
Clear Schematic for 41-255
Ross, sorry, clicked on the wrong one. here's the down load for the 41-255 as an attachment.klondike98 — 04:40 PM
Clear Schematic for 41-255
RossH - Were you looking at our copy of the 1941 Yearbook, or one that you found elsewhere?DaleHCook — 04:12 PM
Clear Schematic for 41-255
Ditto. Perfectly readable here. Monitor or computer problems?!rfeenstra — 12:10 PM

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

>