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
Philco 39-116 radio and remote
The transformer I located is from a Philco TV chassis, circa 1948. The part number is 32-8391 I do have the replace...Brad Winder — 08:59 PM
Philco 41-221 Restored
Hello Rod, Wow that radio looks great nice job ! Sincerely Richardradiorich — 07:39 PM
Philco 269 - 444 FIVE VALVE VERSION?
From what I can remember the model 444 "People's Radio" used a special tube/valve called a PenDD61, it was the...Arran — 06:54 PM
Philco 41-221 Restored
Nice Radioslford310 — 06:24 PM
Philco 269 - 444 FIVE VALVE VERSION?
Hi Chaz,  You may want to post the tubes used in your radio.   From Radio Museum, it seems that the set uses some ...MrFixr55 — 05:14 PM
Philco 41-221 Restored
Today my grandson and I finished the restoration of this Philco 41-221. It has had all the rubber coated wiring replaced...RodB — 03:19 PM
Philco 39-116 radio and remote
Hi Brad, I had no idea that the overheating was problematic in this radio.  Do you know the part number of the transfor...RichG — 03:01 PM
Philco 269 - 444 FIVE VALVE VERSION?
From the photo it looks the sockets are screwed and the front one does not even match the hole.morzh — 02:54 PM
Philco 269 - 444 FIVE VALVE VERSION?
Hi Chas a welcome, Perhaps we'll have to reverse engineer this to sort it. So let's start w/what tubes does it use? And...Radioroslyn — 12:28 PM
Philco 39-116 radio and remote
Hi Rich, From my experience, unfortunately it is not uncommon to find the power transformer in the 39-116 to be overhea...Brad Winder — 09:25 AM

[-]
Who's Online
There are currently 1857 online users. [Complete List]
» 1 Member(s) | 1856 Guest(s)
Avatar

>