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

model111 recapped new resistors faint sound
#1

i just recapped this radio put all new resistors works picks up stations but with volume all the way up very faint sound can turn it down to no sound when static comes in its loud ahd what do you hook to ground side of antenna any advise to a carpenter working on a radio denver Icon_rolleyes Icon_confused: Icon_idea Icon_lol
#2

Well You got alot of possibilities for having poor sensitivity. A weak tube, an alignment issue, or an improper voltage somewhere can give you these symptoms. How to troubleshoot? First get out the voltmeter check voltages to see if they are what they should be as per the diagram. Test tubes. Get a signal generator and see how sensitive the RF and IF stages are. Does it seem to pickup just the very strong stations in your area? What sort of antenna are you using?
Terry
ps Please use caps and periods. I'm not trying to be a wise guy
but makes it a bit easier to follow where thoughts start and stop.
tnx

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#3

Thanks. Picks up local and some in Ohio, Midwest but faint .Sounds like i have a volume problem. Does the antenna suppose to arc when touched to antenna? Trying to use old outdoor tv antenna. Oh live in Wise Virginia.
#4

Does the antenna suppose to arc when touched to antenna? Trying to use old outdoor tv antenna.

Well it can. The Capacitor block #61 (ac line filter)provides a path for small amount ac voltage from the ac line to the chaiss. The primary of the antenna coil is connected to the chaiss and the antenna. If you ground the chaiss to a water pipe or radiator that should eliminate that issue. Your tv antenna lead is it part of a cable system or is it the flat 1/2" wide two conductor stuff (300ohm twin lead)?
Terry

When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
#5

Going to be the old type flat wire. Can i ground it to the ground via meter base outside?
#6

A TV antenna does not make a good, efficient antenna for AM signals. Old radios such as the Model 111 were designed for use with a long wire antenna, erected outdoors, 50 to 100 feet in length and built as high as possible and as far from outside utility wires as possible.

In this day of neighborhood associations and such, however, erecting an outdoor longwire is not always possible. An acceptable substitute is to run a piece of thin wire, 25 feet or so in length, around the baseboard of the room the radio is in. One end connects to the ANT terminal on the radio; the other end does not connect to anything.

As for a ground, I suggest you find the main water line coming into your home. If it is metal, connect a clamp to the pipe and a wire to this clamp (being careful to not damage the pipe in any way). This will serve as a ground. If the water line is not metal, though, this will not work. Others will chime in with suggestions, I am sure. The utility ground may be OK.

--
Ron Ramirez
Ferdinand IN
#7

Thanks to you guys good help. Icon_mrgreen




Users browsing this thread:
[-]
Recent Posts
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM
Philco 42-345 Restoration/Repair
Today I've been reading through the site trying to learn more about this radio. I also soldered the lose power cord cabl...osanders0311 — 08:24 PM

[-]
Who's Online
There are currently 2408 online users. [Complete List]
» 1 Member(s) | 2407 Guest(s)
Avatar

>