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Old 12-15-2017, 09:40 PM
john f john f is offline
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admiral hi-fi curb find

Found this on the curb while at work. Mostly functional as found, cap cans stay nice and cool. One broken wire on the AM antenna, but the FM is way off from the dial. For example, my local classic rock station is 104.3, but it is located around 100 on the dial on this. Chassis is 7N1 tuner and 4S2 amp. Thoughts?
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Old 12-15-2017, 10:58 PM
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Is the AM off as well?

It's a really good looking set.
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Old 12-15-2017, 11:02 PM
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8 tube tuner, mono with push-pull 6V6 amp, transformer powered, attractive case....Aside from not being stereo, what is there not to like?

Probably needs caps, idler wheel, and pickup cartridge, and FM local oscillator adjustment...Once those are refreshed it should happily go another 60 years.
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Old 12-15-2017, 11:15 PM
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Quote:
Originally Posted by Electronic M View Post
Probably needs ... FM local oscillator adjustment...
Maybe check the dial stringing / pointer location first?
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Old 12-16-2017, 08:49 AM
john f john f is offline
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needle is on the money for AM. Dial string was my thought initially until i checked am. Looks like separate tuners to me.
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Old 12-16-2017, 10:45 AM
dieseljeep dieseljeep is offline
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needle is on the money for AM. Dial string was my thought initially until i checked am. Looks like separate tuners to me.
It uses a German FM tuner unit, like many US firms used at the time. There's one string protruding from the unit that is spring return. Make sure it's around the pulleys provided for it. It's actually a good arrangment!
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Old 12-16-2017, 11:40 AM
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It uses a German FM tuner unit, like many US firms used at the time. There's one string protruding from the unit that is spring return. Make sure it's around the pulleys provided for it. It's actually a good arrangment!
Yep, my thought was to look for all sources of mechanical slippage before tuning anything.
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Old 12-16-2017, 10:43 PM
Dude111 Dude111 is offline
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Quote:
Originally Posted by john f
...One broken wire on the AM antenna, but the FM is way off from the dial. For example, my local classic rock station is 104.3, but it is located around 100 on the dial on this.
Wow you can tune way above 107.9 on that then!!


What do you hear when you goto the high end of the band bud? (Might hear some airplanes)


A good find!
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Old 12-17-2017, 11:05 AM
dieseljeep dieseljeep is offline
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Wow you can tune way above 107.9 on that then!!


What do you hear when you goto the high end of the band bud? (Might hear some airplanes)


A good find!
Looking at top view of the tuner, it looks as though someone has been playing around with the adjustment screws.
Find out which one is the oscillator and try to get it to track properly.
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Old 12-17-2017, 11:19 AM
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Agreed....needs to be re-aligned.
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Old 12-17-2017, 11:30 AM
dieseljeep dieseljeep is offline
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Agreed....needs to be re-aligned.
I worked on one of those before! Just the FM tuner unit needs it, not the IF's.
Information is in Sams 404. About a 1958 model.
I like the old-time 6SN7 1st amp and phase inverter in the amp chassis.
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Old 12-17-2017, 02:25 PM
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6SN7 and dual 6V6GT's are a classic combination!
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Old 12-17-2017, 08:34 PM
john f john f is offline
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Over 104 or so I haven't heard anything come through, but I'm in the nyc metro area (northern nj) so I wouldn't be surprised to hear airplanes.

Would any of you kind sirs have a scan of the sams?
Would it be possible there is a resistor out of range in the tuner that is causing this issue? The joker messing with the tuner adjustments was me...i found a strong station and did get it to move towards where it was supposed to be, but not enough. I'm thinking if a resistor is too far out i might not have enough adjustment to compensate.
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Old 12-18-2017, 11:06 AM
dieseljeep dieseljeep is offline
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Over 104 or so I haven't heard anything come through, but I'm in the nyc metro area (northern nj) so I wouldn't be surprised to hear airplanes.

Would any of you kind sirs have a scan of the sams?
Would it be possible there is a resistor out of range in the tuner that is causing this issue? The joker messing with the tuner adjustments was me...i found a strong station and did get it to move towards where it was supposed to be, but not enough. I'm thinking if a resistor is too far out i might not have enough adjustment to compensate.
Try a new 6BQ7 tube. It might be weak and wont oscillate that high. The tuner might have been used on AM all the time, therefore the tube didn't get any plate voltage.
You can use a 6BZ7, 6BC8 or maybe a 6BK7, there's others in the sub guide.
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Old 01-04-2018, 04:20 PM
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Quote:
Originally Posted by dieseljeep View Post
It uses a German FM tuner unit, like many US firms used at the time. There's one string protruding from the unit that is spring return. Make sure it's around the pulleys provided for it. It's actually a good arrangment!
That German tuner is why my Motorola consoles are extremely sensitive, very selective and easy to tune. About equal to the Zeniths IMHO. I have tons of those 6BZ7's
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