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Messages - Motorola Minion

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Sightings / Re: A really white '61 Imperial
« on: May 21, 2018, 12:12:40 PM »
Oh Prunella!  This is why there are many shades of antique white. I am not sure if I ever saw a décor this would fit in with, even the original "parchment" shades. What an otherwise wonderful console.

I bet they stripped it and found the wood underneath to be "paint grade" only.

I have a TV cabinet that is getting sealed and painted some cherry shade. I'm not sure how that will turn out, but the finisher is good at his craft..

Zenith / Re: 1964 Zenith console with drop-in tuner
« on: May 21, 2018, 11:59:15 AM »
The tuner was acting pretty weird on FM, as if there was a muting or quieting function, which there is not. I swapped the 6JK8 and no improvement. There is only an FM and FM stereo selector button, and reception on both was poor. I had an alligator clip and 3 foot jumper on the tuner's antenna terminal but only a few stations came through. Normally this is sufficient for local reception on most tuners I see.

I reconnected the cabinet antenna brown twin-lead and it received much better, almost normal and with nothing connected to the screws.  ???. Then I realized this tuner must have been set up to work with that exact length of twin-lead to the screw terminals.

Chat / Re: Bolstering The Weak Link
« on: May 21, 2018, 08:18:24 AM »
Try putting your antenna where reception on a battery-portable radio is good. I have found this for AM at my work cubicle, where I have good reception only with a 10-foot wire on the floor!

The amplified antenna you chose is the next best thing to a band-specific yagi. With the amp at the dipole, you have the option of adding more coax if reception is remote from your tuner.
Unfortunately, are being discontinued at a time when HD radio is becoming more popular.

A suburban location like yours is a challenge, do not underestimate where you can find signal on your site. It sounds like the situation I had north of Dallas, where the tower farm on the south side toward Ft Worth was blocked by all kinds of stuff nearby.

in that apartment I could only get good reception on an inside wall in the bedroom with the 300-ohm 62-inch dipole, hanging vertically. Rabbit ears that worked fine on the TV, did not on FM.

Tube Consoles / Re: What tubes do you hoard?
« on: May 17, 2018, 01:59:54 PM »
Some old Fisher power amps used 5V3 rectifiers and EL37 outputs. They were in some Fisher Presidents. Their FM tuners sometimes had 6CW4s Nuvistors as RF amplifiers and converters.

I found out about the Fisher use of Nuvistors by experience. A great curbside find a few years back was a Fisher 600-T (for Transistor!!) receiver.  I hauled it home and plugged it in, expecting it to fire right up--being solid-state and all.  But... nothing at all on FM.  So I started rocking switches and tapping on things and then the FM signal gradually became audible.  I looked inside and figured it out.  It's all transistors EXCEPT for those front-end Nuvistors, and it took a few moments for them to warm up. 

Chris Campbell

HH Scott Stereomaster 344 used a nuvistor for FM rf amp, other wise an early SS receiver and super-easy to restore. The 344B used an FET for that stage.

+2 Im with Bill, what fool would toss any pre-Sanyo Fisher in the trash????

Zenith / Re: 1964 Zenith console with drop-in tuner
« on: May 17, 2018, 01:56:45 PM »
This tuner and amp is almost ready to pack up and install. I have been using it for a few weeks now and just a few quirks remain. After figuring out my wiring mistake on the amp, I still have insufficient high frequency response. The circuit for treble looks like the simple "timbre" control on a Magnavox SS receiver. Just a 500K pot in series with a .01 mf cap across the line. Maybe Ill change that to a .0082 or .0068, but will use the decade box to see what value sounds best. Only after I verify the 3" cone tweets are OK*

*I may need to replace some speakers and then fully enclose them, just like another forum member did with an RCA, very easy the way the cabinet is built.

Pictures next time, the record changer is the last big task.

Zenith / Re: Zenith electrostatic tweeter replacement?
« on: May 17, 2018, 01:49:34 PM »
What year is an HF16 from? I can look it up and see how the signal is supplied to it.

I do know that electrostatic tweets were used in most German and some Zenith tube table radios.

In Zenith at least, the interlude series of table radios like the H845 had one and it was connected to the primary winding of the audio output transformer.

Sightings / Re: Magnavox color theatre Singapore 21 - PA
« on: May 15, 2018, 01:45:28 PM »
You wouldn't believe this but I think I saw this one for sale at Kutztown Radio Show last Friday. They had a tag for $75 on it saying the 21FJP22 was good, though it needed the cataract repair. They also had a working Magnavox 23" BW Theatre in Antique White FP, pretty ugly but a fine tube HiFi was inside 8)
Besides Moyer's Electronics, I saw a TV repair van there with a Williamsport (Bill-town) address. Im pretty sure its the same one.

I have a 1963 RCA color TV in that antique white finish with gold air-brushed accents, that is very worn and probably un-restorable as original.

I'm certain the wood is only "paint-grade" and am proceeding to getting it stripped and painted something close to Cherry.

Sightings / Re: Magnavox Console, Atlanta, GA
« on: May 14, 2018, 12:28:15 PM »
I have a 1962 with that 9300 series amp but older-looking tuner face, I would have guessed Astrosonic just by that tuner face though. Thanks for posting yet another interesting Magnavox.

Introductions / Re: Hello from Akron Ohio!
« on: May 14, 2018, 12:19:50 PM »
SK-77 as seen in a local used furniture store, sold for $300 IIRC

Chat / Re: "A-track" (8 track) tapes
« on: May 09, 2018, 03:33:41 PM »
I saw A-track in a CL ad. I laughed myself silly. 4 tracks in stereo=8 tracks. Any musician would understand, if they were of a certain age. I have only a few 8-track tapes for servicing, though I had a player in my first car.
I gave the rest of the tapes away long ago, and exactly what I should do with the 500 cassettes I amassed. I donated many of my duplicate and unwanted vinyl to the local Library for their flea sale.

I still have one 8-track player, in a Zenith Allegro wedge system, and it does not work ::).  Sounds like you got a deal just by showing up, Greg.

Sightings / Re: General Electric Tube console - PA
« on: May 09, 2018, 12:59:58 PM »
 ;D That is a portable with punch. Most had 50C5 or 6AQ5 outputs, and small speakers.

Introductions / Re: Hello from Akron Ohio!
« on: May 09, 2018, 10:54:09 AM »
Welcome to the site, I based my handle on a 1964 Motorola console I bought for my 50th birthday, still waiting for restoration :-[
Your SK-76 is one of the most sought-after (pretty and often found too) consoles in Drexel line. I missed out locally on an SK-77 listed in the classifieds, almost similar?

I certainly appreciate your literature contribution, as I have a couple of loose amps and tuners from the 1960 series.

Tube Consoles / Re: What tubes do you hoard?
« on: May 07, 2018, 09:09:42 AM »
Here's a list that I found of useful audio tubes.  I'm sure there are a lot not included and there are many that go by different numbers and or letters.

6SL7, 6SN7, 6GH8, 6U8, 6DJ8, 6EU7, 12AU7, 12AX7, 6AQ5, 6AS5, 6BQ5, 6CU5, 6V6, 6L6, 6550, KT77, KT88, KT120, 8417, 7408, 7355, 1619, 35L6, 50L6, 45's, 2A3, 300B, 26, 80, KT90, EL37

That is a good start of list. I bought a load of tubes (mostly loose, arranged by number in cigar boxes) from a radio guy who also sold me two TV's in his effort to downsize. I went thru them and gave him back all the radio tubes such as 6A8s, 6K7s including some 45's, which I already have good ones for my low-boy Temple and GE H-51. Not many buyers would be that honest but I am plush with old radio tubes and he had a radio collection of his own.

I have probably 10,000 in boxes and 10,000 loose, untested. Out of all the tube collections I have seen or acquired, 90% of them are TV tubes.

Types added to list above for Hi-Fi are 6CG7, 6FG6, 6E5, 6C9, 7868, 7591 and the uber-rare 6GW8(ECL86)

Sightings / Re: General Electric Tube console - PA
« on: May 03, 2018, 09:45:49 AM »
The seller still has it but was not around yesterday when I was nearby. Ill keep trying. Nobody collects these in PA's backwoods and upstate, so it will be there.
I asked the seller if there was a model number and no reply.  The 7189 is an interesting one and a refined version of a 6BQ5, thanks for noting that Greg. 

I would agree that GE engineering was way ahead of durability here. A few feet of #18 or 20 AWG wire needs to be on the parts list. Maybe even tube sockets.

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