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 Post subject: Zenith M-660A Shortwave Receiver
PostPosted: Mar Tue 10, 2009 9:58 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2168
Location: Park Hills, MO 63601
Certainly not an antique, but one popped up on Craig's List near me. Is this radio rare or valuable? It is in mint condition for $125 OBO. Good looking, but does it bring anything more to the table than a similar Hallicrafters would for half the price?

Image

BTW, there is a minty B600 T/O for $200 in the same area. Like I said before, seems there are good radios available but prices seem pretty high to me. Then again, I'm cheap!

Image

_________________
Mike

From the banks of the Big River, currently living in the lapse of luxury!


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 Post subject:
PostPosted: Mar Wed 11, 2009 1:26 am 
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Joined: May Sun 25, 2008 2:01 pm
Posts: 409
Location: maritimes/florida
hi Schulz,

I had one of those Zenith M660A radios a while back. Its a decent radio and a cut above the similar looking S-120 (and clones). IIRC it had a multi-voltage transformer power supply and covers the LW band.
I don't recall what technique it used for a BFO as opposed to the regenerative IF found in similar radios.

I think 120 is excessive for it by a factor of about 2.


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 Post subject:
PostPosted: Mar Wed 11, 2009 4:49 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 3177
Location: California
I have restored several M-660A's, and sold several. I got $160 plus shipping for one restored example, no sweat.

In my humble opinion, it is worth it! There are no wax caps in it, all ceramic. Just change the filter caps, and you're good.

The alignment is a bit involved, but not difficult to do. Once aligned, the M-660A will outperform an S-120 hands down. not to mention- The LW band works great in this radio.

The tuning is actually quite nice, not touchy, except on the highest band. The audio is VERY nice, almost hi-fi. The dial scale is extremely easy to read, and illuminated from both sides for excellent night viewing.

Yes, it IS a transformer set. The filaments are in a string, but it uses a transformer for higher B+ voltages.
Despite lacking a TRF section, the performance and selectivity is very good.

Honestly, I wouldn't mind having another one. If you can get it for $100, you would get an excellent deal, in my opinion. Which is sometimes wrong.


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 Post subject:
PostPosted: Mar Wed 11, 2009 5:31 am 
Member

Joined: May Sun 25, 2008 2:01 pm
Posts: 409
Location: maritimes/florida
Crosley wrote:
The alignment is a bit involved,

How so? Mine aligned right by the book like you would expect it to.

mac


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 Post subject:
PostPosted: Mar Wed 11, 2009 5:55 pm 
Moderator

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3177
Location: California
macdonald wrote:
Crosley wrote:
The alignment is a bit involved,

How so? Mine aligned right by the book like you would expect it to.

mac


What I said was, "The alignment is a bit involved, but not difficult to do".

No, it is not difficult, just involved. By that, I am talking about the instructions which take aligning each of the bands (top end and ant trimmer, then bottom end and trimmer, then back to top, back to bottom, repeat), then next band and repeat. Then, when you are through with all bands, go back through them again and repeat.

A proper alignment of the receiver is indeed 'involved'. But I repeat, not difficult.


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 Post subject: Re: Zenith M-660A Shortwave Receiver
PostPosted: Feb Thu 16, 2012 5:03 pm 
Member

Joined: Oct Fri 14, 2011 4:57 pm
Posts: 33
Location: Bay City, Michigan
Help Fella's , I have an M660 and can't for the life of me find a schematic a manual anything. This one is in good shape but like all old radios has a humm and don't just want to stick my fingers in there with out a schametic if i can help it. I have searched Sam's everywhere I can think of. Nothing. I have every Zenith schametic up until around 1956 so not there.

Thanks in advance. I will be willing to pay for the dam thing if necessary.

Thanks again,
Dr. Bob


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 Post subject: Re: Zenith M-660A Shortwave Receiver
PostPosted: Feb Thu 16, 2012 7:00 pm 
Member

Joined: Sep Fri 07, 2007 2:27 am
Posts: 3528
Location: Appleton, Wisconsin
It's in Sam's Photofact 872 from March, 1967.

http://img19.imageshack.us/img19/3919/z ... h5m201.jpg

http://img577.imageshack.us/img577/6060 ... h5m202.jpg

http://img850.imageshack.us/img850/7133 ... h5m203.jpg

.


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 Post subject: Re: Zenith M-660A Shortwave Receiver
PostPosted: Feb Thu 16, 2012 11:40 pm 
Member

Joined: Oct Fri 14, 2011 4:57 pm
Posts: 33
Location: Bay City, Michigan
Thanks a lot, got it. Now I will know what the heck I am doing. I do a lot of TO's but this is much different in many ways and the same in many ways. If you know what I mean?

Have a good one.


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