kc
Mudduck
Posts: 4
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Post by kc on Jan 29, 2017 9:04:34 GMT -5
So far these are the most details I can find out about these radio's , I can't wait to get the SAM's I ordered !! This will be a fun project. 73 kc
Credit to: CB DAZE: October 2009 A continuation of Woody's 'Nuff Said column from the CBGAZETTE website
Hello Woody, I thought you might want to know that some of the information on your Hy-Gain V review page at www.cbgazette.com/rev_hygainv.html is not correct. The 674A that you have photos of on that page is definitely NOT a stock configuration - the lighted toggle switches are a modification added by someone. The 674 and 674A had the same push buttons as the 674B. The 674 had the VFO socket on the back, as pictured; the 674A was the same internally as the 674, but the VFO socket and wiring was left out. There was either an empty hole or a blank panel, depending on the vintage of the 674A. A wiring harness and instructions was included with later model 675A VFOs so they could be added to the 674A (and other 6xxA models, excepting of course 623A)that did not include the socket. Another way to tell the difference between the 674/A and the 674B is the 674/A models used a 4-pin mic jack; the 674B a 5-pin DIN. There is also an access hole on the back of the 674/A models for adjustment of the "Load" capacitor. This hole is absent on the 674B. The speaker grille is also in a different location, being on the side of the 674/A and the bottom of the 674B. There are other subtle differences in the outer case design, but these are the big ones. From the pic on your page, the model shown is quite definitely a 674, as is shown clearly by the model tag. The 674A would be labeled as such, and did not have the VFO socket screwed to the chassis. I live in Lincoln, Nebraska, and work in the former Hy-Gain plant. I've seen many of the various flavors of 674 over the years (although I did not work at Hy-Gain in those days). You are correct in that it is the easiest 10-Meter conversion ever - I have a 674A/675A that I put on 10meters many years ago, and currently another one on the bench for a friend undergoing the same conversion. A point of trivia, the 675A VFO can be connected to the 674B - if you know what you are doing. It requires adding an 11.272 crystal in the carrier oscillator circuit, some re-wiring of the synthesizer switching around the mode switch, and the 674B MUST have a black-label crystal filter. The later versions used a silver labeled crystal filter that was broader (compromise for AM operation) and does not work as well. I did one of these years ago, and it's probably still floating around here somewhere. It may be the only one in the country, AFAIK. These days, it's not worth the effort, of course. But it can be done. Jim.
Again Thank-You Woody and Jim !
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kc
Mudduck
Posts: 4
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Post by kc on Jan 29, 2017 1:41:29 GMT -5
It looks like there are 3 variants of this radio, 1. M#674 , 2. M#674a , 3. M#674b Also 2 variants of the VFO , 1. M#675 , 2. M#675a I ordered the SAMS #70 for the radio variants 674 / 674a I also ordered the SAMS #64 for both variants of the VFO 675 / 675a Both were on E-bay, very reasonable,They should be here next week, And I would be glad to Scan and Share with anyone interested. Any info regarding this Radio and VFO would still be greatly appreciated.
Thanks again!! 73's
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kc
Mudduck
Posts: 4
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Post by kc on Jan 29, 2017 0:25:31 GMT -5
Thank-You Sandbagger for replying, I am confused too. You wrote: "The Hy-Gain Hy-Range 5 was offered as two versions, the 674a with the bat handle toggle switches that light up on the tip is the version that had the VFO jack on the back, while the updated model, the 674b, had push button switches and no VFO jack." I wonder if I have an Export version or just a weird variant? Because I have the push buttons upfront, But, On the back it has a TVI adjustment, Antenna Tune adjustment, Antenna Load adjustment, Receiver jack, and the VFO jack, All stamped/ labeled into the chassis. My main concern is setting this Rig up properly, The VFO has a calibrate button on it, But I don't know the proper procedure to calibrate, And my guess is there is a SOP in a manual, Or in somebodies memory banks that explains all. The front of my the radio looks like this, With push buttons:
While the back of my the radio looks like this, With the VFO jack:
And the back of the radio M#674-B listed at cbtricks.com looks like this:
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kc
Mudduck
Posts: 4
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Post by kc on Jan 28, 2017 19:08:10 GMT -5
Hello to all,
This is my first post, So I will try hard not to seem to stupid, I have always like Radio Communications since my first set of Walkie-Talkies, And now that I have been forced into retirement against my will, I would like to start this hobby again! I passed my Tech license a couple of years ago, But I never set a station up, So.... Its time! I set my 11 meter up first, 10 meter 2nd, and I am working on 6 meter next, Its all old equipment I already had, But most of it works, And its keeping me occupoed, Out of trouble, and at home where the Warden (wife) can keep an eye on me.
So to the question, The warden coerced me into going to a Flea market with her a few weeks ago, Once there, I was able to give her the slip for about 20 minutes, In that time I found an Old 23 channel Hy-gain, Being from Nebraska I immediately took an interest in this radio, The price was right, $10.00 sold! The ID tags are completely missing, And the only means of Identification are from the Internet, So I am looking for Schematics, Operating Manual, Any info on how to setup, Calibrate the VFO and Antenna Tune and Load, Basically , How do I use this radio correctly?
I have read some post here on Grumpy's, But I could not find any specifics, This is a really interesting radio, And its reception is far better than my stock Uniden Washington, It does turn on , It keys up, but with weak audio, I think it has Microphone issue, possibly bad cord, Other than that I am not sure. I am including a couple of pics for reference, Thanks for any help. 73's
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