Schematic Needed

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wtcmeng
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Schematic Needed

Post by wtcmeng » Thu Feb 15, 2018 12:27 pm

Does anyone have a schematic for a Dayton AF200 FM/SCA Receiver? The manufacture is out of business and all I have been able to find on google is the operation manual.

Thanks,

Eric

ncradioeng
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Re: Schematic Needed

Post by ncradioeng » Fri Feb 16, 2018 11:17 am

I have the manual and it does not have a schematic.

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Shane
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Re: Schematic Needed

Post by Shane » Fri Feb 16, 2018 11:51 pm

Eric, I think someone answered you with what you need over on the CRTech forum.
Mike Shane, CBRE
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kkiddkkidd
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Re: Schematic Needed

Post by kkiddkkidd » Sat Feb 17, 2018 12:15 pm

With the demise of Dayton and now Hamtronics... Does anyone know of a source for good reasonably priced fixed tuned FM & WX receivers?

The Inovonics receivers are wonderful but are far, far out of the price range of most of my clients. I have been using Rolls FM rx's and scanners for the last few installs that I have done but would rather have something fixed tuned.

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TPT
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Re: Schematic Needed

Post by TPT » Sat Feb 17, 2018 7:41 pm

I've gone to old analog "hi-fi" tuners off e-bay, both for off-air monitoring and EAS. Have to use a rack shelf (or sit them on top of something else) & out of the box I replace the filter caps. But they have the nice feature of coming back on after power failures tuned to the right station.

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NECRAT
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Re: Schematic Needed

Post by NECRAT » Sun Feb 18, 2018 9:05 am

TPT wrote:
Sat Feb 17, 2018 7:41 pm
I've gone to old analog "hi-fi" tuners off e-bay, both for off-air monitoring and EAS. Have to use a rack shelf (or sit them on top of something else) & out of the box I replace the filter caps. But they have the nice feature of coming back on after power failures tuned to the right station.
Just be careful of the Radio Shack (Realistic brand) TM-150 AM/FM tuner. I found from past experience, the FM can be muddy, and have had issues with the EAS decoders in the units actually decoding tones off of it. (Not with the AM side, which does work ok.)
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spareparts
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Re: Schematic Needed

Post by spareparts » Sun Feb 18, 2018 9:29 am

TPT wrote:
Sat Feb 17, 2018 7:41 pm
I've gone to old analog "hi-fi" tuners off e-bay, both for off-air monitoring and EAS. Have to use a rack shelf (or sit them on top of something else) & out of the box I replace the filter caps. But they have the nice feature of coming back on after power failures tuned to the right station.
The Bogen DST1 Digital Stereo Tuner might fit the bill for the FM portion. Around $250.00. Set all the presets to the LP-1
I deployed a WX250 Rack-Mount NOAA Weather Radio Receiver from Progressive Concepts at work. Just shy of $500.

SP
Last edited by spareparts on Sun Feb 18, 2018 9:37 am, edited 1 time in total.

TPT
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Re: Schematic Needed

Post by TPT » Sun Feb 18, 2018 9:33 am

(Reply to NECRAT) I usually look for "hi end" brands like Carver or Sony--have had good luck doing that. Filter cap replacement is a requirement--these are usually 35~45 year old pieces of equipment. However, these older tuners are usually easy to work on. Just need to watch out for the dial cord!

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Shane
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Re: Schematic Needed

Post by Shane » Sun Feb 18, 2018 11:42 pm

Gorman-Redlich still make NWS receivers? And can you still buy replacement dial cord? I used to have a spool of it.
Mike Shane, CBRE
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TPT
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Re: Schematic Needed

Post by TPT » Mon Feb 19, 2018 7:46 am

Ask Jim Gorman (740) 593-3150. Jim's "plant" (old house on the west side of Athens) is 45 miles from me. I'm sure he probably could build you one.
(They're pricey, but they do work well).

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kkiddkkidd
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Re: Schematic Needed

Post by kkiddkkidd » Mon Feb 19, 2018 8:21 am

Shane wrote:
Sun Feb 18, 2018 11:42 pm
Gorman-Redlich still make NWS receivers? And can you still buy replacement dial cord? I used to have a spool of it.
Now that you mention it, I just saw an ad for his NWS RX in one of the trade mags...
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kkiddkkidd
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Re: Schematic Needed

Post by kkiddkkidd » Mon Feb 19, 2018 8:22 am

I bought a couple of those old VHF GE monitor receivers a year or two ago and they work good but now crystals are getting harder to source so was hoping that someone had found a more modern replacement.
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Kevin C. Kidd CSRE/AMD
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wtcmeng
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Re: Schematic Needed

Post by wtcmeng » Mon Feb 19, 2018 1:01 pm

Shane wrote:
Fri Feb 16, 2018 11:51 pm
Eric, I think someone answered you with what you need over on the CRTech forum.
Shane they did. Thanks,

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