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 Post subject: Eico HFT-94 AM Tuner
PostPosted: Jun Sun 09, 2019 9:31 pm 
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Joined: Jun Sun 09, 2019 8:49 pm
Posts: 2
My Eico HFT-94 Tuner has sat on the shelf unused for more than 20 years. Today, I fired it up with reasonable success. Pulling in several stations with good audio. However, after this long being out of service, I think a check of performance may be in order. Cannot seem to find my manual on the HFT-94. Does anyone have a PDF copy of the manual or alignment instructions?

Thanks,

Jerry


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 Post subject: Re: Eico HFT-94 AM Tuner
PostPosted: Jun Tue 11, 2019 7:30 pm 
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Joined: May Sat 06, 2006 4:03 am
Posts: 3381
Location: ZIP 23831 South of Richmond, VA 25 miles down the pike.
Appears only a schematic is available. I take it you have searched too.

Bill J.


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 Post subject: Re: Eico HFT-94 AM Tuner
PostPosted: Jun Tue 11, 2019 7:48 pm 
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Joined: Jun Sun 09, 2019 8:49 pm
Posts: 2
Bill - Thanks for responding. I found the schematic but not the manual. Need the latter for the alignment instructions.

Jerry


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 Post subject: Re: Eico HFT-94 AM Tuner
PostPosted: Jun Tue 11, 2019 10:09 pm 
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Joined: Apr Thu 14, 2016 8:25 pm
Posts: 462
Location: pensacola fl
Hi I have 2 of these tuners and have converted one to stereo am. The alignment is pretty standard just like a full feature AA6 radio. First set the bandwidth to narrow. Then align the I.F. to 455KHZ peaking both top and bottom slugs. Next set tuning dial to 600KHZ and adjust the oscillator slug to peak this. Next peak the transformer between the R.F. amp and the Converter. Next go up to 1400 and adjust the trimmers on the variable cap for max. You should go back and forth between the 600KHZ and 1400 KHZ points to make it track. I am assuming you have a signal generator to do this. Last inject a 10KHZ signal to the detector diode opposite the I.F. transformer and adjust the 10KHZ trap for minimum audio output at that frequency. Now you can set the tuner to wide bandwidth and tune in a station and listen in full fidelity.


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 Post subject: Re: Eico HFT-94 AM Tuner
PostPosted: Jun Tue 11, 2019 10:37 pm 
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Joined: Nov Sat 07, 2009 11:37 pm
Posts: 2116
Location: Sayreville, NJ 08872
I have the HFT-94 and HFT-94A complete manuals.

_________________
Pete, WA2CWA - "A cluttered desk is a sign of genius"
http://www.classicradiomanuals.com


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