[Hallicrafters] HT-17 and HT18

[Carl]

For #2 replace the paper caps (the audio ones arent activated unless in 
NBFM) and check resistors for tolerance. Then align and select tubes for 
best output. A 1614 will work better than a 6L6 on the higher bands, the 6L6 
should be metal.

The spec is at least 4W from 80-15M and 2.5W on 10M and I get more than 
that. Its possible yours is out of alignment or a PO changed the 20/15 links 
for a different impedance.

I use mine as a QRP rig and also to drive a HT-9.

Carl
KM1H


----- Original Message ----- 
From: "Jack Schrader" <w1jhs at myfairpoint.net>
To: <alessandro.meregalli at ubs.com>; <hallicrafters at mailman.qth.net>
Sent: Monday, June 14, 2010 8:43 AM
Subject: Re: [Hallicrafters] HT-17 and HT18


>I would suggest Gary Brown, here in Maine, for the transformer rewind. He
> can be found at : xfrmrs at roadrunner.com
> ----- Original Message ----- 
> From: <alessandro.meregalli at ubs.com>
> To: <hallicrafters at mailman.qth.net>
> Sent: Monday, June 14, 2010 2:50 AM
> Subject: [Hallicrafters] HT-17 and HT18
>
>
>> Dear all,
>>
>> Question 1:
>> I own a nice HT-17 transmitter but the power supply transformer has gone.
>> Last time I switched it on all went bad and the transformer fried/burned.
>>
>> I suppose a replacement with the original type will be very difficult if
>> not impossible.  I read on the Chuck Dachis "Hallicrafters" book that
>> someone in the US will rewind transformers and this would be a very nice
>> option to save the originality of the rig.
>> The other option could be to substitute the damaged transformer with a 
>> NOS
>> one giving the same voltages and max current ratings but on the HT-17
>> manual I cannot find any electric data of this transformer.
>> What should I do ?
>>
>> Question 2:
>> I own a nice and working HT-18 exciter. In the M.O. switch position (VFO)
>> on 80m i get 3W output, on 40m 4W and on 10m 2.5W which is as per
>> specifications.
>> Unfortunately on 15m and 20m I only get 1W or below.  Is just a question
>> of  trim adjustments ?
>>
>>
>> Mni tnx es
>> 73, Alex HB9DTA
>>
>>
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