HW 16 Audio

[Brian Carling]

Hi David - I can supply crystals for your HW16.

Do you need the HC6U crystals or FT243 ones?
I have both available for the ham bands.

73, Brian - AF4K.com

> Just bought an HW 16 and have been testing it and looking it over.  Quite 
> low receiver audio output, such that I have to connect the speaker output to 
> an external audio amp to hear anything.   Transmits fine  (but my crystals 
> don't fit...1/2 inch between prongs OK, but my crystal prongs seem too big?) 
> Tubes "seem" to check out, but most, including the audio amp 6HF8 have to be 
> pproximately checked on my old Heathkit tube tester.   Schematic appears to 
> show the speaker and headphones jacks in parallel, but the text indicates 
> logic for a series connection, i.e.,  "speaker left connected at all 
> times.....hi Z of headphones causes an effective mute of the speaker..... a 
> shorted phono plug must be inserted into the speaker jackf or headphones 
> only operation."   Observing these points does not improve the audio.   On 
> this rig, one end of the neon in the cathode  of one stage of the audio amp 
> (is this for sidetone?) is disconnected, but there appears to be sidetone 
> nonetheless, although dimininshed (over and above the low audio.)   Saw an 
> earlier post about low transmit audio from 6EA8's, and in fact these are 
> used in the mixer and het oscillator of the HW 16.
> Anyway, I think I got a good deal.  Rig is clean and appears to work 
> perfectly, aside from the audio problem.  I hate that 70's green, however. 
> I'm thinking of repainting the whole shebang black crinkle and replacing the 
> edge meter with a round meter.  If you have any ideas on the audio problem, 
> I'd love to hear them.  Thanks very much.
> Dave
> n2chi
>  
> 
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Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

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This list is a public service of the City of Tempe, Arizona
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