[Heathkit] HW-101 mic gain

Mon, 29 Dec 2003 10:57:22 -0500

I can remember having to run my HW-101 mic gain at the 2 or 3 o'clock
position also.  It never really bothered me, since I was not all the way to
the end of the travel of the pot.  I think it's pretty much typical for
the -101.

73,

Mike
KG8L

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Bwana Bob
Sent: Monday, December 29, 2003 10:03 AM
To: RJ Mattson; [email protected]
Subject: Re: [Heathkit] HW-101 mic gain

Yes, RJ, in my opinion, that's normal. Again, it depends on how good the
driver and finals are and how well the rig is aligned. I use the same
Heath dynamic mic, its the HDP-21A.

There was a mod to improve drive and mic gain by removing the 10k
resistor (R202) at the input to V5A and replacing it with a jumper.
Later rigs already have this mod, but it the case of my HW-100, it made
a big difference as did the SBM-102-1 mod kit that assures the same
driver-preselector peaking for receive and transmit.

		73,

			Bob WB2VUF

RJ Mattson wrote:
>
> Hi Bob
> I have the original Heath desk mic circa 1982 and need to have the mic
> gain at 2 o'clock for ssb. Is this then normal also?
> bob...w2ami
> http://www.qrz.com/callsign/w2ami
>
> ----- Original Message -----
> From: "Bwana Bob" <[email protected]>
> To: "RJ Mattson" <[email protected]>
> Cc: "Heathkit Mailing List" <[email protected]>
> Sent: Thursday, December 18, 2003 8:56 PM
> Subject: Re: [Heathkit] HW-101 mic gain
>
> > Yes, that is probably normal. It depends a lot on how well the radio is
> > aligned, and particularly the condition of the 6CL6 driver tube.
> >
> > Bob WB2VUF
> >
> > RJ Mattson wrote:
> > >
> > > In tune, I have to turn the mic gain control to 3 oclock to get full
> output. Is this a normal position for tune and transmit?
> > > bob...w2ami
> > > http://www.qrz.com/callsign/w2ami
> > >
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