[Heathkit] tubes in the HW101

[Mark Nace]

Hi everyone,
I seem to remember that a while ago, some were saying that the 6AU6 could replace the 6HS6 in the HW-101, and after realignment it will work okay.  Same base diagram, and roughly the same characteristics, and are both sharp cut-off (I think).  

Anyway, does anyone have a verdict on this sub?  

Thanks and 73
Mark
N5KAE



----- Original Message ----
> From: Tom NØJMY <n0jmy at hayseedhamfest.com>
> To: Dick KF4NS <kf4nsradio at verizon.net>
> Cc: Tempe Heath List <heath at lists.tempe.gov>; heathkit at mailman.qth.net
> Sent: Friday, February 27, 2009 7:41:45 PM
> Subject: Re: [Heathkit] tubes in the HW101
> 
> Hi, Dick.  Ken Gordon W7EKB will concur with you.  He uses 6AH6's in 
> place of 6HS6's in at least one of his SB-line transceivers and he's 
> quite enthused.  I believe, Gm spec's notwithstanding, that there is 
> very little noticeable difference between the two except the price.
> 
> It is also reputed to be a more stable replacement for 6AU6's in VFO 
> applications such as in the VF-1.  Even more so if the B+ is dropped 
> down to +108V.
> 
> 73,
> Tom NØJMY.  .
> 
> www.hayseedhamfest.com
> Multi-section Can Capacitors
> for Heathkit, Drake, Halli, Hammy, more...
> 
> Dick KF4NS wrote:
> > While I was doing some tube inventory, I came across what appears to 
> > be a sub for the 6HS6. I have several 6AH6 tubes which, depending on 
> > the cross ref direction, can be used but have never heard of anyone 
> > trying it.
> > 
> > The main differences appear to be the Mu, gain and interelectrode 
> > capacitance. Not sure if any would dramatically affect the operation 
> > in the assigned purpose for the 6HS6s. Any opinions? Oh, and the 6AH6 
> > is much cheaper today.
> > 
> > 73, Dick KF4NS
> > St Petersburg, FL 33714 USA
> > Keep The Glow! 
> > 
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