Impressive Ron, Not a criticism, but I note some products of the VFO
some distance from the carrier in the unlocked pic which are not
noticable when the HuffPuff is operative due to the other noises. I
guess you must live in a noisy enviroment.
thanks for the pics though.
atb Mike W, G8NXD
--
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On 11 Apr 2005 at 7:26, Ron wrote:
Dear Troy,
Would like to inform you that I included the Huff&Puff circuit into my
BITX17 (converted BITX20 for 18.068...18.168 MHz). In my Photobox
(PA2RF) you can see 2 pictures of the VFO performance made with
MixW.2.10. (witout and with Huff&Puff). The results were (and still
are) amazing! I can easily decode PSK31, RTTY and other digimodes now.
Bye from Holland Ron PA2RF
--- In BITX20@..., "kc8afu1965" <kc8afu1965@y...> wrote: >
Thanks Arv, > > I've had the AFU callsign for about ten years and
you're the first > person to comment on it. I thought it was funny
when it was first > assigned to me but nobody seemed to share my sense
of humor. Thanks > for noticing! > > Thanks for the huff&puff invite.
I've also been looknig at Hans > Summers website and I'm thinking
about trying it out. My current CW > rcvr is the popcorn rcvr from
the qrp homebuilder homepage. It has > an LO freq of approx 2.5 MHz
(4.433 MHz IF)and is pretty stable ( I > think I remember about 2Hz
per minute after warm-up but it's been a > while since I measured it
so I could be wrong) but I am intrigued by > the H&P. Lately I have
been finishing up a presettable frequency > counter that I can run
directly off of my VFO. Now I know where I am > on the band. It can be
found at: > > > > It's
at the bottom of the homepage. > Thanks for the invite and I will
start checking out the H&P group. > > 73's & HPE CUL. > > Troy >
KC8AFU > --- In BITX20@..., "Arv Evans" <arvevans@e...>
wrote: > > Troy > > > > The BITX has also been used for CW. Several
builders have added > a > > center-of-the-filter > > BFO oscillator
that serves both send and receive CW functions. I > took the > >
simple way and > > just added a keyed AF oscillator that plugs into
the mike jack. > > > > Love the callsign. I'll bet you get a few
comments about it > though! > > > > I did not see your name in the
members list for the Huff and Puff > group so > > I will go > > over
there and send you an invite. The Huff & Puff VFO group > forum is a
logical > > extension to the BITX because using an H & P circuit
to stabilize > your > > BITX oscillator > > makes it into a very
stable but still inexpensive rig that is > capable of > > working
with > > narrow filters for CW and PSK/MSK contacts. > > > > Arv K7HKL
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