[Boatanchors] Zero beat boatanchor on CW

[Artmouton]

Glen - thanks - I probably knew that when I used my HT 37 and HQ145 in the 
'60s but, like I said been on rice boxes too long.  It is a perfect response 
and a memory kicker as to zero beat and the reason for it.
Thanks & 73's
Art K5FNQ


----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: "Artmouton" <k5fnq at cox.net>; "Boatanchor List" 
<boatanchors at mailman.qth.net>
Sent: Wednesday, May 25, 2005 7:15 PM
Subject: Re: [Boatanchors] Zero beat boatanchor on CW


> Put your signal exactly on the same frequency as the
> other station.  If you tune for "tone" you might just
> be on the opposite sideband and be "way off" in
> frequency.
>
> Tune the receiver until the tone from the other
> station cannot be heard but you can tune to either
> side and get a tone.  Then use the "spot" function and
> adjust your transmit frequency until there is no tone
> but you can tune to either side and get a tone.
>
> Now, you are "zero-beat".  You can then tune your
> receiver for whatever frequency tone that you like to
> hear without affecting the frequency of the
> transmitter.
>
> On AM operation you can just use the "spot" function
> and tune across the other station.  You will hear a
> tone as you get near the frequency, then it will go to
> zero and then increase in frequency (the tone).  Go
> back to where the frequency is zero.
>
> Also, on AM you can watch your "S" meter.  When you
> can no longer hear the tone you will notice that the
> meter will start vibrating.  As you get nearer and
> near to the "exact" frequency of the other station the
> needle will slow down, moving very slowly.  When you
> get within a Hz, or so, the meter will be going back
> and forth even slower even taking several seconds to
> move.  When that point is reached you are within 1 Hz
> of the frequency of the other station (plenty close
> enough for "Government Work").
>
> On the 75A4 you will notice that the BFO is actually
> marked "passband tuning".  The dial drag should be
> adjusted so that when this knob is turned that the KHz
> (actually Kcs on the 75A4) does not move.  The PTO is
> actually moved on its axis but the dial doesn't move
> when properly adjusted.  Move the knob until the
> entire white band (not the line in the center) lines
> up with the center mark on the front panel.  This will
> make the receiver seem more like a "rice box".  Also,
> you really need to do this when receiving SSB.
>
> Remember that 160 meters tunes backwards and the
> sidebands are reversed.  That is, what is USB on 80
> through 10 is LSB of 160 and what is LSB on 80 through
> 10 meters is USB on 160 meters.
>
> Glen, K9STH
>
>
> --- Artmouton <k5fnq at cox.net> wrote:
>
> If he is calling CQ do I zero beat on the receiver
> exactly or do I try and match the tone of my VFO (on
> tune) with his signal?  Also, with the A-4, one hears
> both sides of the signal, not just a selectable
> sideband as with the ricebox.
>
>
> Glen, K9STH
>
> Web sites
>
> http://home.comcast.net/~k9sth
> http://home.comcast.net/~zcomco
>
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