[Johnson] Ranger CW chirp

[Jim Brannigan]

> Hi Art,
>
> There is a keying control on the Valiant just like the Ranger, basically 
> you
> adjust it until the oscillator runs with the key open and then back it off
> slightly from that position to where the oscillator stops.  You may remove
> some chirp by better adjustment of this control however:
>
> 1.  If the chirp is only on 40 meters, this is due to RF getting into the
> VFO since it is operating on the same frequency as the final on this band.
> Try tightening the hardware on the VFO case.
>
> 2.  several people have reported that different 6AU6 tubes in the VFO 
> behave
> differently with respect to chirp with the 6AU6WA being the best of all.
> You might try different tubes to improve this.
>
> 3.  Many transmitters of this vintage are likely to have some audible 
> chirp
> on 15 and 10 because of the amount of frequency multiplication to get 
> there;
> any minor chirp will be increased by a factor of 3 or 4 respectively.
> Consider it as personality, something the newer rigs don't have.  Or you 
> can
> buy a lot of xtals from Bry and the chirp will no longer be an issue...
>
> 4.  At least it isn't as bad as the clicks from an unmodified FT-1000MP on
> 160.  I got a couple of nasty emails the first time I operated my 
> FT-1000MP
> in a 160 CW contest, fortunately it was fairly easy to clean up.
>
> 73, Rodger WQ9E
>
>> -----Original Message-----
>> From: johnson-bounces at mailman.qth.net [mailto:johnson-
>> bounces at mailman.qth.net] On Behalf Of Artmouton
>> Sent: Tuesday, February 20, 2007 9:28 PM
>> To: C E; Chuck Hurley; johnson at mailman.qth.net
>> Subject: Re: [Johnson] Ranger CW chirp
>>
>> I have similar problem on a Valiant - is there a similar adjustment?
>> Otherwise it is break it down and clean everything
>> Art K5FNQ
>>
>> ----- Original Message -----
>> From: "C E" <catman351 at yahoo.com>
>> To: "Chuck Hurley" <scorebrd at verizon.net>; <johnson at mailman.qth.net>
>> Sent: Tuesday, February 20, 2007 4:45 PM
>> Subject: Re: [Johnson] Ranger CW chirp
>>
>>
>> Hi Chuck:
>> Adjust the keyer potentiometer on the keyer circuit.
>> Be sure to follow the direction in the manual on how
>> to do this. Cal.
>> --- Chuck Hurley <scorebrd at verizon.net> wrote:
>>
>> > I have a Ranger II that I am getting reports of a
>> > chirp on CW.  Anyone have a suggestion as to where
>> > to start?
>> >
>> > Tnx
>> > Chuck  K1TLI