[Johnson] Ranger CW chirp

[Dave Maples]

Jim: Where do you get the special temp compensated caps?

Dave WB4FUR

-----Original Message-----
From: johnson-bounces at mailman.qth.net
[mailto:johnson-bounces at mailman.qth.net]On Behalf Of Jim Brannigan
Sent: Wednesday, February 21, 2007 10:17 AM
To: johnson at mailman.qth.net; 'Artmouton'; Rodger
Subject: Re: [Johnson] Ranger CW chirp


Whoops, hit the send too soon.....
Also check the silver mica capacitors in the VFO.
I had a drifting/chirp problem in my Ranger that was solved by replacing all
those capacitors.

Jim

>
>> 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

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