[Kenwood] 530S, transmit mixer

[Stephen Goldberg]

Roger,

To peak the transmitter driver, first hook up dummy load to antenna
connector and set the screen grid switch on the back of the 530 to off.  Set
the drive control to the center.  Set the band switch to the desired band.
Set the meter to ALC.  Set mode switch to CW or tune.  Tune to the frequency
indicated for that band in the table on page 25.  Set the Send-Receive
switch to Send and adjust the slug in the correct coil for that band
(L23-L31) for maximum ALC indication on the meter.  Do this for each band.
The correct coil set is the one just to the right of the 12BY7 driver tube
at the back of the RF board and just in front of the final tube compartment
indicated in the diagram on page 25 with the words DRIVE coil.  The other
coil sets are for the receiver antenna and mixer which you indicate works
OK, so don't touch those.

Hopes this helps.

Steve W4IMF

----- Original Message -----
From: <rogpost@attglobal.net>
To: <kenwood@mailman.qth.net>
Sent: Tuesday, January 08, 2002 10:00 PM
Subject: Re: [Kenwood] 530S, transmit mixer


> Steve,
>     You missed to the point that the problem only when the rig is in the
> transmit operation mode.  Receive signals are still peaked with the Drive
contol
> in the 12- oclock position as directed by the aligment proceedure on page
26 of
> the OP manual.
>     A signal was peaked at TP4 with a mkr signal source and RF frequency
> measured on 20M.  The 530S was then placed in the transmit mode and the RF
> signal at TP4 was peaked as much as was possible and  frequency measured.
The
> RF frequency was the same as in receive mode but the drive control had to
be
> rotated  to the full clockwise position.  This still was not even full
output
> measured into a dummy load.
>
> 73,
> Roger Posthumus
>