A question on tube rigs in general, Kenwood in particular
 

All I can say is if you follow those directions, Good Luck.

--

Clif Holland KA5IPF
www.avvid.com




"billcalley" wrote in message
oups.com...
On Apr 15, 3:44 pm, Chuck Harris wrote:
billcalley wrote:
Thanks for the tip! So that I don't FUBAR this up, please tell me if
I have this right (changed from your original description to take
advantage of my very limited equipment):

1. Set the MODE to CW and the IF-SHIFT to center detent position of
the TS-530S.
2. Find the single trimmer capacitor located near the 500Hz CW filter
(the trimmer capacitor will be able to shift the 500Hz CW filter
center frequency by some small amount).

You can't shift the CW filter, so you must shift the xtal oscillator
that provides the BFO injection signal for the CW mode.

3. View the TS-530S's audio speaker output noise on my audio spectrum
analyzer.
4. Adjust the TS-530S's trimmer capacitor until the audio (mainly
noise) output is -centered- on 800 Hz, according to the audio spectrum
analyzer's screen.

That is correct, you must adjust the xtal BFO trimmer so that the IF
noise
shows up centered on the desired CW note frequency.

-Chuck


Cool -- thanks Chuck!

73,

-Bill

A question on tube rigs in general, Kenwood in particular
 

Clif Holland wrote:
All I can say is if you follow those directions, Good Luck.


Very well, please explain the correct method.

-Chuck

A question on tube rigs in general, Kenwood in particular
 

In article om,
"billcalley" wrote:

2. Find the single trimmer capacitor located near the 500Hz CW filter
(the trimmer capacitor will be able to shift the 500Hz CW filter
center frequency by some small amount).

Bill-

You may be able to accomplish your goal without a counter, but the
trimmer you need to adjust is one of a group of three next to three
crystals on the carrier unit. It is probably not on the filter board
unless the two boards are combined in the TS-530.

I don't know for sure if the TS-520 manual is applicable. Although it
shows the crystals and trimmers in a photo and on the circuit diagram, I
couldn't find a procedure for their adjustment. It would help if you
could find a copy of the TS-530 service manual.

Fred
K4DII

A question on tube rigs in general, Kenwood in particular
 

The 520 and 530 are about as close as an elephant and a donkey.... About the
only thing they have in common is tubes finals and the brand.

--

Clif Holland KA5IPF
www.avvid.com




"Fred McKenzie" wrote in message
...
In article om,
"billcalley" wrote:

2. Find the single trimmer capacitor located near the 500Hz CW filter
(the trimmer capacitor will be able to shift the 500Hz CW filter
center frequency by some small amount).

Bill-

You may be able to accomplish your goal without a counter, but the
trimmer you need to adjust is one of a group of three next to three
crystals on the carrier unit. It is probably not on the filter board
unless the two boards are combined in the TS-530.

I don't know for sure if the TS-520 manual is applicable. Although it
shows the crystals and trimmers in a photo and on the circuit diagram, I
couldn't find a procedure for their adjustment. It would help if you
could find a copy of the TS-530 service manual.

Fred
K4DII