PK1-L


RADIATED NOISE FROM A PK1-L CAN BE SEVERE. BYPASS ALL ACTIVE LEADS
ON EACH DB 25 CONNECTOR WITH .001 MFD. CAP'S (MINIATURE CERAMIC PLATE TYPE).

THE OTHER THING TO DO IS THIS:

PUT A WIRE BOND FROM THE MOUNTING SCREW OF EACH DB-25 CONNECTOR THRU
THE HOLE IN THE CIRCUIT BD. AND SOLDER TO THE GND. BUSS AT THAT HOLE.
THAT IS 4 GND. STRAPS.    THE BACK PLANE MAY NOT BE MAKING
CONTACT WITH THE GND. BUSS ON THE BD. AND WILL RADIATE NOISE.

WE HAD SEVER NOISE AT VE3KSR-0 DIGI AND IT WAS CAUSING SEVERE
DESENSE AT VE3KSR REPEATER ON 146.370 INPUT.

AS EXTRA INSURANCE YOU CAN ALSO PUT A BONDING WIRE FROM PIN 1
OF YOUR DB25F PLUG TO THE SHELL OF THE PLUG.

73 JOHN VE3AMZ @ VE3EUK P.B.B.S.  KITCHENER.