By Walter Cates WD0GOF (UPDATE 10/30/2013)
16
2-2. KEY CLICK MOD
Key click modification instructions
The following procedures outline the modifications necessary to remove
the transmitter “click” from the SR-150 Transceiver, when switching from transmit to
receive.
1.
Remove white/green wire from terminal 4 of terminal strip near tubes V1
and V7. (Junction of R1, 1 Meg and C10, .005 uf)
2.
Replace capacitor C10 (.005 uf) with a .02uf disc capacitor. (Connected
between terminals 4 and 5 of terminal strip.)
3.
Add a .02 uf disc capacitor between terminals 4 and 6 of terminal strip.
This will be designated C180
4.
Add a 220K ohm, ½ watt resistor between terminals 3 and 4 of terminal
strip. This will be designated R163
5.
Replace capacitor C37 (.005 uf) with a .02 uf disc capacitor. (Located at 6
MHz IF can, T2
Summary of Contents for SR-150
Page 18: ...By Walter Cates WD0GOF UPDATE 10 30 2013 18...
Page 19: ...By Walter Cates WD0GOF UPDATE 10 30 2013 19 BEFORE CLEANING CLEAN CHASSIS...
Page 20: ...By Walter Cates WD0GOF UPDATE 10 30 2013 20 3 1 2 TUBE SOCKET CLEANING KIT...
Page 21: ...By Walter Cates WD0GOF UPDATE 10 30 2013 21 3 1 3 AIR VARIABLE CLEANING...
Page 30: ...By Walter Cates WD0GOF UPDATE 10 30 2013 30 3 5 5 K3 WIRING AND PIN OUT...
Page 38: ...By Walter Cates WD0GOF UPDATE 10 30 2013 38 4 DATA SHEETS...
