TR-7, HW-7, and HW-8 MODIFICATIONS 

 Publication

 Reference Article
 Board Price

PA1HFO

TR-7 DRAKE RENEWED MODIFICATIONS 4 BOARD SET

$35

ARRL QRP CLASSICS

IMPROVING THE HW-9 TRANSCEIVER (QST 4/88) SWR BOARD

$3.50

ARRL QRP CLASSICS

IMPROVING THE HW-9 TRANSCEIVER (QST 4/88) AUDIO THUMP SUPRESSOR BD

$3.50

COMM. QUARTERLY Summer92

TR-7 MODIFICATIONS (4 BOARD SET)

$17.50

HR Aug87

BETTER FREQUENCY STABILITY FOR DRAKE TR7

$8.00

QST Jul82

WARC AND LF ON THE TR-7

$6.00

QST Jan74

HW7 QRP MODS TWO BOARD SET BY W1FB

$11.00