Here I use my ICOM 706 model MK2 without any
modification, for transmitting on 472 and 137 bands.
On MF it is very important to set the power level to « L
» that is the minimum power in the menu. The output power on 50 ohms is about
1.5 Watt. Good signal shape, enough stability for WSPR and all other usual
modes, even QRSS 60. I use an external LPF home made.
On LF it is also working nice, but the output power is
only about 5 dBm… You need some power extra gain for good results HI
Best 73 de Andy F6CNI.
Sent: Thursday, September 28, 2017 11:21 PM
Subject: LF: ICOM IC706
Can all versions of the ICOM IC-706 be
opened up to TX & RX on 475kHz?