There
is a way of extending the TX frequency range of the FT-450 transceiver. The so
called “MARS” (“Military Affiliate Radio System”) modification provides
out-of-the band operation of the transceiver. You can operate anywhere within
the range 1.8-40 MHz after the transceiver has been modified.
The
modification is simple. Just remove jumper JP4002 on the control pcb and make
some settings. A description of the mod can be found here:
http://www.santerweb.net/wp-content/uploads/2013/01/MARS-Mod-for-FT-450.pdf
YouTube shows the instructions as well. For example this one for the FT-450D:
https://www.youtube.com/watch?v=u8kqyekwPxc
Example
of out-of-band operation:
Jumper
to be removed:
It
took me some courage to open the transceiver and do the mod, but in fact it
turned out to be rather simple.
