MARS mod for FT-450
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.
Good afternoon Ron, it sure is an odd feeling to bring a soldering Iron so close to your rig! I can remember doing the same thing with my K3 and not sure what the out come would be but as with you all turned out ok.
ReplyDelete73
Mike
OK Mike,
ReplyDeleteYes quite a relief when all works as before after first power on :-)
73 Ron
Can you use the DATA modes across the bands after the mod?
ReplyDeleteHello i did this mod, now i can not switch from Type-a, to type-t
ReplyDeleteI purchased my FT 450AT sometime around 2008. At that time seems as though I removed the front panel and clipped a blue wire. Am I talking about some other radio of was this a another way back at that time?
ReplyDeleteThanks, Bob, N0DAN
I do not remember the blue wire Bob. Probably another transceiver. 73 Ron
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