[Yaesu] mp amp keying?

[Scott Manthe]

I use an Ameritron ARB-704 amp interface. It costs less than shipping 
the FT-1000MP in for service, which is pretty cheap protection for any 
number of amp/radio interfacing problems. Not nearly as sexy as the band 
data jack, but I don't worry about popping any transistors or getting 
sticky relays.

Scott, N9AA


 K1TTT wrote:
> I have had several mp's develop sticky amp keying relays.  This is now my
> most common reason to have them serviced and would like to avoid this if
> possible.  I see the band data jack has a tx ground through a 2n3444
> transistor which is rated at  60v and 1a, with my hf-2500 amps and a small
> relay that locks out the antenna switching I measure either 12v or 20v at
> about 75ma, so it seems that transistor should be more than enough.  Does
> anyone use that band data output for amp keying?
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://www.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.ne
>