[AMRadio] Are we doomed?

[Rob Atkinson]

Hi Jim; I don't want to get into an argument as I am certain you speak
of honest experience.  However, like many folks in continuous duty
modes, you left out one key bit of information:  transmission time.
If you have no trouble with the tuner after a 30 minute transmission
then I stand corrected.  But I have a hunch you'll see impedance match
creep at about the 15 minute mark if not sooner at 350 watts carrier.

73
Rob
K5UJ

On Sat, Apr 25, 2020 at 2:08 PM <w5jo at brightok.net> wrote:
>
> Charlie and group,
>
> I bought an MFJ 998RT about 8 years back and installed it at the base of my
> tower.  It is hooked to my coax which is then routed to an antenna switch
> then to a Inverted L for 160 and 60 meters and my common 80/40 meter
> dipoles.
>
> I use it with my GK 500 and my AL 1200 both without a bit of trouble across
> the bands and it tunes fine.   It has withstood the test of time and
> survived numerous thunderstorms without damage but occasionally the memory
> scrambles so have to reprogram the frequency memory by transmitting into it.
> I have not had one problem with it using the GK 500 which puts about 350 or
> so watts to the unit and it modulates to 1200 to 1500 watts on 3.870-90
> meters where my antenna is cut for 3.750.
>
> I have no trouble recommending it.  Their stuff is better built today than
> in years past but if you friend is interested I would suggest it for any
> level below 300-400 watts AM carrier.  I don 't have any experience with the
> smaller units so can't speak to them.
>
> Jim
> W5JO
>