I have a m f j 998 I'm probably going to sell.  I sent it back to m f j 
and it is still in the box after bgetting it back.  I'm not sure what a 
fair price would be.  Any interest?  I'll do some looking around.
73
Butch
WA0VJR
Node 3148
Wallace, ks.


On Sat, 
13 Apr 2013, Kelvin Marsh wrote:

> Hi Don,
>
> Thought I'd bring this back to the list, as others might benefit and
> contribute <smile>.  I think your idea of having between 500W and 1KW is
> good.
>
> There are several solid state amps with auto tuners built in, but I'm not
> sure what aural feedback they would give you.  Personally, I use the MFJ 998
> auto ATU, and I'm very impressed with it.  It can handle 1.5KW, and has
> aural tones to let you know the approximate match, and beeps will guide you
> through using the memory banks.  The menu is not accessible, but since the
> initial setup, I've never needed to use it.  One nice feature is that while
> tuning it opens the PTT line.  If your antenna goes bad during transmission,
> the AATU will start hunting and the amp will be disconnected!  The only
> problem is the cost...
>
> I use all Icom gear, and the PW1 amp automatically changes band, using CIV
> data from the radio.  I understand that several amps can do this, like the
> Yaesu Quadra, and the Expert 1, but the latter may need a PC to manage the
> band changes.
>
> From what I've seen, the Ameritron amps, like the ASL-600, look to be very
> good value, and I guess the lack of an internal tuner is an advantage, on
> the basis that there's no point paying for something you might not use
> <smile>.
>
> ***
> Hi Don,
>
> Your amplifier query is interesting, and a question  a lot of blind ops are
> asking at the moment!  I guess you could help by saying what power output
> you want, your budget, if you will already have a power supply, which bands
> it should cover, and the type of antenna you have.  It would also be useful
> to know if you have an accessible power meter, a QRO ATU and whether you
> want auto band changing.
>
> As Bob has said, although there is no need to manually juggle the tuning
> controls with a solid state amp, it needs either a resonant antenna or a
> capable ATU.
>
> Although the protection circuits should prevent any amp damage, a mismatch
> is likely to either trip the amp or cause it to sharply fold back the power.
>
> I use a fully automatic 1KW solid state amp with internal auto ATU here, but
> I did not get enough aural feedback for my satisfaction <smile>.  I prefer
> to use an external auto ATU that I can use with confidence, and hear exactly
> what is going on.  Especially useful at RF power that can cause serious
> injury or expensive damage!
>
> Best wishes, Kelvin Marsh - M0AID
>
> Working to improve accessibility for radio amateurs with disabilities
>
> www.active-elements.org
>
> For accessibility evaluations of amateur equipment and MP3 manuals
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Don Risavy, Jr.; NR4DR
> Sent: 12 April 2013 23:55
> To: [log in to unmask]
> Subject: Amplifier for H.F
>
> Wondered does anyone happen to have a good recommendation on a amp for h.f
> that's solid state and no tuning involved?
>
>               Thanks.
>
> Cul 73 nr4dr
>
>
>
>
>
>
>
>
>
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