Hi.
I don't know how the 100 watt amplifiers fare, but I had a lot of trouble
with parasitics that kept popping the output transistor on my old Mirage
B23 amplifier, and at the price of Motorola MRF240 transistors, that got
expensive in a hurry. I never could get that amp tamed down. It is the
only one of the Mirage amps that I had a problem with, though.
zI also liked the RF Concepts amps that Kantronics had. I'm not sure that
they are still around, but the preamp was somewhat nicer than the preamps
in the Mirage amps. I can't reall contribute much on the tube amps--I
never had one.
However, my question to Rick would be "Are you looking for the antenna for
SSB or FM?" If SSB, you probably want to look at something more like a
halo (or the square version cqalled the Squalo), or a Turnstile antenna, or
perhaps the Eggbeater antenna (also known as the Texas Potato
Masher). Most of these antennas can be built, or you can probably find
commercial versions of at least some of them if you look around. What
these antennas do is give you an omni-directional antenna with horizontal
polarization. You'll want horizontal polarization for SSB.
If FM is your thing, take a look at some of the Jetstream antennas--they
give good gain, and they are less expensive than some of the big names, and
people that I've talked to seem to like them. Just one word of
caution: If you start playing with the really big amps, watch the power
ratings on your antennas. Most of the commercially made verticals have a
maximum power limit of between 120 watts and 200 watts depending upon the
manufacturer and model.
73, de Lou K2LKK
At 12:36 PM 3/31/2008 -0400, you wrote:
>You don't need to solder to make a 2 meter dipole or any other for that
>matter, in fact, the cobra ultralite, which is an HF dipole, mine anyway, is
>not soldered anywhere. Mirage amps are made by MFJ now, that might explain
>that problem though I'd suspect your SWR. You should check that. With a
>decent antenna, 2 meter SSB, 25 watts will be all you need. I have no clue
>on what 2 meter amps are good, I used to have a mirage I ran on an HT, but
>that was big $$$ and based on what I do with that and do on the TS-2000, it
>was a complete waste of money, I never run much power on 2 meters now though
>that's not my band of choice anyway.
>----- Original Message -----
>From: "Rick" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Monday, March 31, 2008 12:19 PM
>Subject: Re: Amplifiers
>
>
> > Hi list.
> > I am looking for a good 2 meter amp.
> > Something I can put on my Kenwood TS-711A for SSB.
> > I have a feeling I won't be happy with 25 watts even when I get my beam
> > put
> > up.
> > I am looking for something new not used.
> > I would prefer something with variable power and a pre-amp built into it.
> > It doesn't matter if it is solid state or tube, but I prefer tube.
> > I have a 100 watt mirage amp for my HT And I'm not impressed with it it's
> > supposed to be able to handle 2 watts input, but it keeps blowing the
> > output
> > transisters.
> > Also is there any place I can buy a 2 meter di-pole?
> > I don't know anybody that can do the soldering for me.
> > Thanks for any advice and 73.
> >
> > KB#GOS
> >
>
>
>
>
>--
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>10:13 AM
Louis Kim Kline
A.R.S. K2LKK
Home e-mail: [log in to unmask]
Work e-mail: [log in to unmask]
Work Telephone: (585) 697-5740
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