[amsat-bb] Re: New Preamp
kq6ea at pacbell.net
Tue Sep 18 16:18:17 PDT 2007
I've never used hamtronics *preamps*, but I've built
some of their other stuff. It seemed to me that the
manuals assumed you'd built things before (not a
problem for me), and they weren't real "user friendly"
like Heathkit or Elecraft.
The pines shouldn't be too much problem at VHF/UHF,
but will kill you on 2.4GHz.
--- Bryant <bryantcw at cox.net> wrote:
> Dave and the BB-
> The thread on antenna preamps has been very
> interesting and helpful to me as I'm in the final
> stages of] putting my satellite station on the air-
> [determining where to mount the antennas at the
> moment]. I checked your reference to Hamtronics
> and they are still in business and do offer a wide
> range of inexpensive preamps. See
> I wonder if anyone else has had any experience with
> these preamps and, if so. what were your
> Also, does anyone know how much affect pine trees
> have on ham satellite communications? There are two
> tall ones within 30 meters of where I'm considering
> mounting my antennas.
> Thanks for all the good ideas that the BB members
> have shared over the years.
> Bryant, W2RGG/6,
> AMSAT member # 25030
> Original Message -----
> From: Dave Guimont
> To: Jim Jerzycke
> Cc: amsat-bb at amsat.org
> Sent: Monday, September 17, 2007 10:53 PM
> Subject: [amsat-bb] Re: New Preamp
> At 09:25 PM 9/17/2007, you wrote:
> >Welcome to the wonderful world of mast-mounted
> >preamps! 90% of the people who get involved with
> >satellites (INCLUDING myself) think they don't
> >a preamp. After doing all you can (better
> >lower loss feedline, etc) to get your receive
> >maxed out, you finally decide to "just try one; I
> >always sell it on eBay", and are usually amazed
> at the
> >improvement it gives you.
> >The _first_ thing I suggest to newcomers is to
> buy a
> >good preamp. Sadly, most are like I was, and
> >around for weeks or months worrying about other
> >before finally buying one.
> >Congrats, and enjoy your preamp!
> >73, Jim KQ6EA
> Right on the nose, Jim, and they don't have to be
> either,....the ones I use are from HAMTRONICS
> (assume they are still
> in business). they are at least 20 years old,
> built from a kit, and
> mounted in a wx proof box at the antenna, still
> functioning 100% and
> as I remember about 18 bucks at the time. They
> outdid others on a
> side by side coax switched test, and needless to
> say the owner of the
> "big time charlie"was not too happy!! Hamtronics
> has pre-built for a
> few bucks more, or did at that time...Use them,
> and hang just about
> any kind of antenna on for what we have flying
> now....One made from
> coat hangers would work just fine...And I've said
> this before.....low
> loss coax, and prime connectors properly attached.
> I see the "antenna discussers" on here having the
> time of their life,
> and more power to them, probably on of the most
> fun parts of ham
> radio for some of us, but don't forget to include
> and calculate LOSES
> in the entire system. Your most magic antenna can
> go down the tubes with them.
> 73, Dave wb6llo at amsat.org
> Disagree: I learn....
> Pulling for P3E...
> Sent via AMSAT-BB at amsat.org. Opinions expressed
> are those of the author.
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