Better yet, a Bird 8890. 2,500 Watts CCS.
Max SWR 1.25 to 2 GHz.
Snagged one of the auction site a few years
ago for short money.
73, Dick, W1KSZ
On Tue, Feb 23, 2021 at 1:31 PM Bob Darlington <rdarlington@gmail.com>
wrote:
> Guys, c'mon. Bird 8201. $200 used, 500W continuous forever, 5kW short
> term. Air cooled, oil (mineral) filled, parts available, QC connectors
> like on our Model 43 meters, 1.25:1 max out to 2.5GHz, and it'll outlive
> all of us. Sure, I can make mine slightly warm to the touch txing RTTY at
> the legal limit into it, but otherwise it stays cold to the touch doing
> anything else.
>
> -Bob N3XKB
>
> On Sun, Feb 21, 2021 at 1:46 PM MU 4CX250B <4cx250b@miamioh.edu> wrote:
>
> > My instinct is that mineral oil would be a better coolant than
> > distilled water, with no corrosion issues. You can buy it at any
> > pharmacy, and while it isn’t rated at quite as high a temperature as
> > transformer oil, it works quite well. I used it in a Cantenna for 30
> > years! As I recall, it was recommended byHeathkit as a substitute for
> > transformer oil.
> > 73,
> > Jim w8zr
> >
> > Sent from my iPhone
> >
> > > On Feb 21, 2021, at 1:35 PM, Geert Jan de Groot <pe1hzg@xs4all.nl>
> > wrote:
> > >
> > >
> > >> Is it possible to use distilled water in a hb dummy load ?
> > >> DL consist of 4 x 200 ohm globars, wired in parallel..in an 8
> gallon
> > container.
> > >> I welded 4 x 3 inch OD thick wall Alum pipes together, 2 stacked
> > above 2.
> > >> One resistor resides dead center in each alum pipe. Each resistor
> is
> > a
> > >> new globar type SP, 12 inches long x 1 inch in diameter.
> > >
> > > Personally, I'm using the Ameritron ADL2500, which is 4 hefty resistors
> > in a case with a fan. I modified it so it automatically switches the fab
> to
> > reduce the noise.
> > >
> > > No leakage, no corrosion, no mess if I drop it or I kick it. Much
> > lighter. No dangerous oils, and my shack doesn't smell like a chip shop
> > when I'm doing some testing.
> > >
> > > 73, Geert Jan PE1HZG
> > >
> > >
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> >
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