This MRFE6VP61K25H solid state device is catching on fast in amateur radio
circles. HF Amps next.
http://www.m2inc.com/pdf_manuals/2M-1K2.pdf
Here is the tough time with this, because I'm sure most people take device
manufacturer's data at surface value. All of this stuff, to this point of
Hi Tom,
The new Harris Flexiva 10 KW FM band (not pulse) stereo transmitter is not
having a heat problem with air cooling, in a reasonably small package . It
has individual modules that can be hot switched. Will have more info when we
install it next few weeks. It's going up on a mountain
Info:
Product # HARFAX10KCD
Product description: Harris FAX10CD transmitter
73
Bruce-K1FZ
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UR RST IS ... ... ..9 QSB QSB - hw? BK
On 7/7/2012 1:18 PM, Bruce wrote:
Hi Tom,
The new Harris Flexiva 10 KW FM band (not pulse) stereo transmitter is not
having a heat problem with air cooling, in a reasonably small package . It
The problem with starting with a saturated amplifier and then
backing off the power for linearity
Hi Rick,
Did you notice the 2 meter amplifier that the device is biased for SSB
operation ?
http://www.m2inc.com/pdf_manuals/2M-1K2.pdf
73
Bruce-K1FZ
___
UR RST IS ... ... ..9 QSB QSB - hw? BK
___
UR
Hi Bruce,
The new Harris Flexiva 10 KW FM band (not pulse) stereo transmitter is
not
having a heat problem with air cooling, in a reasonably small package . It
has individual modules that can be hot switched.
I'm sure Harris did a great job. The modules can be swapped while the TX is
on,
As the manual explains, the amplifier has two
modes, linear and non linear. Linear is only
for low duty cycles. It is also worth noting
that a tuned amplifier will in general have
better drain efficiency than a broadband one.
Rick N6RK
On 7/7/2012 6:08 PM, Bruce wrote:
Hi Rick,
Did you
Page 6 states, when the amplifier is in the Single Sideband mode, SSB or CW,
the amplifier is in the linear mode and delivers 1200+ peak to the antenna.
Tuned or unturned, if the toroids or tuned circuits are running hot, then
too much RF is not going to the antenna, a re-think of circuit
Yes, the broadcast 50 ohm load has a very low VSWR.
Harris claims that with the 75 % RF efficiency, and only 25 % heat
generation, it lets them to use air cooling.
Individual new power supply for each module.
Right. My point is people seem to be reading the data sheet for the device,
BEKO in Germany uses them in their 2m amps for about two years.
Last year I was operator at a contest station with 3x HLV-2000 into three
antenna groups.
They worked perfectly at 2KW out for the 24 hours.
The HLV-1000 uses one of those transistors and is upgradeable with a second,
the
On 7/7/2012 11:28 PM, Chortek, Robert L wrote:
Uh, I thought the legal limit was 1.5 KW
Only in the US. Limits vary by country with some as high as 5KW
others as low as 400W.
73,
... Joe, W4TV
On 7/7/2012 11:28 PM, Chortek, Robert L wrote:
Uh, I thought the legal limit was 1.5
On Sat, 2012-07-07 at 23:45 -0400, Joe Subich, W4TV wrote:
On 7/7/2012 11:28 PM, Chortek, Robert L wrote:
Uh, I thought the legal limit was 1.5 KW
Only in the US. Limits vary by country with some as high as 5KW
others as low as 400W.
73,
... Joe, W4TV
And by band. This is a
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