For those that have one or have used one, what does a Palomar 300
Elite put out in honest RMS watts with a tone? There appears to be
two versions of the amplifier . The version I am asking about is the
one with two SD1446 transistors, and not the one with two MRF-455
transistors. I'm reluctant to believe anything a Dosey peak meter
says.
I have been playing with one on the bench and the output is flakey.
One moment the meter says 150 watts on sideband with a tone, and
another minute is says about 80 watts with a tone. The broadband
output transformer gets VERY hot on mine, and that is going in to a
1000 watt oil filled dummy load with 1.1 SWR. One of the legs on the
1000 pf capacitor soldered to the broadband output transformer did not
appeared to be soldered well, so I re-soldered it. The amplifier is
now showing about 80 watts consistently, and the output transformer is
no longer getting so hot. I'm just wondering whether I fixed it or
broke it. The two sd1446 transistors check good when I test them one
leg at a time with a diode checker. I am using an average meter to
measure the output.

-TD

On Sun, 30 Jan 2005 16:06:24 GMT, (Terra
Dactyl) wrote:


For those that have one or have used one, what does a Palomar 300
Elite put out in honest RMS watts with a tone? There appears to be
two versions of the amplifier . The version I am asking about is the
one with two SD1446 transistors, and not the one with two MRF-455
transistors. I'm reluctant to believe anything a Dosey peak meter
says.
I have been playing with one on the bench and the output is flakey.
One moment the meter says 150 watts on sideband with a tone, and
another minute is says about 80 watts with a tone. The broadband
output transformer gets VERY hot on mine, and that is going in to a
1000 watt oil filled dummy load with 1.1 SWR. One of the legs on the
1000 pf capacitor soldered to the broadband output transformer did not
appeared to be soldered well, so I re-soldered it. The amplifier is
now showing about 80 watts consistently, and the output transformer is
no longer getting so hot. I'm just wondering whether I fixed it or
broke it. The two sd1446 transistors check good when I test them one
leg at a time with a diode checker. I am using an average meter to
measure the output.

-TD


http://us.st.com/stonline/books/pdf/docs/2805.pdf

I was gonna say, Power!

or like they say in the south.... Pawr!

lol...

-ME




On Sun, 30 Jan 2005 16:06:24 GMT, (Terra
Dactyl) wrote:

That amp will put out around 250PEP. The output transformer was getting
hot because the output matching was poor. The cap you resoldered is
critical in the output matching network.

Professor
www.telstar-electronics.com


Terra Dactyl wrote:
For those that have one or have used one, what does a Palomar 300
Elite put out in honest RMS watts with a tone? There appears to be
two versions of the amplifier . The version I am asking about is the
one with two SD1446 transistors, and not the one with two MRF-455
transistors. I'm reluctant to believe anything a Dosey peak meter
says.
I have been playing with one on the bench and the output is flakey.
One moment the meter says 150 watts on sideband with a tone, and
another minute is says about 80 watts with a tone. The broadband
output transformer gets VERY hot on mine, and that is going in to a
1000 watt oil filled dummy load with 1.1 SWR. One of the legs on the
1000 pf capacitor soldered to the broadband output transformer did
not
appeared to be soldered well, so I re-soldered it. The amplifier is
now showing about 80 watts consistently, and the output transformer
is
no longer getting so hot. I'm just wondering whether I fixed it or
broke it. The two sd1446 transistors check good when I test them one
leg at a time with a diode checker. I am using an average meter to
measure the output.

-TD

I was gonna say, Power!

or like they say in the south.... Pawr!

lol...

-ME


This amp is illegal for CB. And when Frank comes back you will
get an ass whipping about its lack of RF filetering.

From: (Terra=A0Dactyl)
=A0=A0For those that have one or have used one, what does a Palomar 300
Elite put out in honest RMS watts with a tone? =A0 There appears to be
two versions of the amplifier . The version I am asking about is the one
with two SD1446 transistors, and not the one with two MRF-455
transistors. I'm reluctant to believe anything a Dosey peak meter says.
=A0=A0=A0=A0I have been playing with one on the bench and the output is
flakey. One moment the meter says 150 watts on sideband with a tone, and
another minute is says about 80 watts with a tone. The broadband output
transformer gets VERY hot on mine, and that is going in to a 1000 watt
oil filled dummy load with 1.1 SWR. One of the legs on the 1000 pf
capacitor soldered to the broadband output transformer did not appeared
to be soldered well, so I re-soldered it. The amplifier is now showing
about 80 watts consistently, and the output transformer is no longer
getting so hot. I'm just wondering whether I fixed it or broke it. The
two sd1446 transistors check good when I test them one leg at a time
with a diode checker. I am using an average meter to measure the output.
-TD
_
About 225 PEP. 250 would be pushing it to the MAX.