
December 4th 06, 10:15 AM
posted to aus.radio.amateur.misc,aus.radio.cb,aus.radio.scanner,rec.radio.amateur.equipment
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First recorded activity by RadioBanter: Dec 2006
Posts: 7
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Any Motorola techs in here?
"atec 77" "atec77 wrote in message
...
Warren NoSpam- wrote:
Hello Jasco , I'm going to do something I don't do very often and that
is
apologise for jumping to conclusions, I must admit when I read your
original posting I thought, here we go again, some UHf CBer wanting info
on a very high powered Amp, so he can stomp on every one else, for that
I
do apologise, in my role as an emergency monitor I get quite a few of
the
power heads deliberately interfering with the emergency repeaters which
I
monitor daily, I have even had dead set deliberate interference during
actual emergency calls and whilst in contact with the Police Comms
Centre,
as in, microphone in one hand and the phone in the other, the Police
couldn't believe what they heard, so I tend to get a bit touchy when it
comes to very high power on UHf CB.
now back to the Amp, I see on the circuit board there is JAS marked in
several places, I'm wondering if this is the manufactures
identification,
if so you might get some info from this mob,
Jas Commerical Printers
Products : Printed circuit boards
Address : 38, Bombay Talkies Compound,, Somwari Bazar, N. B. Road, Malad
West,,Mumbai-400064.Maharashtra.
Send : On-Line Trade Inquiry
http://www.easy2source.com/directory..._id=0&Len t=3
I ran a search on the net and came up with that mob, with a bit of luck
they may be the manufactures and should have the info you require,
wether
the buggers will give the info is another thing , once again sorry for
****ing you off,
Cheers,
Warren
Jasco,
Maybe here, more info on MSF5000 if you already haven't got
this
link ,
http://www.repeater-builder.com/moto.../msf-tour.html .
The following info has nothing to do with Motorola , but I recently
purchased a Philips 828 back end (25 Watt PA from 828 radio) which has
been
modded so as to run a hand held 2 Mtr , there was no info available with
it
regarding input power, and me being a silly bugger didn't think to ask
the
bloke I bought it from :-) ( Hamfest ), so at first I set the h/h to 5 W
max, the amp output was 25W, then I set the radio to low power, 0.5 W ,
the
output was then 20 W, so I came to the conclusion to run it at low power
0.5
W, as that would most probably be the safe input power, 5 W input only
raised the output by around 5 W not worth potentially blowing the driver
or
something major, unless of course the driver had been changed to a more
robust type ?, in your case, maybe try at 1W then say 3W and see what the
output difference is , if it's only 5 or 10 W on higher input power of 3
W
its probably safe to run it at 1 W input,
Cheers,
Warren
You are correct , I have made the conversion on several 828 PA with a
resistive network , latest is an 828 lowband vhf on 6 ,eters with 1 watt
in give 24 watts out , actual drive is about .55 watts via the resisters .
Hello atec77, thanks for the verification, much appreciated, I really should
have thought to ask the fellow I bought it from at the Gold Coast Hamfest,
but it didn't occur to me at the time, I really went down to buy some
N-Connectors as they have had them before, mixed types secondhand in a
plastic bag for around $15 , wouldn't you know it, there wasn't any there
haha, ah well, ya get that :-) ,
Cheers,
Warren
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