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President Lincoln adjust RF Power on USB

Denmark

Member
Oct 10, 2008
34
2
18
Denmark
Hey guy'z..I have a President Lincoln and i cant adjust the RF Power on SSB/USB/LSB only on AM/FM is that true???Because IF i install a AMP i should be able to turn down the power so i dont BLOW the AMP??? I have been away from CB for 17Years and my memori on this point is not very good..

I'll install a Zetagi B300P and if the INPUT is more then 10WATT i'll blow it up

I could really use some advise..

GRT's Denmark
 

So i need to OPEN up to adjust it from the inside then,I thougth i could do it from the RF-POWER knot in the front of the Radio...Hmz if thats the case were can i find the layout so i can track down the location of the VR104..??

Thanx alot sofare for your help
 
Yep, that's it. The RF Power only adjusts AM/FM on that radio. It does seem like a waste to turn the SSB down so much just to drive that amp. I think I would either use a different radio with that amp or a different amp with the Lincoln.
 
Ah okay i only have that Radio so buying a othere one it not a option for me...Can y recommand a AMP there can handle 20 to 21WATT?? It to be able to run on a Car Batteri..Names Links ect is very much welcome..
 
european AMP

Since you are in Denmark I would suggest looking for a new Amp made by RM Italy. They have a pretty big selection of models to choose from.
www.rmitaly.com
They don't sell anything that is FCC certified from what I can tell. I am not familiar with EU regulations or Danish laws. If you can get a Texas Star in Europe they have always been a little better made especially the older ones.
Another company in Bulgaria is gaining popularity in amateur radio with an affordable line of AMPs. They are Called Acom. Acom Web Site

All depends what you are looking for and the price.
Hope this helps.
Tom
 
If your president lincoln is set for 20w pep on ssb then it will not be anywhere near that whilst talking,the zetagi b300p will handle that input easily as long as you don't start whistling through it and pushing the radio to its max.only thing i will say is don't put the b300p past level 5 as the fuses will almost definately blow at that input level,best compromise is using it on level 4 at that input level where it will run all day long with no problems,

i ran that exact setup every night for 6 months solid and the only time it blew a fuse was when my mate turned it to level 6 to see what would happen despite me telling him not too.fortuneately for him i always carry spare fuses for amps.the b300p has 2x10 amp fast/quickblow 20mm fuses internally.

before going to level 4 i would always give a few short keyups on level 2 on fm mode to preheat the transistors before putting it onto ssb and level 4.worked very well for us coupled with a sirio hp4000 mobile antenna,we were easily doing north and south america,carribean,anywhere in europe,asia,s.africa all with very good signal reports and excellent audio reports.

the biggest mistake most people make with a b300p is trying to screw the manufacturers specified output from them by increasing input power,it just won't do it and you'll melt the input attenuator circuit board.if it does 140w on level 4 be happy at that,its plenty to get you round the world even on a mobile antenna.

one thing you can do to improve the b300p is increase the size of the dc power leads by soldering heavier ones straight to the board,it will lessen voltage drop.the ones supplied on it are borderline.

rm italy amps show slightly more power but are dirtier than the b300p,if you add a filter to the rm amp then it will do roughly the same as a zetagi which tells you all the extra power on your meter is from harmonics or happy watts as we call them in the uk,make the user happy as he sees more power on his power meter but everyone in the vicinity very unhappy from splatter and rfi.
 

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