Not sure about your model, but on the 300P's, the pre-amp is one whenever the amp is on. It's the biggest flaw of the amp, but modable to add a on/off swith for the pre-amp or to disable alltogther, which is what I did.
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RM Italy 203p amp
- Thread starter ROADTRAIN
- Start date
Not sure about your model, but on the 300P's, the pre-amp is one whenever the amp is on. It's the biggest flaw of the amp, but modable to add a on/off swith for the pre-amp or to disable alltogther, which is what I did.
203P
I had someone to email me and he told me his 203P did the very same thing. He said he do everything he could think of to get it to work and nothing helped.
I had someone to email me and he told me his 203P did the very same thing. He said he do everything he could think of to get it to work and nothing helped.
I have been using a RM-203p for 4 years now and its working great, I only drive with 2 1/2 watts at 13 volts and swings to about 100 on the Dosy.
I had to sell my RM 203-p and now my friend is mad at me thinking that I tried to rip off. My pre amp on this is working well. But no output power at all, I have read everything on this forum and I think everyone is have the same problem (there are removable jumpers on this amp. Could someone help help me out with a schematic on this I can try to figure it out...73's and thanks.
John-861 Va.
John-861 Va.
Here is the latest version I have, from 2005. Didn't look to see how the earlier versions are different.
This is NOT the "P" version with the preamp. Don't have that one.
73
This is NOT the "P" version with the preamp. Don't have that one.
73
Same as the AD203 add-in board and 4w as mentioned years ago in the OP is absolutely too much carrier into that amp/board.
Wish they’d sell the P version like the AD203, some guys would like that and it’d be another piece to fix when they blow it ATH in a few weeks.
Wish they’d sell the P version like the AD203, some guys would like that and it’d be another piece to fix when they blow it ATH in a few weeks.
I’m running one daily behind a 980ssb at about a 2 watt dead key swinging to about 10 Watts and I’m seeing about 90 Watts on a bird meter on the bench at 14 volts.. if your wanting more power get a bigger amp because over driving this amp will burn it up fast. I originally hooked this to the stock radio at 4 Watts dead key and it got hot fast and only showed a 115 watt output!
Did the amp work fine when you ran it? If so then it was converted correctly (jumper moved to correct slot). If it did work properly for you then either he hooked it up wrong, has a bad jumper, or the amp has developed a problem. I would bench test it again on your known working station.
The AD203 is different than the KL203. If you look at the schematic of the two in comparison , it will be obvious that there is a difference in the two little amplifiers. I have both and have physically compared the two. The Kl203 is just a little more sophisticated in its design.
I run a four Watt dead key into mine swinging to 16 with crazy modulation from a power mic, and that amp screams. I am cooling it off an A/C vent, so maybe I'm extending it's life, but a while ago I took my rig into my local CB shop to give me an assessment on my setup, and he said the amp loves a 4 Watt dead key.
S&W357
$upporting Member KO4RJD....WDX-556
I have a Workman SWR and Watt meter the cheap ones that are like 40 bucks when I dead key it it reads for Watts but when I talk and do it it doesn't swing up to higher wattage do them SWR meters act like that or am I looking at a totally different watt meter that I should be using to look at the swing