I drive mine with 41/2 watts rms and have for years. I deadkey 110 watts swing to 150. Yes I have mosfet final. I've talked skip to California and I'm in Milwaukee. Thus us in a mobile with a K40 Plus trucker antenna. Without skip I get about 28 miles mobile to a basestation. 21 miles mobile to mobile. My radio has been tuned correctly and SWR IS 1.15. GREAT VIDEO.
In the 90's I was a big Yaesu fan and I had that same YS-60 meter - wish I'd kept it but I sold it for some unknown reason. Having those red AVG and PEP led indicators made it easy to see which mode it was in. I now have a Diamond SX-200 and it's a good meter but can be difficult seeing which mode it's in because the AVG/PEP selection is just a simple in/out button. Your YS-60 looks like it has LED backlighting.
2Bit+ A -Cheap- (value) pyramid psv-300 30 amp switching supply with a Tsunami 10 farad competition capacitor sitting on top(stole it outta my truck lol). Gives my value power supply brute storage. And a handy little digital volt meter. The fan hasn't even turned on on my power supply running my RM203p. Love it. On Half Watt dead key swinging ten, I can talk all day on 1.0:1 antenna match and you can barely tell it's even luke warm LOL. Yet it works out in SSB land trust me. Great little amp running ultraflex TimesMicrowave 400 series straight into an RM 27/586 low pass filter. Yep.
Hi,what was the actual fault and cure? Have one here on bench,replaced the PA transistor ,but still no output,wondering if maybe relay contact? check around PCB cannot see any burnt or bulging parts to suggest burnt out components,bit stuck?
I have the amplifier 203P and use it with mc kenley president uses new and amplifier that gives surprise my recommendation is that if you have an antenna used to hold whatts since the first antenna I melted the plastic
Funny hearing all the DX on his radio but this video is from 2015 when the cycle was still high. Four years later (2019) we're pretty much at the bottom of the cycle and the 10-11-12 meter bands are DEAD. Local traffic is about the only activity until the cycle begins to increase again. I hate it when it bottoms out like this because if you don't have any local people on the air then you can just put your radio away until things improve :>\
So I just ordered one of these amps. I popped open my President Washington to prep it for the amp. I turned down my AM power to 1 watt on the avg scale. Now my radio doesn’t seem to swing more than a 1-1.5 watts on am. Will that be enough? I read on another page guys were setting a dead key to 2 and swinging to 25. But I’m not sure if that was pep. Thanks for taking a minute to help!
I would wait and see what it does with the radio itself. General rule of thumb is 1/4th dead key of potential swing. These amps at best are 80 to 100 watts AM. Which is plenty in the big scope of things. So if the amp and radio seem to do about 80 PEP watts max, set the dead key with the amp on at 20. Dead key 20 swinging to 80. If the amp seems to do 100 then try to get close to 25 watt dead key. Perfect case scenario would be to have it all set up with a scope and see where they play together the best. Just be aware that anyone close to you will hear the bleed over with the amp on. Hope this helps.
These are NOT bad amplifiers at all. Run them with 2 to 3 watts on am and about 12 to 15 on SSB and it'll last a long time.. These guys try to run them with dual final radios and blow them up. They are made for your garden variety standard output CB radios..
My brother has a RMItaly 35KL sound issue, Also it makes a machine gun sound when I talk to him on my CB. We are 20 feet away if not more, No more than 200 feet. I just bought the SR-A10 and I am running a DF3000 RF limiter. My brother has a 2.5 amp power supply on his CB could that be the issue?
Why are you so close together? It sounds like you are tripping his COR relay from your proximity. Get some distance between each other and cut the amps OFF.
From the factory the president Bill is probably only doing 2.5 watts ( if measured on an accurate meter) you can adjust the power as there is a hidden service menu, it shows you on here. Check out uk cb radio servicing
how do you rate it against the older uniden boarded radios from the seventies and eighties? do you think ranger radios as bad as people make out or is it just a myth? the reason I'm asking is I've been running a superstar 3900 since 2007 with the ranger EPT360014B chassis and I think it's a great little radio but the only downside was the frequency stability on ssb was not as good as a uniden but have since had the radio sent over to a guy in Austria (Gerhard maurer) who modified the radio and it's now rock solid on ssb.
I agree. Mine does a little over 100w with a 25w DK at 2.5w from the radio. But SSB is also 100w. Not even close to the 200w claim from RM. In all it’s a nice little inexpensive amp if not overdriven.
@@rallypoint1 In watching this video again it's even worse than I thought. Look at the power range switch on the Yaesu watt meter. Looks like the 20 watt position But he is reading the 200 watt scale. What I am seeing is about 10 watts output AM or SSB on that meter
Jersey John I went back after you and checked as well. I froze the shot of the Yaesu and it seems as if it is on the 200w scale. If you look at the function and power right next to it they are up. Basically against the chassis. So if it was the 20w scale it would be further down. I think it’s the angle. Good eye!!
@@rallypoint1 Look at 02:37 They are all 3 position switches. The Range switch is in the down position which is 20 watt scale. If it was in the 200 watt scale position it would be pointed straight out but it's slanted down.
I used to have a midland HF 747 amp and it had delay on response and meant I missed some conversation does this amp do this also or is it fixable, also I just got a ML 145 Magmount antenna in your opinion with this be capable for dx would appreciate your reply please
All amps with SSB switching usually have a small delay. The 200p has a SSB delay built in. It sounds like your older one might have a longer delay or you might have been using the radio in SSB and the amp in AM mode. All amps will act a little different according to how they are built. And I’m not familiar with that antenna. Just see what the power rating is of the antenna and try not to exceed that amount.
@OIF/OEF-0341 Cobra 29 unpeaked should push about 3.5 watts. This drive level shouldn't be excessive for the amp. I've known guys detune their radios to 2.5 to 3 watts just to be safe.
+Travis Fletcher I just got one from ebay from a US seller-He accepted a $65 offer...www.ebay.com/itm/KL-200-P-Mobile-Linear-Amplifier-by-R-M-Italy-W-WARRANTY-/231796609156?hash=item35f8279084:g:I9cAAOSwv0tVL7m4
@@paganphil100 Just because it can doesn’t mean you should. I run mine at 1.5w and it gets kinda warm. I did run it at 3w on another radio and it would get really warm fast. They are super low drive amps. If anything throw a fan on it. Just my experience with it. 73’s!
Four watts should be ok for the 200P. It uses a bipolar transistor (pill). If you have a KL203 (or larger) MOSFET amp, 4 watts is almost too hot... I'd recommend detuning the radio to about 2.0 -2.5 watts out. The RM MOSFET amps don't like over-drive conditions. Aside from non-linearity, the amp might just give you a ghost.
YWHIC1 Hey, I got mine from H&Y but it's been about 2 years ago or better now. They also have a store on eBay. Might use that just in case they don't ship then you got some back up from eBay. They aren't fancy but for the money they can make an everyday radio stand out a little bit.
Peter Brown those are 35 amp. You don't really need them that big, that's just what I had. They interchange between 15 to 45 amp. The plastic housing is the same size, just the metal contacts are smaller.
kb4not thanks. I just got mine this morning. Cable way too short. After watching your vid I guess it can be lengthened? I'm also bit lost with middle button. Is down position poet up ?
Peter Brown also the power button and pre amp button -- down is off and up is on for both or either. You can use the pre amp without turning the amp power button on. Notice the light color change
how tell your kl203p goes bad if doesn't does heat up i had retightening my sliver circle things the other day it bring back to life before it didn't heatup and swr wasn't working this thing does when heatup it would shut it itself off it came back on i don't know black things are bad also preamp didn't work when tight up silver circle things it bring back to life even preamp works now and swr is moving sometimes the makers factory forget retighten sliver circle things if preamp doesn't work or your amp doesn't heat up
Thanks for the advice I was actually thinking of getting the same RM amp you reviewed
I drive mine with 41/2 watts rms and have for years. I deadkey 110 watts swing to 150. Yes I have mosfet final. I've talked skip to California and I'm in Milwaukee. Thus us in a mobile with a K40 Plus trucker antenna. Without skip I get about 28 miles mobile to a basestation. 21 miles mobile to mobile. My radio has been tuned correctly and SWR IS 1.15. GREAT VIDEO.
In the 90's I was a big Yaesu fan and I had that same YS-60 meter - wish I'd kept it but I sold it for some unknown reason. Having those red AVG and PEP led indicators made it easy to see which mode it was in. I now have a Diamond SX-200 and it's a good meter but can be difficult seeing which mode it's in because the AVG/PEP selection is just a simple in/out button. Your YS-60 looks like it has LED backlighting.
2Bit+ A -Cheap- (value) pyramid psv-300 30 amp switching supply with a Tsunami 10 farad competition capacitor sitting on top(stole it outta my truck lol). Gives my value power supply brute storage. And a handy little digital volt meter. The fan hasn't even turned on on my power supply running my RM203p. Love it. On Half Watt dead key swinging ten, I can talk all day on 1.0:1 antenna match and you can barely tell it's even luke warm LOL. Yet it works out in SSB land trust me. Great little amp running ultraflex TimesMicrowave 400 series straight into an RM 27/586 low pass filter. Yep.
Gorgeous radio.
Good amplifiers at a very reasonable price.
How well does the pre amp work ? TIA.
Hi,what was the actual fault and cure? Have one here on bench,replaced the PA transistor ,but still no output,wondering if maybe relay contact? check around PCB cannot see any burnt or bulging parts to suggest burnt out components,bit stuck?
if can do video kl203p that would cool learn fix your own i seen parts on ebay if can do it with battery solder iron.
I like the single final kl 200 much better than the kl 203, the 203 is too easy to blow the mosfets even with a 1 watt input.
I have the amplifier 203P and use it with mc kenley president uses new and amplifier that gives surprise my recommendation is that if you have an antenna used to hold whatts since the first antenna I melted the plastic
Funny hearing all the DX on his radio but this video is from 2015 when the cycle was still high. Four years later (2019) we're pretty much at the bottom of the cycle and the 10-11-12 meter bands are DEAD. Local traffic is about the only activity until the cycle begins to increase again. I hate it when it bottoms out like this because if you don't have any local people on the air then you can just put your radio away until things improve :>\
Had trouble with relay sticking onPower only installed large diode in line with red wire cured problem on rm kl 200.used 4 10 amp diodes in paraell
So I just ordered one of these amps. I popped open my President Washington to prep it for the amp. I turned down my AM power to 1 watt on the avg scale. Now my radio doesn’t seem to swing more than a 1-1.5 watts on am. Will that be enough? I read on another page guys were setting a dead key to 2 and swinging to 25. But I’m not sure if that was pep. Thanks for taking a minute to help!
I would wait and see what it does with the radio itself. General rule of thumb is 1/4th dead key of potential swing. These amps at best are 80 to 100 watts AM. Which is plenty in the big scope of things. So if the amp and radio seem to do about 80 PEP watts max, set the dead key with the amp on at 20. Dead key 20 swinging to 80. If the amp seems to do 100 then try to get close to 25 watt dead key. Perfect case scenario would be to have it all set up with a scope and see where they play together the best. Just be aware that anyone close to you will hear the bleed over with the amp on. Hope this helps.
These are NOT bad amplifiers at all. Run them with 2 to 3 watts on am and about 12 to 15 on SSB and it'll last a long time.. These guys try to run them with dual final radios and blow them up. They are made for your garden variety standard output CB radios..
Can you run them with 4 watts?
@@JukeRocksHero : Yes. With mine, 4 watts in gives 60 watts out (FM and AM).
My brother has a RMItaly 35KL sound issue, Also it makes a machine gun sound when I talk to him on my CB. We are 20 feet away if not more, No more than 200 feet. I just bought the SR-A10 and I am running a DF3000 RF limiter. My brother has a 2.5 amp power supply on his CB could that be the issue?
Why are you so close together? It sounds like you are tripping his COR relay from your proximity. Get some distance between each other and cut the amps OFF.
1 1/4 w swinging to ?
does it come with the cables plugged in the back of it
It only comes with the power cord attached. You'll need to get your coax patch cables separately
I have this same amp, I have a president Bill that puts out 4 watts with no way to turn down the power, can I put 4W into this amp w/o damaging it?
From the factory the president Bill is probably only doing 2.5 watts ( if measured on an accurate meter) you can adjust the power as there is a hidden service menu, it shows you on here. Check out uk cb radio servicing
was the 148f the one that ranger made after cobra and uniden parted company?
I am pretty sure it was fitasafiddle. It has a "148" board number but everything I read about them, they are a Ranger board.
how do you rate it against the older uniden boarded radios from the seventies and eighties? do you think ranger radios as bad as people make out or is it just a myth? the reason I'm asking is I've been running a superstar 3900 since 2007 with the ranger EPT360014B chassis and I think it's a great little radio but the only downside was the frequency stability on ssb was not as good as a uniden but have since had the radio sent over to a guy in Austria (Gerhard maurer) who modified the radio and it's now rock solid on ssb.
What are you asking for it.
how do you power your amp? what power supply are you using?
2Bit: I use one of these.
www.tracerpower.com/12v-22ah-lithium-polymer-battery-pack.html
Looks like it didn't meet the specs on SSB:
Output power: 100 W Max (PEP) AM/FM
Output power: 200 W Max (PEP) SSB/CW
I agree. Mine does a little over 100w with a 25w DK at 2.5w from the radio. But SSB is also 100w. Not even close to the 200w claim from RM. In all it’s a nice little inexpensive amp if not overdriven.
@@rallypoint1 In watching this video again it's even worse than I thought. Look at the power range switch on the Yaesu watt meter. Looks like the 20 watt position But he is reading the 200 watt scale. What I am seeing is about 10 watts output AM or SSB on that meter
Jersey John I went back after you and checked as well. I froze the shot of the Yaesu and it seems as if it is on the 200w scale. If you look at the function and power right next to it they are up. Basically against the chassis. So if it was the 20w scale it would be further down. I think it’s the angle. Good eye!!
@@rallypoint1 Look at 02:37 They are all 3 position switches. The Range switch is in the down position which is 20 watt scale. If it was in the 200 watt scale position it would be pointed straight out but it's slanted down.
Jersey John I dunno. He checks average on the other meter and it’s set the 50w setting.
I used to have a midland HF 747 amp and it had delay on response and meant I missed some conversation does this amp do this also or is it fixable, also I just got a ML 145 Magmount antenna in your opinion with this be capable for dx would appreciate your reply please
All amps with SSB switching usually have a small delay. The 200p has a SSB delay built in. It sounds like your older one might have a longer delay or you might have been using the radio in SSB and the amp in AM mode. All amps will act a little different according to how they are built. And I’m not familiar with that antenna. Just see what the power rating is of the antenna and try not to exceed that amount.
Does this KL-200P connect up and work right out of box without any mods?
Regnad Kcin yes it does work right out of the box.
Yep - plug and play.
@OIF/OEF-0341 Cobra 29 unpeaked should push about 3.5 watts. This drive level shouldn't be excessive for the amp. I've known guys detune their radios to 2.5 to 3 watts just to be safe.
@@rickvia8435: The instructions that came with the amp say you can input up to 10 watts in FM / AM mode and input up to 20 watts in SSB mode.
@@paganphil100 I wouldn't risk it. It's a lot better to underdrive an amp then to overdrive it.
Hi friend, I would know to reference the transistor used in this linear.
Hey Alex, Most of these use the SD-1466 finals but I do think they make models that use Mosfet's too.
kb4not I got the mrf 455 transistor in mine
Have you ever been told you sound exactly like Lester the famous CB tech in Jacksonville, Fl. owner of
LestersCustomTrkShp
?
Hahahahaha no I haven’t been told that yet. Lol!! I’ve had work done by Lester before so I would consider that a compliment for sure. Thanks.
@@papaklitts ...Yeah, he is one of a kind and a super tech. I have bought a few from him myself. KC4EOE
Where did you buy it? I've been looking for one myself
+Travis Fletcher I just got one from ebay from a US seller-He accepted a $65 offer...www.ebay.com/itm/KL-200-P-Mobile-Linear-Amplifier-by-R-M-Italy-W-WARRANTY-/231796609156?hash=item35f8279084:g:I9cAAOSwv0tVL7m4
I put bout 10 watts through mine rm works fine
but not for long before you burn out the input of the amp because they are rated at 4w max input.
@@sahhull : No.....they're rated at 10W max in AM/FM mode and 20W max in SSB mode according to the instructions that come with it.
@@paganphil100 Just because it can doesn’t mean you should. I run mine at 1.5w and it gets kinda warm. I did run it at 3w on another radio and it would get really warm fast. They are super low drive amps. If anything throw a fan on it. Just my experience with it. 73’s!
Will it run good with a 4 watt radio?
Four watts should be ok for the 200P. It uses a bipolar transistor (pill). If you have a KL203 (or larger) MOSFET amp, 4 watts is almost too hot... I'd recommend detuning the radio to about 2.0 -2.5 watts out. The RM MOSFET amps don't like over-drive conditions. Aside from non-linearity, the amp might just give you a ghost.
Any jumpers to move on this?
YWHIC1 no jumpers to move. Ready to work out of the box. Well at least the 3 I've had were ready out of the box.
+kb4not thanks
anytime
Radio cuareim
Did you order from China on eBay or HY? HY just screwed me and never shipped.. just got refund from ppal..
YWHIC1 Hey, I got mine from H&Y but it's been about 2 years ago or better now. They also have a store on eBay. Might use that just in case they don't ship then you got some back up from eBay. They aren't fancy but for the money they can make an everyday radio stand out a little bit.
Last i knew they were defunct. There is a seller on Ebay that sells them out of Kentucky.
What amp are your power poles please ?
Peter Brown those are 35 amp. You don't really need them that big, that's just what I had. They interchange between 15 to 45 amp. The plastic housing is the same size, just the metal contacts are smaller.
kb4not thanks. I just got mine this morning. Cable way too short. After watching your vid I guess it can be lengthened? I'm also bit lost with middle button. Is down position poet up ?
Peter Brown middle button is power on. The far left button is receive pre amp (boosts your receiver) and far right is AM/SSB
Peter Brown also the power button and pre amp button -- down is off and up is on for both or either. You can use the pre amp without turning the amp power button on. Notice the light color change
kb4not thanks again. All the 73's good buddy
I bought that one at H&Y Electronics in Louisville Kentucky. I think it was like $72 shipped.
www.hyelectronics.com
how tell your kl203p goes bad if doesn't does heat up i had retightening my sliver circle things the other day it bring back to life before it didn't heatup and swr wasn't working this thing does when heatup it would shut it itself off it came back on i don't know black things are bad also preamp didn't work when tight up silver circle things it bring back to life even preamp works now and swr is moving sometimes the makers factory forget retighten sliver circle things if preamp doesn't work or your amp doesn't heat up
Did ya?
BOUGHT MiNE FROM H& Y ELECTRONICS.. IN LOUISVILLE KENTUCKY... THEY GAVE ME A KILLER DEAL ON IT !!! 73s.
Overheating junk.