Testing a Uniden 980 SSB with a RM Italy KL 203
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- Опубликовано: 27 авг 2024
- I'd say the modulation is set to high, but it never made any buzzing sound in my Jeep with the 6 foot skip shooter antenna. I'm guessing just some strange harmonics going on while hooked up to bench power and dummy load. I've tested many amps that would run perfect in the mobile, but showed strange operation while on SSB on the bench, while others ran perfect. Not really sure.
The reason you're hearing that buzzing is the fact that you are overdriving that amp. On AM the amp requires a 1w carrier to give it the 30w carrier that is needed when the amp is on. From the amount of swing, appears as if the modulation potentiometer is turned up beyond 100% modulation as well, and will cause distortion. Just make sure that you aren't dead keying over 30w with power on, and the amp will run cool for many years to come.
Is there a power ajustment on a 980 ssb?
@@1000to1 yes
@@Orefamilylawncare it must have been added by someone because it doesn’t come with variable power from the factory.
@@1OFGODSOWNLOL, you don't know what you're talking about.
@@vegasfordguy I owned one and there was NO VARIABLE POWER from the factory.You don’t have a clue.😂🤣🤪
My Texas Star Skeleton 100 does the "buzz" thing as well but sounds clean and clear on air. I recently started watching your videos and enjoy them . Keep it up! -Station 18 Las Vegas, NV
Thanks. So is Hell Raiser still on the air in Vegas? The drunk guy near Tropicana and 95?
@@vegasfordguy Last I heard of him he needed money and sold his 4 pill Messenger to another local.
@@Station18 LOL, I sold him that Messenger 300. He probably burnt it up by the time he sold it. Small world.
@@vegasfordguy No doubt!
Brother this is a great amp for the price I just seen 220 pep, I have one myself very impressed with it.
I have same one set up at my base and buzzing same and i actually have same meter and get same power output. With my uniden pc78ltx. Good video.👍
I have one. It worked well on my truck install and now bumps my small base station with an attic dipole in the house. It shows me a little less than your test. For the price it will get you out of mudduck status😄
Something is up with the one I tested, I'm pretty sure it pushed around 160 or so last time I tested it. It's buzzing pretty good and never did that before. I'll take a look at it one day.
@@vegasfordguy this buzzing my be your power supply..🙄. check again whit Only your car battery if it doesn't buzz then is your Power supply...🤔 ( Your power supply my be good..but the amplifier my not like the amount of amps or voltage )
Turn down the modulation
noise is due to input overload but amplifier works fine
Just picked up a 503P HD, hoping it works good
How did you get your deadkey set?
Do you Astatic handheld power Mike is ok to run in the 980???
I've got the big brother kl 503. Its not a bad amp. I horse traded for it to have as a back up. Never hurts to have a couple extras....right?
I have had 503p for 5 weeks now and very happy putting 2.5w dk swinging 20w. At setting 3 with amp on getting 80dk and pep just over 250w gots lots of reports of how clean it sounds up to 40 miles away as the crow fly.
new to cb and ham, how do I tune my radio (bearcat 980 ssb) to work with an amp? I know I need to turn down the output etc, but specifically what to do with this specific radio?
I bought a KL 203 back in 2012. It always showed me about 100watts on my cheapo Radio Shack meter. I always wondered if that meter read low. Meter no longer works so I have no idea what it does. How do you like that Workman? I am in the market for something inexpensive.
Swr meters have gone nuts here lately. Those workmanship were 45 bucks not too long ago. Now they're going for darn near 115
@@luke8210 I noticed a couple weeks ago that Workmans were out of stock or priced over retail everywhere I looked. I am thinking lots of guys are getting ready for the skip cycle that should continue to get better and better over the next 24months. Preppers buying radios too.
Local conservative news last week mentioned a coming "Chip" shortage for electronics. They mentioned General Motors currently has three lines shut down due to that chip shortage. Amplifiers and replacement parts may be in short supply in the near future. I hope I am wrong.
Compared to many other budget meters, this Workman hp201s is surprisingly accurate. They used to cost around $35 on Amazon, however I just looked yesterday and they're up to about $120 now! All of this Covid nonsense has really caused prices to go up. I'd recommend the MFJ-870 as it's a good solid meter and around $100 currently. Just make sure you buy the 1.6-60 Mhz version.
@@luke8210 Yep, I see the MFJ-870 is still available for about $100 bucks. I'd buy those.
No Radio Shack wattmeter can read Peak Power since they don’t have a Peak Reading Circuit in them.I know a couple of them said,PEP on them but they were 100% BS Since they had no power source for a Peak Reading Circuit and that’s a Requirement to read PEAK/PEP output power.👍🎙
Howdy, I have that same radio and I'm looking into getting me an amp like the one that you have. Did you have to go inside the radio and make adjustments in order to use that amp? Good video by the way, I've subbed your chan.
Uniden are awesome radios..can I run a Klv 703 with the 980???
Yes you can it will run fine is the amp a hd or low drive
Is the little amp supposed to do150+ l have a 203p that I haven’t used yet but the information says to expect 60 to 100 on am. It would be a pleasant surprise to see 150 from it. When I get my new antenna up and can test it I’ll let you know how it does...Thanks
I know they had two versions, a transistor and a mosfet version. I think this is the mosfet version.
@@vegasfordguy Nice video ,I believe the KL-200 is the transistor version and is a bit more expensive. I have a KL-203 on a President Mckinley with a Sirio Performer 5000 mag antenna. Gets out good and I spoke to England from the Western MA a week or to ago.
Did you do anything to adjust the dead key power input on the 980SSB or is it bone stock?
I lowered the dead key to around a watt. Otherwise that little amp would have heated up pretty quick.
@@vegasfordguyHow did you lower the deadkey?
Nice, did you ever sell ur Superior amp? 73, Bob 290
Yes I did sell the amp.
Did you turn the watts on the radio down to use the amp.?
@@danielkinsman1964 Yes, the RF power will need to be turned down to about a watt DK and the modulation turned up.
How did you get your dead key set?
Open that thing up and put some hot glue or something on the transformer. It's the loose ferrite cores on the output transformer.
Is that what they mean when they say you're transistors are screaming ?
Yes. Exactly that. He's way overdriving that elcheapo amp. Kl203 is a okay little kicker if you don't drive it so hard. But just get a good radio.
Is the SWR meter in the radio still accurate when it's connected to RM Italy 203?
It should be as far as reflective power coming back to the radio. Most of the time I'll see the SWR go a bit higher with an amp on, but in this case the 203 is such a small amp that my readings on the radio seem to stay the same. I tuned it with my antenna analyzer first, just check the radio to make sure nothing has changed.
@@vegasfordguy Hmm Yeah I am able to run RM Italy 60. just fine. but the 203 is really throwing my SWR off. Might have to return it. Thanks for the quick reply.
@@elliothuh669 Could be the tuning inside the amp. May need to try different lengths of jumpers.
@@vegasfordguy Yeah different size jumpers lower the SWR on the radio. But doesn't the AMP still see a high SWR?
NEVER Trust a built in SWR Meter on any CB Radio. There is an adjustment inside the radio and it can change and you will never know it.👎🏻
Make a video how to turn the dead key down
How do you hook the 2 up?
I have the 880 tomorrow morning taken back and getting the 980 .. and I push mine with a 300 watt amp
Definitely get the 980!
@@vegasfordguy yes I just got the 880 about two days ago I'm taking it back paying a little more on top of it and getting the 980 I miss having ssb and shooting skip
@@vegasfordguy got it just need to know how to turn down dead key to run my amp
@@vegasfordguy can you tell me how to turn down dead key plz I have the 2021 bearcat 980
@@nightlife7231 I believe mine was marked by each adjustment inside on the board. It's been a while since I was in it.
I watched a few times I couldn't hear any noise sounds good.
Did you figure out why it was making the noise? Possibly too much wattage? I read they want you to put less than 10 watts into it.
Pretty much anything I hook up to the dummy load makes this noise. I think it's because it's exactly at 50 ohms. I've noticed the same exact noise on several of the amp builders videos.
@@vegasfordguy I appreciate the reply. Looking into this amp for myself. Seems like a nice inexpensive unit.
@@vegasfordguy that’s total BS.If you think that’s it then Please explain what it has to do with anything? I’d truly love to read that one.😂
I'am Your Newest Subscriber I Bought That Same Radio Used For 50.00 Not Sure If I Like It Or Not
/its your power supply.
Got both the radio and the Amp. Power cord too short. Wanted to put in a '15 Corolla.
Extend the wires, it's not hard to do.
@@vegasfordguy what I thought. Thanks..Now to find a place to run the wires.
Those wires will not be fine you are choking the amp of current
It was for "testing" purposes only and as you can see it was just fine. This amp draws very little amperage.
Ground radio!!
I have a 980 also with a 503 rm italy it claims 1-6 watts dk for the amp
@@KE8ODY-WV-Ares-Ham-Dad-3O4 That's what it claims, try putting 5-6 watts into it and see how quickly it becomes hot and stops working.
@@vegasfordguy okay so keep it low how low honestly
@@KE8ODY-WV-Ares-Ham-Dad-3O4 It's going to depend on the radio you're using, how much modulation and pep swing. On the 980 SSB you'll probably want somewhere around 1-2 watts and you'll want to turn the modulation up to compensate for lowering the dead key. Turn up the modulation until it sounds good and see how hot the amp gets. If it only gets warm then you'll be fine. If it's heating up quickly then I'd back off the desk key about 1/4 watt at a time. You'll find the happy spot where the amp doesn't get too hot and the over the air quality sounds good. I believe after trial and error about 1.25 watt DK with modulation turned just over 100 percent was the ticket for mine. Ever set up will be a bit different.
@@vegasfordguy can I use my ceramic screwdrivers to do adjustments or will I need to buy ole school plastic tuner tools
@@KE8ODY-WV-Ares-Ham-Dad-3O4 a regular small screwdriver is fine as long as you're careful. It's up to you.
It’s rf
You are overdriving your amp, that is why it is buzzing. You will be lucky to keep it very long using it like that. Your audio will also sound crap with this particular amp above 5 watts input. I know it says up to 10 watts input in the instructions, but realistically these amps are really only designed to do about 100 watts or so on AM/FM and SSB. To get the best out of this amp, limit the power to 5 watts max. These amps really are the cheapest of the cheap and they should be treated as such. I’m really surprised that you do not seem to be using a low pass filter with this amp either, considering the level of spurious emissions it produces which is quite shocking if you could see it on a spectrum analyser. That’s why ham radio amplifiers cost many thousands of dollars more, because they use the best quality components and have the correct filtering in place to prevent spurious emissions from becoming a problem. Anyway I hope this helps. 🙂
Lol, not over driving it at all, if anything I under drive my amps. I've never burnt up an amp and I've ran several over the years. Some amps buzz, especially on a dummy load.
That RM stuff is mostly junk. I had a 200 with pre-amp. It blew up my 980.. diagnostics-logic board, and a loud squeal. buyer beware.
It's all about how it's set up. If you don't know what you're doing, then yes you can destroy your equipment. If your dead key input is set up correctly along with your coax and antenna system then you'll never have a problem. RM Italy isn't junk, it's just not made for the big dogs.
Take the amp off the radio
Has nothing to do with it.