ZETAGI B300P POWER TEST IN ENGLISH.
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- Опубликовано: 29 ноя 2018
- ZETAGI B300P PLEASE READ DESCRIPTION.
The B300p by Zetagi is and old favourite of mine, I had one for years back in the 90s .
The thing just kept on going and was still going strong when I sold it on.
An under driven amp as a rule lasts a lot longer than one driven to the max.
A good SWR is a must really, as is knowing the output of your radio.
My meter does read under , I for one was quite surprised how much power the b300p produced.
Maybe my meter reads over a bit on the 200w scale, but all I can do is share my findings.
At the end of the day its more important to have a well set up antenna system that running hundreds of watts. 
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Thanks for this Steve, I've just dug out my rig and the old gold Zetagi. Last used 25 years ago lol. Just got to remember how to wire up Rig > freq counter > burner > antenna
Hi Jake sounds good fella.
What rig have u got, and if u need any help let me know ok fella.
@@CBRadiouk1 Thanks mate. It's a Midland 7001. 400 Channel old skool piece of machinery with that lustful vintage smell. I've got a box of my old rigs in the loft mainly Ham International Concordes etc
Hi Jake back in the day that smell would fill the room.
Now days these new guys are reaching for the fire extinguisher lol.
@@CBRadiouk1 haha yes. I said to the wife oh I love this smell and she said 'weirdo it stinks'. Oh the nostalgia.
Excellent video and I believe your meter. Over here is the U.S theirs people that have up to 5 even 20,000 watts illegal burners! To me the question is why? I talk skip alot and even 40 watts is great! My system is 40 pluse years old and I dead key 180 watts and it swings when I whistle to 260 RMS. PEP is a little over 400. Yet myself I do as you and look at the RMS, because it's the carrier. God Speed!! Psychological. I love your videos.
Hi Adonikam Anyone who has been on for a lot of years, will have stories of very low power contacts.
If the skip is not there it will not happen, it really is that simple.
Power helps of course but, is not the be all/end all.
Thanks for the comment fella.
Thanks for the informative video.
Even though the zetagi pushes out less than advertised it will still out perform those RM kl 203 amps.
The build quality of the zetagi means it will be around long after the RM amps have been thrown away.
Thanks for the video, I have been searching for this answer for weeks.
New to Ham radio, watts and amps confused me.
I noticed you didn't have your amp and ham sharing the same power supply, you just saved me blowing up a new crt ss6900 (not bought yet lol), but your video showed me the answer I needed.
A dummy load I haven't got yet, I'm older now at 49 and can afford to do it properly, unlike the 80's as a kid.
Thanks again for the video, new follower in me 👍
The 6900 is an OK rig, but u will have to have the power reduced to use an Amp.
@@CBRadiouk1 you'd have to explain mate, thats if you can be bothered, I wouldn't want to turn nothing down within the cb, but I wouldn't be running it on full power anyway.
@@EdzashedFudwinkle
The power is adjustable on a knob on the front of the rig.
@@CBRadiouk1 i have a b300p now, 5w as the sticker says, manufacturers page says 1-10w, works ok though for now.
Contemplating the kl503 hd
Great video Steve thanks
Hi Charlie thanks for the comment fella, I have one more in the pipe to show,
nicely done video excellent thank you
I had one Steve. It put out 135w on fm with 5w in from my yaesu 450D also.. SSB around 195w with around 6w. Then one day I plugged my Lincoln 2+ in forgot I had power up as I was used to the power always been set easily with the 450D.. Anyway I ran around 27w in and the place started smelling of mosfet marzepan.... Thanks for sharing bud
It's easily done Dell's I ran a mk1 Jackson with a power Mike into my rm 500.
Then oops the Amp nearly melted.
Interesting video .................
Ofcom , lol. Go clean up the spectrum.
Did you try the FT-450 with the internal tuner out of line? It can affect the power readings and if the input tune on the amp is okay, then it's not needed.
Great video. I have a 503p. Using a 2 watt RMS drive, the amp is cooler running with no clipping distortion.
Well let me know what its producing with 2w in.
Sounds like you got it set just right...
@@CBRadiouk1 I am getting 110 to 140 W RMS dead key Steve, depending on modulation into a wet dummy load.
@@CBRadiouk1 Thousand pardons depending on input VOLTAGE not modulation last MSG.
Thanks for the video. I have an RM HLA300+ that I've never installed. If you can do a video normal one of those it'd be handy!
Hi John if I had one I would fella, these amps are just part of my ever growing collection.
I have one more Amp video to show, prior to these vids not even I knew what the results were going to be.
The 300+ looks a nice piece of kit, get it in line just treat it gently under drive , keep it cool show it a good SWR.
And let tell me what it does :o)
Sure thing. I got it at a rally in Devon in the summer just gone. Got it for a bargain price. As soon as I get it hooked up (there really is nowhere to put it in my car unless I remove the glove box which I don't want to do and no base-station) probably when the days get longer I'll take it portable or static mobile and let you know the results!
Have not seen them around hear. I have had the RM italy amps .I have KL 203P and base tube amp KVB 1000 i think. has 4 EL509 tubes 240V works great .wonder if that is a biased amp .much cleaner on SSB .
Dose the old 1980s gold B300p go to 5 and 10w like this one dose ..good video too its in English
Thanks. I wondered why my identical b300p only seemed to give 150max on ssb with 10W input. Typical for cb stuff i suppose. My RMKL351P gave more.
Hi 34 i did a google search for your 351 , nothing came up.
The B300 got sold about a year ago.
A local guy wanted one and i was not using it.
My first b300 i had for around 10 years and still worked when i sold it.
i only really used it for dx or when needed.
Hello Steve great video, have just picked a new one up and on the bottom label it states that on AM/FM and driven by any more than 5 amps position 6 is not to be used?
What do you think? Any advise would be great,
Regards
Dan
HI Dan just put the 5w in on full power.
My test was to find out what the thing could do to the max.
As you would have seen you will get more than enough, with just the 5w in.
Great video? Why making a video only testing the amp on AM and not testing it on sideband? 🤔🤔
Nice test, but how is the audio when using full amplifier power in SSB..no distortion ?
Hi JMD no distortion in my experience, is u used a power mike full up u may pick up some rf.
Things to do if u get distortion is check drive power, (over driving)look for voltage drop at the power supply.
Check for high swr, at higher levels the Coax may start radiating more (rf in the shack syndrome)
Backing off mike gain may also help, as does good station earthing.
The list goes on.
A good radio with good antenna practice and you should be good to go fella.
hi steve
can you use the same amp for AM FM and Sideband?
many thanks
Hi Gary yes you can hence the ssb, and am fm switch.
Hey Steve it’s Gibbsy from Hemel , haven’t used ,mu icom 706mk2 for over a year now or any radio .
I have the zetargi , same one and same readings , it’s well made compared to The RM and better heat sink....
Have the radio picked up since a year ago , or is it still the same....
Hi Paul how you doing fella, there are still people about mate, it has picked up a bit.
I take it you know about Liam from Bedford.
I can find on ebay to buy this linear ?? I want to use the RCI69VHP ranger, I wanted your opinion, because I'm in doubt between this linear or RM 400 ITALY ?? 73
Hi I have used both and like both.
If I had to buy another amp, of this size, it could be either.
In short both are good, the choice has to be yours.
What ever u get under drive and put a fan on them.
Let me know what you go for ok fella.
Why making a video only testing the amp on AM and not testing it on sideband? 🤔🤔
its possible to modification for HF bands ? 40M. or 80 meters ?
Hi Mehmet the simple reply to your question is I do not know.
Some of the RM Italy amps have low pass filters in them and would be legal to use on the ham bands. This amp has no low pass filter in it's output stage so it would not be legal to use on the ham bands, and you'd make lots of enemies with the dirty nasty signal this generates on the ham bands. On CB nobody cares about a clean transmitter, on the ham bands they do.
Are they as good as the older version
Hi Ciaran that I can't tell you, all I can say is this one worked well.
I never did use it and have since sold it.
AS far as I know it's still going strong.
I had an early one for maybe 10 years, it still worked when I got Rid.
Steve Stevens how are the conditions on the 11 meter band as I only Ever go mobile and with the Lockdown it’s not possible .
It's saying up to 200watts am and 400watts sideband one listed on eBay
what they claim, and reality are not the same thing .
@@CBRadiouk1 "Claimed" Italian Watts 🙂
"I must say this amp is illegal to use"
....cough cough...
you shouldn t drive them more than 5 watts......gain over 4 watts isn t that much more and the swr on your yeasu is getting much more....(I think)
I use an b 501 p 24 volts and withn 4-5 watts I get 100-150 watts output,on ssb I use 8-10 watts input and 250 watts out....
I was confused about the input drive about my zetagi and there service center told me don't go over 5 watts but their manuel showed 1-10 watts am fm and 1-20 watts ssb!
and with 4 watts in with your b300 120 watts is spot on,the b300 has 2x mrf 455 and they push about 60 watts(each) with 4 watts in and draw about 10 ampere each....your swr meter is the best out there,i use an zetagi hp 201 and a cte 27-1000 n also accurate but only afther callibiration…..anyway good video!!!!!!!!!!!!!!!!!!!!
Don’t they say on the amp maximum input is 5w from
Rig ain’t running 10w in to get 150w ain’t that bad
Hi Kay yes Kay flat out is not great, but it was a power test.
A bit like driving a car full speed, no harm done and since sold the amp fully working.
Use a 1.8 watt deadkey swinging Audio and run your 6 stages again, you will be in inmpressed no lil amp like that should go past 2&1/2 watt deadkey operating.!
hI Pistol there is no swing using FM, And it was a power test so the thing got pushed.
Most of our AM KIt over here is, not set like yours.
Some have hardly any Swing, and some even have what we call negative modulation.
Thanks for Commenting fella, there will be more to follow.
@@CBRadiouk1 👍👌✌
Fala mto....
The focus on that new camera Steve is awesome. No searching or losing focus and its pin sharp. I assume you had the 450D on a seperate PSU. Great video and look forward to the larger amp test.
Hi Fred u will be surprised to know, this was done on my old Camera.
With some new bits to help it along.
My new Camera is great im Very happy with it, I have been playing about doing a different type of vid (different edit)
For that I been using the gopro 4 silver, and its a lot of fun to do, nothing uploadable yet but decorating atm.
You can put 20 watts into them on sideband
Mine goes better
Better in what way???
@@CBRadiouk1 4 watts in, 170 out in 6th position
@@alessandro8970 Hi Again Alessando, you must be lucky fella.
What meter do you use and do you test with a dummy load??