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Hot Fusion Profile
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Registered: 03-2008
Location: South West England
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Re: Zetagi B300P amp.


Yes, there is a valid point here:
The CB market can be sold any old crap in the name of a linear amplifier, simply because that market is totally unregulated and these devices are illegal to use on that band.

Therefore it makes sense for the manufacturers to cut as many corners as possible and offer the equipment at attractive prices, yes? The result is basically crappy gear.

If it were destined for the amateur market, the equipment would need to meet certain standards and to acheive this adds expense, putting it out of range of many casual CB fans.

Incidentally, the best made linear amp I have encountered was the Bremi BRL200 valve unit - nicely rated transformer, half decent electrolytics and Pi output. My only criticism would be that the valves were biased a bit on the heavy side, but an appropriate zener in the cathode circuit would probably have sorted that out.

Last edited by Hot Fusion, 9/Mar/2010, 7:30 pm


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Andy - 26 FB107
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maybach52 Profile
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Re: Zetagi B300P amp.


Once again thank you for the information.

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OP: Bob.
18/Apr/2010, 10:06 am Link to this post Send PM to maybach52
 
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Re: Zetagi B300P amp.


a BIGGER LINEAR is needed mate !! lol
23/Apr/2010, 11:27 am Link to this post Send PM to porky69
 
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Re: Zetagi B300P amp.


if you need ya amp certified roberto bring it round one nite???
i've a 1kw dummy load & a 1200watt meter with pep???
& we can give the full on the 50amp psu emoticon emoticon emoticon

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139 in any GOOD group??
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Freebander
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Re: Zetagi B300P amp.


Hi Guys
i'm reading this thread with interest although i am finding it dificult to get my head around it all.
My question is i am running a rm500 amp and when parked close to my caravan and i key the mic the lights come on is this dirty harmonics you talk about ?
If so am i over driving the amp, i use a 148 but have never checked the out put power.
Ewen
11/Mar/2012, 9:18 pm Link to this post Send Email to FB103   Send PM to FB103 Blog
 
Hot Fusion Profile
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Re: Zetagi B300P amp.


Hi Ewen.
No, you are just experiencing the effects of a high RF field. The same as can cause a modern-ish car to grind to a halt if you key the mic.

Or wipe out a neighbour's TV. emoticon

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Andy - FB107
20/Mar/2012, 5:56 pm Link to this post Send Email to Hot Fusion   Send PM to Hot Fusion
 
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Re: Zetagi B300P amp.


So,just to clarify.
If i run over a rat on my Vespa,it wont be as squidgy as if i run over it with my 44 ton truck,right.

But i could always run over it twice on the scoot,as with a Vespa,it is well under half the weight of my [sign in to see URL] that could just be manufacturer info.

So,to finish.
I want to know,in simple terms,how many times i need to run over the rat on my scooter,to get the same effect as if a ran over it in my truck.

PS,the truck isnt linear,nor is the scoot,and both have different tyre widths,does this matter?

PPS, i dont park near caravans,cos the lights keep flashing.

Anyway, whats a cb amp?
 emoticon

Craig.




Last edited by CraigOWL, 27/Nov/2012, 7:57 pm


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26FB79 26FI79 26SY351 26OK64

"Women are like old Lambrettas,you can only push them so far"
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Re: Zetagi B300P amp.


The best way is to hang the scooter from a crane at say, 100m, then drop it on the rat. Same effect as driving over it with the truck emoticon




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By all means think yourself big, but never think others small.... R.F.Scott
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Re: Zetagi B300P amp.


At last,it all makes sence now.
 emoticon

Craig.

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26FB79 26FI79 26SY351 26OK64

"Women are like old Lambrettas,you can only push them so far"
27/Nov/2012, 9:15 pm Link to this post Send Email to CraigOWL   Send PM to CraigOWL Blog
 
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Re: Zetagi B300P amp.


Interesting read this thread. I have a little kl200 and on my old radio, early version ss3900, it peaked at 20w ssb and with the amp it done about 140w. I now have a Maas dx5000 and on the lowest power it does 25w ssb and my amp is doing 200w now. It gets hot quickly, but not interfering with tv or radio in our house, and not getting any on air comments of distortion. Inside the radio everything is so tiny, I dare not play with the settings. Even with my glasses on I can't see clearly the components, so that is where the power setting remains.
As for the ham/cb(gear,not operators) thing, if cheap cb/11m equipment wasn't available, then I would not be involved with this hobby which I really enjoy. As with countless others with families, homes, ever increasing cost of living, this is the only avenue into radio com's hobby(cheap,low quality gear). I find myself very fortunate to have scraped together some second hand gear so I can enjoy radio again.
Happy DXing,
Mike.

Last edited by 43FB065, 28/Nov/2012, 1:54 am
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