[Amps] 5 kw amps -- why?

Barry Kirkwood bjk at ihug.co.nz
Tue Oct 19 14:44:24 EDT 2004


Well, I manged to fry a "1500W "  commercially made ferrite balun with 
significantly less than 1500kW out, let alone 3kW plus.
Since then have lived in peace with my homebrew coax solenoid baluns.
73
Barry



end
Barry Kirkwood PhD ZL1DD
Signal Hill Homestay
66 Cory Road
Palm Beach
Waiheke Island 1240
NEW ZEALAND
ph/fax 64-9-372-5161
www.waiheke.co.nz/signal.htm
----- Original Message ----- 
From: "Scott Manthe" <n9aa at arrl.net>
To: "Rob Atkinson, K5UJ" <k5uj at hotmail.com>; <amps at contesting.com>
Sent: Tuesday, October 19, 2004 6:25 PM
Subject: Re: [Amps] 5 kw amps -- why?


> Some hams like plenty of headroom. ;)
>
> I know a guy who literally vaporized a legal limit balun on his dipole by 
> accidentally running 85 watts into his Emtron DX-3, which produced over 
> 3000 watts output (pinned his Bird, so he really doesn't know how much 
> over) with that input power. He went outside to see little smoking pieces 
> of the balun all over his yard. I figured that that was enough "headroom".
>
> It should be obvious to anyone who's been an amateur long enough that 
> there are certain guys who "need" $13,000 rigs and 3, 5 or 8KW amplifiers. 
> I don't know why, but I do know what Freud would say.
>
> 73,
> Scott, N9AA
>
> ----- Original Message ----- 
> From: "Rob Atkinson, K5UJ" <k5uj at hotmail.com>
> To: <amps at contesting.com>
> Sent: Tuesday, October 19, 2004 12:12 PM
> Subject: [Amps] 5 kw amps -- why?
>
>
>> After reading a review in Eham today for the Emtron DX4 (2 4cx2500s) by 
>> an American ham, I have a question:  Is there any kind of operating at 
>> the 1.5 kw pep limit that would necessitate an amp with this kind of 
>> plate dissipation?  Sounded to me like an invitation to have the FCC park 
>> a van in front of your house.
>>
>> tks
>> Rob/K5UJ
>>
>>
>
>
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