[Amps] New Dummy Load

[Will Matney]

Dick,

Does Palstar use a stripline or a small toroidal transformer to sample the RF for the wattmeter? If toroidal, does it have a Faraday shield? I'm wondering why it's not wide banded enough.

Best,

Will

*********** REPLY SEPARATOR  ***********

On 6/16/06 at 11:05 PM PA3DUV wrote:

>I have used the Palstar DL5K with 5 kW input and found the dummyload a
>good 
>performer.
>However, the directional coupler and the power measurement electronics are 
>not frequency compensated.
>With a rather proper reading on 14 MHz the power measurement was way out
>on 
>3.6 and 28 MHz.
>For that application the Array Solutions PowerMaster with 10 kW coupler 
>might be a better tool.
>
>I found the PowerMaster with 10 kW coupler very accurate at power levels 
>around 6 kW, using my big Rohde&Schwarz 10 kW dummyload to dissipate the
>RF 
>energy  (Thanx Hans!). To check the PowerMaster readings I used my gud old 
>100 MHz Tec 465 scope and the attenuated output on the R&S 10/50.
>
>Cheers, Dick
>PA3DUV
>
>
>----- Original Message ----- 
>From: "Harold Mandel" <ka1xo at juno.com>
>To: "'zdtech'" <zdtech at iprimus.com.au>; <amps at contesting.com>
>Sent: Friday, June 16, 2006 2:55 PM
>Subject: Re: [Amps] New Dummy Load
>
>
>> The product spec sheet says "6KW Burst."
>> The bargraph on the front panel has a 2.5KW maximum.
>>
>> $2K?
>>
>> Palstar's big dummy load is calibrated to 5KW.
>>
>> Hal
>> W4HBM
>>
>> -----Original Message-----
>> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
>> Behalf Of zdtech
>> Sent: Friday, June 16, 2006 7:29 AM
>> To: amps at contesting.com
>> Subject: [Amps] New Dummy Load
>>
>> Just noticed this on Alpha's web page for those interested.
>>
>> http://www.alpharadioproducts.com/2100.asp
>>
>> Craig
>> VK3HE
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