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@juno.com>
>To: "'zdtech'" <zdtech@iprimus.com.au>; <amps@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@contesting.com [mailto:amps-bounces@contesting.com] On
>> Behalf Of zdtech
>> Sent: Friday, June 16, 2006 7:29 AM
>> To: amps@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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>>
>>
>>
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>
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