That peak rating is for very low duty factor applications, such as
radar, and probably (although they don't specify it) only applies to
a very short pulse. Most of the HP components like this were
intended for instrumentation applications (and are now produced by
Agilent, which was spun off from HP).
On May 26, 2009, at 8:28 AM, John Kemker wrote:
> Yeah, that's why I'm asking others about it. It's only rated for
> 10W, but has a 5kW peak? That's an interesting spread. I wonder
> why the large range between nominal rating and peak rating?
>
> Bob Nielsen wrote:
>> You might want to reconsider. That switch is only rated to handle
>> ten watts average power:
>>
>> http://www.helmut-singer.de/pdf/hp8761A_8761B.pdf
>>
>> 73, Bob N7XY
>>
>> On May 25, 2009, at 9:39 PM, John Kemker wrote:
>>
>>
>>> Looking through my junk box, I found an HP8761A SPDT RF Switch
>>> with N
>>> Female connectors on all three ports.
>>>
>>> Has anybody used one of these for antenna switching on a common
>>> feedline? I'm not planning on putting anything over 100W
>>> through it. I
>>> figure, if I buy an amp, I should also plan on buying a heavy-duty
>>> Tohtsu for switching duties. Meanwhile, if I can use this
>>> switch, I can
>>> save at least one run of hardline or direct-bury coax and the
>>> associated
>>> costs, as I already have a spare pair of wires that will be
>>> running out
>>> to the tower in the rotator cable. I can energize that pair,
>>> either one
>>> polarity or the other, when I need to switch antennas.
>>>
>>> --
>>> --JohnK
>>> 73 de W5NNH
>>> 10X 75371/M&M 117/SMIRK 6185/TRA 2499/Norcross 228 F&AM
>>>
>>>
>>>
>>>
>>> ---
>>> avast! Antivirus: Outbound message clean.
>>> Virus Database (VPS): 090525-0, 05/25/2009
>>> Tested on: 5/26/2009 12:39:39 AM
>>> avast! - copyright (c) 1988-2009 ALWIL Software.
>>> http://www.avast.com
>>>
>>>
>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>>
>
>
> --
> --JohnK
> 73 de W5NNH
> 10X 75371/M&M 117/SMIRK 6185/TRA 2499/Norcross 228 F&AM
>
>
>
>
> ---
> avast! Antivirus: Outbound message clean.
> Virus Database (VPS): 090525-0, 05/25/2009
> Tested on: 5/26/2009 11:28:57 AM
> avast! - copyright (c) 1988-2009 ALWIL Software.
> http://www.avast.com
>
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|