Gary Schafer wrote:
> Probably not usable out of the design range. The Polyphaser devices have a
> series capacitor in them. On UHF it is a rather small capacitor and I don't
> think it is large enough for HF to pass.
>
> The higher the frequency the lower the power rating on them also. Different
> gas tubes for different frequency ranges.
>
Ahhh...I'm pretty sure all the Polyphasers I have are solid state. I
didn't know they made any with gas tubes.
73
Roger (K8RI)
> 73
> Gary K4FMX
>
>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com [mailto:towertalk-
>> bounces@contesting.com] On Behalf Of Steve Norris
>> Sent: Thursday, September 10, 2009 9:36 AM
>> To: towertalk@contesting.com
>> Subject: [TowerTalk] Question on Lightning Protection Devices,
>> Polyphaser,etc.
>>
>> Have two general questions/assumptions on use of polyphaser devices at
>> frequencies OTHER than the design bands.
>>
>> (1) I would assume that a unit's inherent lightning protection for the
>> coax
>> run would be "intact", regardless of the frequency design of a device. It
>> just wouldn't necessarily be useable for transmitting or receiving at none
>> design frequencies. That being said:
>>
>> (2) I would also assume that a device designed for HF frequencies WOULD
>> NOT
>> be useable for higher bands VHF/UHF/SHF frequencies. I wouldn't try that.
>> However, I have no idea whether units designed for the higher frequencies
>> (i.e. cellular bands at 800mhz and up), could safely be used on "lower"
>> frequency HF/VHF bands. The reason for the questions is the cheap
>> availability of some "very robust commercial devices (Polyphaser) removed
>> from cellular service.
>>
>> I would STILL use devices at the house/shack entry that are designed for
>> the
>> correct bands. But, I was hoping to add some of these bulkhead polyphaser
>> units at the tower/antennas, for additional protection. Comments?
>>
>> Steve, W5KI
>>
>> _______________________________________________
>>
>>
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