antenna with a tent
Hi everyone,
as I understand half-wave vertical dont need much of a ground but it would be nice to have one. And my question: while camping using a tent that is made from aluminium-coated nylon, could one use tents inner coating as a counterpoise to half-wave vertical. Im sure for 1/4 wave this coating would have much too big resistance, but for 1/2 wave where feedpoint voltages are high it should be ok? When working from insaid the tent, rig ground connected to tent's aluminium coating , is it electrically same situation if you were buried under ground? Is there any performance differences expected when rig ground is connected to insaid or outsaid of that aluminium screen. I found this rather confusing.. Any comments? Andrus |
Andrus,
The aluminum coating on your tent ~may~ work as (at least 'part' of) a ground system, depending on how large your tent is and how well connections are made. It would depend on the frequency of use (Mhz) naturally. How well it works also depends on several other factors, such as 'shape', just how thick the coating is (if it's very thin, such as with 'mylar', you may have a brief flash and no more coating! LOL). The size (or length) of the antenna really doesn't make a lot of difference as far as the 'groundplane' is concerned, what would work for a 1/4 wave should work just as well for a 1/2 wave. If your use is in the VHF/UHF ranges, 'maybe'. If it's for HF, there are better ways of doing it... 'Doc |
yes, aluminium coatin ofa a tent is probably no-good, I just wondered
could one transmit from insaid the closed sphere when other half of antenna still gets out from there. Andrus "'Doc" wrote in message ... Andrus, The aluminum coating on your tent ~may~ work as (at least 'part' of) a ground system, depending on how large your tent is and how well connections are made. It would depend on the frequency of use (Mhz) naturally. How well it works also depends on several other factors, such as 'shape', just how thick the coating is (if it's very thin, such as with 'mylar', you may have a brief flash and no more coating! LOL). The size (or length) of the antenna really doesn't make a lot of difference as far as the 'groundplane' is concerned, what would work for a 1/4 wave should work just as well for a 1/2 wave. If your use is in the VHF/UHF ranges, 'maybe'. If it's for HF, there are better ways of doing it... 'Doc |
Andrus,
Could you transmit from 'inside' the antenna? Sure, it's done on ships all the time. 'Doc |
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