| Home |
| Search |
| Today's Posts |
|
#1
October 16th 05, 05:57 PM
|
|||
|
|||
rf-systems WFL antenna?
Hello,
can you explain this antenna mentioned on this site? http://www.universal-radio.com/catal...wire/2039.html A almost flat swr response with such a small antenna must be a folded T2FD antenna. Is there someone who has tested this antenna? Greetings Johan PE1AEQ |
|
#2
October 16th 05, 08:49 PM
|
|||
|
|||
|
rf-systems WFL antenna?
"johan aeq" wrote in message l... Hello, can you explain this antenna mentioned on this site? http://www.universal-radio.com/catal...wire/2039.html A almost flat swr response with such a small antenna must be a folded T2FD antenna. Is there someone who has tested this antenna? Greetings Johan PE1AEQ It sounds like someone is trying to sell junk at a high price. Unless the price is also for the supporting poles. Oxygen-free copper wire sounds like the HI-FI boys and their Monster Wire are at it again. |
|
#3
October 16th 05, 10:47 PM
|
|||
|
|||
|
rf-systems WFL antenna?
johan aeq wrote: Hello, can you explain this antenna mentioned on this site? http://www.universal-radio.com/catal...wire/2039.html A almost flat swr response with such a small antenna must be a folded T2FD antenna. Is there someone who has tested this antenna? Greetings Johan PE1AEQ Hi Johan, I think you have the right idea. A broadband power limited small antenna suggests resistive loading at the feedpoint. It will work, just not very well until you get above the frequency at which the wire portion starts having some efficiency. As a guess, this one might do OK above 14 MHZ. A magnetic loop generally refers to a small loop with a very narrow bandwith, tuned by a variable capacitor. The claim that this is a magnetic loop on low bands does not hold up because of the broad band claim. Gary N4AST |
|
#4
October 16th 05, 10:56 PM
|
|||
|
|||
|
rf-systems WFL antenna?
Especially since oxygen free is another term for pure copper.
"Ralph Mowery" wrote in message ink.net... "johan aeq" wrote in message l... Hello, can you explain this antenna mentioned on this site? http://www.universal-radio.com/catal...wire/2039.html A almost flat swr response with such a small antenna must be a folded T2FD antenna. Is there someone who has tested this antenna? Greetings Johan PE1AEQ It sounds like someone is trying to sell junk at a high price. Unless the price is also for the supporting poles. Oxygen-free copper wire sounds like the HI-FI boys and their Monster Wire are at it again. |
|
#5
October 17th 05, 09:48 PM
|
|||
|
|||
|
rf-systems WFL antenna?
Let's hope someone dismantles one to see what is inside....
schreef in bericht oups.com... johan aeq wrote: Hello, can you explain this antenna mentioned on this site? http://www.universal-radio.com/catal...wire/2039.html A almost flat swr response with such a small antenna must be a folded T2FD antenna. Is there someone who has tested this antenna? Greetings Johan PE1AEQ Hi Johan, I think you have the right idea. A broadband power limited small antenna suggests resistive loading at the feedpoint. It will work, just not very well until you get above the frequency at which the wire portion starts having some efficiency. As a guess, this one might do OK above 14 MHZ. A magnetic loop generally refers to a small loop with a very narrow bandwith, tuned by a variable capacitor. The claim that this is a magnetic loop on low bands does not hold up because of the broad band claim. Gary N4AST |
| Reply |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Forum | |||
| Inverted ground plane antenna: compared with normal GP and low dipole. | Antenna | |||
| Discone antenna plans | Antenna | |||
| The "TRICK" to TV 'type' Coax Cable [Shielded] SWL Loop Antennas {RHF} | Shortwave | |||
| Yaesu FT-857D questions | Equipment | |||
| EH Antenna Revisited | Antenna | |||
Linear Mode
