Home |
Search |
Today's Posts |
#11
![]() |
|||
|
|||
![]()
On Dec 31, 1:34*pm, John Smith wrote:
RHF wrote: On Dec 29, 1:44 pm, John Smith wrote: RHF wrote: [...] - Anyway you cut it ... a matchbox never will improve - the performance of a poor antenna, JS, - - So you are saying that I have an Antenna and Transceiver - - and can hear 5 Radio Operators in a Net on a Frequency; - - but only 2 of them can hear me. = BAD {Lousy} Poorly "Radiating" Antenna without the 'matchbox' in the circuit. - - I then put a MatchBox in-line between my Antenna and - - Transceiver and Adjust-It; and can still hear all 5 Radio - - Operators on a Frequency and now all 5 of them can - - hear me. = GOOD {Better} Nicely "Radiating" Antenna with the 'MatchBox' in the circuit. Once Again 'why' is it that with the MatchBox and the same Antenna and Transceiver : Now more people can hear me or hear me better : It the same Poor Antenna Hey may be MatchBoxs are Super Radiators ? and they are now hearing me off my MatchBox versus my Poor Antenna without the 'matchbox'. - - AGAIN - - - - To Me That Is Very Real Improved Performance from - - My Antenna and Transceiver that is a direct result of - - using the MatchBox between them. ~ RHF - - *. increase the capture area of a poor antenna, etc. It will MASK that antennas' short-comings ... same as sweeping dirt under a rug (notice, another mechanical analogy to the above.) Regards, JS I guess, any possibly way it can be explained to you, will fail ... If you introduce an inductance to resonate the antenna, you introduce a loss, if you introduce a capacitance, the same ... LC or PI networks, commonly used in matchboxes, have notable losses. I have a 60ft longwire, mounted ~40 ft. in the air. *Since it is only physically resonate on but a couple/few freqs, and, since I am not employing some form of matching on the antenna, and since the antenna does not, naturally, present a correct impedance to my feedline/rig, some form of lossy matching must be tolerated ... since the matchbox is located at my receiver, whatever feedlines I choose will also become a part of the "antenna." *The ideal placement for a matchbox would be at the antenna, as everyone is and has been aware of for a long time, or should have been aware. As I stated, continue to state, and have no other choice than to state when worried about being correct--no matchbox will ever improve the performance of a poor antenna--all it can do is allow you to get maximum benefit of that poor performance. You have separate components, affects/effects, terms, etc. all confused and lumped together. *Antenna design, capture area, etc. effect antenna efficiency--the impedance that/those designs/constructions entail, and the method of matching (transforming) that impedance to one acceptable, is another "thing", all-together. Regards, JS |
Thread Tools | Search this Thread |
Display Modes | |
|
|