Home |
Search |
Today's Posts |
|
#1
![]() |
|||
|
|||
![]()
You don't need a long wire for listening. One a fairly small fraction of
a wavelength is probably adequate. If the noise level drops when you disconnect the antenna, it's long enough, and making it longer or adding gadgets to it won't help a bit. A number of the people posting on this thread are thinking of the requirements for an efficient antenna. Efficiency is important when transmitting, but of almost no importance for receiving. The antenna just has to be efficient enough to deliver more atmospheric noise than you have internal receiver noise. Any more makes no improvement. Roy Lewallen, W7EL RHF wrote: A 100 Foot long Inverted "L" Antenna is not a Long Wire for the AM/MW Broadcast Band with coverage for 530 kHz to 1700 kHz * One Wave Length for 530 kHz is 1896 Feet; and 100 Feet at 530 kHz would only be 0.053 WL. * One Wave Length for 1700 kHz is 591 Feet; and 100 Feet at 1700 kHz would be 0.169 WL. Like most people I do not have 600 to 1900 feet of space to string up a true "Long Wire" {One Wave Length} Antenna for the AM/MW Broadcast Band. So this is why I am 'questioning' the use of Ferrite Rod Antenna with a Coil as an integral part of a 100 Foot long Inverted "L" Antenna. still searching for answers ~ RHF . . |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Putting a Ferrite Rod at the Far-End of a Random Wire Antenna ? | Antenna | |||
Random length wire antenna | Antenna | |||
Loop antenna question | Shortwave | |||
Matching 9:1 transformer in random wire antenna. | Shortwave | |||
Poor quality low + High TV channels? How much dB in Preamp? | Shortwave |