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Beverage Antenna Transformers
If the Beverage is being used as a single direction terminated antenna, the termination resistance is controlled more by ground conductivity, than wire height
post 15 Mar 2024
Low Band Receiving Antennas Links →
Loop per la banda degli 80m
Con l'uso di questo loop per la banda degli 80m, si intende cercare di migliorare l'ascolto di questa difficile banda radioamatoriale
Low Bands aplifiers LNA 1.8-3.8MHz
As an amplifier I used the famous 2N5109 for its excellent features of high OIP3, low noise figure in push -pull configuration.in input to the preamp I put a bandpass filter that passes the signals of the two low bands 160 meters and 80 meters , but which cuts the AM broadcast frequencies to about 600KHz, the frequencies of 40 meters and above. Possibly the filter can be removed and the preamplifier can make the whole band from 200 KHz to 30MHz
Low Band Receiving Loops and the Evolution of the Trapped Inverted L
Is a trapped inverted L. I made the trap from RG400 coax and PVC pipe. The trap is tuned to the low end of the 80 meter band
Low-noise receiving antenna for 80 and 160 meters
The Square is simple to build, install andtune. Here I'll tell you what's required to make 21-foot Squares for 80 and 160 meters, or a single Square that works on 80 or 160 meters at the flick of a switch
My 40/30/20/17/15/12/10 meter phased vertical antenna system
The Square is simple to build, install andtune. Figure 1 shows the Square as viewed from above. Here I'll tell you what's required to make 21-foot Squares for 80 and 160 meters, or a single Square that works on 80 or 160 meters at the flick of a switch
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Con l'uso di questo loop per la banda degli 80m, si intende cercare di migliorare l'ascolto di questa difficile banda radioamatoriale
As an amplifier I used the famous 2N5109 for its excellent features of high OIP3, low noise figure in push -pull configuration.in input to the preamp I put a bandpass filter that passes the signals of the two low bands 160 meters and 80 meters , but which cuts the AM broadcast frequencies to about 600KHz, the frequencies of 40 meters and above. Possibly the filter can be removed and the preamplifier can make the whole band from 200 KHz to 30MHz
Is a trapped inverted L. I made the trap from RG400 coax and PVC pipe. The trap is tuned to the low end of the 80 meter band
The Square is simple to build, install andtune. Here I'll tell you what's required to make 21-foot Squares for 80 and 160 meters, or a single Square that works on 80 or 160 meters at the flick of a switch
The Square is simple to build, install andtune. Figure 1 shows the Square as viewed from above. Here I'll tell you what's required to make 21-foot Squares for 80 and 160 meters, or a single Square that works on 80 or 160 meters at the flick of a switch
Noise suppression with X-phase II This device similar devices are known as QRM eliminators or noise killers, makes it possible
The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna
Spiderbeam 10-15-20m E' una Yagi tribanda full-size leggera, fatta di tubi in vetroresina e filo