I wanted to erect two 40-meter stand-alone verticals spaced one-quarter wavelength apart, and feed them out of phase

Improve my receiving performance,with the K9AY Loop System, seemed to be a good alternative, and required much less space

We have assembled a set of three poles with K9AY antennas and a phase and switching system

A 6 ft diameter loop would work out in terms of available space, that calculates out to 6 x Pi = 19 ft of coax

I built my vertical antenna, with a poor ground system, and managed to get a signal out across the USA fairly wel

This presentation offers solutions that liebetween large antenna systems such as multiple Beverages, and small loops and other compact antennas,including flags, pennants, EWEs, tuned loops and others

And only 14 meters long in the H plane,all radials are interconnected in a box, together with the ground rod and station ground

If the Beverage is being used as a single direction terminated antenna, the termination resistance is controlled more by ground conductivity, than wire height

This article addresses the subject of obtaining the best signal transfer from an antenna to the typical 50-ohm

This is a cursory comparison of three different configurations of the variable termination Delta broadband loop antenna as implemented in medium wave AM broadcast DX applications

In teoria dovrebbe restituire un segnale basso ma con un buon rapporto S/N, pressappoco come una Beverage

A 22 meters Spiderbeam fiberglass mast with an insulated wire slightly wrapped around it, verticals antennas need a lot of radials especially if is shortened on 160m

The Double Half Delta Loop DHDL Receiving antenna which only needs two 10m support poles, once the wires are cut and the Balun build, it takes less than 20 minutes to deploy the antenna

This whole idea came about when I had to run a RG174 feed cable to the EWE feed that was further away from the house than the termination side, so why can't I use the feed cable screen as the antenna itself and saving one wire?

The antenna is made up of two rectangles 30-feet long by 20-feet tall

Kaz's models and subsequent real‐world observation demonstrate that front‐to‐back F/B nulling can approach and exceed 40dB rear‐signal rejection on much of the MW broadcastband

The Flag Antenna Its name comes from its horizontal rectangular shape,horizontal dimension of 8.84 m / 29 ft. and a vertical (side) dimension of 4.27 m / 14 ft. T Length of the upper and lower horizontal wire members is typically about 2 to 3 times the height of the two vertical sides, original relatives include the Ewe antenna

Building a Ham Radio Flag Antenna for rx on 160m to 10m

Rx antennas – do any good?, iit’s all about the signal-to-noise ratio

A new antenna for 60m band, i decided to build a 2 element hb9cv / known as zl special as well

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

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, 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

With the antenna positioned for optimal cancellation in the west, the termination resistors in the adjustment range from 1K to 3K produced null values from 8 to 24 dB. A null value of 15 dB was typical

A 40/80m receiving antenna optimized for short and medium distances

Electrically, the loop consists of 13 turns of vinyl-coated #22 stranded copper wire, spaced 1/4" per turn

For the control line I got already a long 16 pole telephone cable which is going to be buried in a plastic conduit with the coax feedline.wires control line codes

This will give an even betterpattern than the end-fire, and an RDFreaching 13 dB with a separation of 100 meters between the loops

La radio senza un'antenna adeguata è come una macchina senza il motore, belle parole vero

A ewe designed to receive in any one of four directions, relay switching at the base of the central support allows selection of any one of the four wires

A grounded vertical radiator may be shunt-fed as with shunt feed the radiator is grounded at its base, and the system is excited at the point where the shunt-feed wire is connected

Remote control of the pennant's termination resistance provides optimum null depth on the principal axis

La caratteristica principale, che mi fa preferire Flag, Delta e Pennants rispetto alle Ewe e K9AY loops, è la loro indipendenza dalla terra, alla quale non c'è alcuna connessione

Anyone attempting to work dx on top-band 160 meters soon learns of the need for a good receiving antenna

This is a specialized receiving antenna, omni directional and thus with a low RDF, but with low sensitivity to vertical polarized noise and, my worst problem, to local AM broadcasting signals

These transformers, they can be used as part of a hybrid combiner or as phase inverters for an RX antenna array

Balun much simpler with two completely separate windings, in which the power cable braid is kept isolated and not connected to the antenna ground

Most of the time there are no horizontal signals at 20ft high for 160m, the arriving signals are shorted circuited by the ground, Tests on 3.5 or 7 MHz shows a different situation and there are plenty of horizontal signals