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7 Mhz Vertical Antenna

7 Mhz Vertical Antenna
    The secret with this antenna is to install as many radials as you can around the base of the antenna, they can be anything from 1/8 wave or longer
post 08 Jan 2025



Antenna Vertical Links →

181



Antenna Sloper
L'angolo che si forma tra il palo di sostegno e il filo irradiante dovrebbe essere tra i 30 e 45 gradi di inclinazione

Antenna tipo canna da pesca
L'antenna necessita di un solo contrappeso di 18 mt come sopra indicato, ma sarebbe opportuno provare con un radiale di 25, 30m

Antenna Up and Outer
Is a substantially half-wave dipole except that the two arms are somewhat differently positioned

Antenna aperiodica 10-15-20 meter
Piano di terra con rete da pollaio 1m x 10m divisa in 2x6m incrociati a 2/5 circa


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Pcs Electronics RF power amplifiers-pallets archives-ABC of FM AM DAB+ DRM radio transmitters

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1/4 Slopers 40/15M Band

1/4 Slopers 40/15M Band The antenna that most suited this application was a 40m band sloper as the guy wire to be used was slightly longer than a 1/4 wave length at 7 MHz and the top fed sloper was the most convenient installation having the least impact

All band dipole Mk2

All band dipole Mk2 The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length

160M 1/4 Wave Vertical

160M 1/4 Wave Vertical 160m vertical antenna project. It is 100' of Rohn 25G and a 20' aluminum stinger. The base is made out of four 6' power line insulators sandwiched between two Rohn base plates. 7/8' stainless bolts hold the assembly together. 32 radials 50' long and 30 radials 100'

DHD Double Half Delta

DHD Double Half Delta This is a dhd double half delta in theory it should return a low signal but with a good s - n ratio roughly like a beverage

Visual CW Tuning Indicator

Visual CW Tuning Indicator Many transceivers set the CW transmit off-set equal to the set's sidetone frequency. But it was left to the operator how to match incoming signals to the sidetone for one-frequency QSOs an awkward and time-consuming procedure

Antenna splitter per VHF-UHF per quattro ricevitori

Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter

trap-dipole-7-10-14-18-50-mhz

Trap Dipole 7, 10, 14, 18, 50 MHz Trap dipole 7-10-14-18-50mhz with balun coax cable

Diy Arduino CW keyer

Diy Arduino CW keyer I added code to read push-buttons on digital pins to trigger hard-coded messages like CQ and CQ SOTA

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