Che cos'e una radio PMR446

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Che cos'e una radio PMR446

PMR446 radio ricetrasmittenti con 8 canali e 38 subtoni, che trasmettono su una fettina di frequenze larga poco meno di 90 KHz, nella parte bassa del

post 08 Mar 2024

Che cos'e una radio PMR446

Antenna for 446 MHz Links →

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Moxon's Rectangle PMR 446 Mhz
Questo tipo d'antenna e' ha il vantaggio del minore ingombro e della maggiore robustezza meccanica. La si puo' facilmente realizzare con del tondo d'ottone su un connettore SO-239

PMR446 Frequencies
Here are the frequencies of the 8 channels from 446-1 to 446-8. If you try to listen with a scanner

PMR Hentenna 446
Frequenza 446,05 MHz altezza totale 33,6 cm. larghezza 11,1 cm, loop piccolo 6,7 cm

The quarter wave ground plane
This GP antenna is easy to make, affordable for everyone

Simple antenna for PMR 446 MHz

Ferrite-shop

Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice

Kits and Components

Amateur radio kits by Kanga US

Pcs Electronics

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

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 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 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