Hits
Transmach 1.8 to 30 MHz designed for radio-amateur bands
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It is a simple L coupler that can be of great service for fixed or mobile traffic.
The above antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. For example, If you can't matching a random antenna with PI-type tuner, just turn the S1 switch in other position, ie T-type and try again. With L - PI - T one-box antenna tuner , we have a very wide matching system for any kind of antenna
This small coupler has a very classic T-pattern and uses an intermediate tap-type choke which allows tuning on all HF bands from 80m to 10m.
A roller inductor with 25 or more turns of 1.2 mm diawire (No 17 AWG) on a 50 mm former would be nice for the 100 Watt level and would easily cover 160m through 10m operation
Icom tunner AH4 with installation of the same for stationary or portable operation, making it easier to use
23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency
50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection
30 Volt Computer Power Supply Stack A bonus was that i discovered that these did not need a standby load connected to the supply to keep them running just apply mains power and close the Start lead to ground
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
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal