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Lindenblad Antenna for 137MHz
Antenna Lindenblads because they're easy, cheap, robust, and good performers
post 08 May 2024
Antenna for UHF VHF Links →
collineare 900MHz
Per le prove ho utilizzato uno spezzone di cavo RG213, ma qualsiasi altro cavo puo' andar ben
Double 5/8 Flower Pot Antenna
Constructing the antenna using RG59 75 OHM solid dielectric cable and bringing the feed co-axially down through the bottom element as below
Folded dipol for 2 mtr and 70cm
Dual Alford Slot Antenna
154
Per le prove ho utilizzato uno spezzone di cavo RG213, ma qualsiasi altro cavo puo' andar ben
Constructing the antenna using RG59 75 OHM solid dielectric cable and bringing the feed co-axially down through the bottom element as below
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