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2m Band VHF Antenna Pre-Ampilfier
By adding the following VHF pre-amp as 1st stage, the improving of sensitivity is spectacular. The pre-amp including also a Band-Pass input filter which rejects any undesirable
post 29 Jan 2024
Antenna for UHF VHF Links →
5/8 vertical antenna for 2 mt
Formed by 10 turns of 1 mm copper spaced 1mm
6 Elements VHF Yagi antenna
A 6 elements VHF Yagi "homebrew" antenna designed with YAGIMAX 3, with excellent results on local and satellites contacts
70 cm vertical antenna
Stylus length 427mm, coil 5 turns, with 4 radials 163mm
900 MHz 7 Element Delight Yagi Antenna
The T-Match eeding a Balanced Dipole. A suitable 4:1 balun is used in conjunction with the T-Match to perform this function
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Formed by 10 turns of 1 mm copper spaced 1mm
A 6 elements VHF Yagi "homebrew" antenna designed with YAGIMAX 3, with excellent results on local and satellites contacts
Stylus length 427mm, coil 5 turns, with 4 radials 163mm
The T-Match eeding a Balanced Dipole. A suitable 4:1 balun is used in conjunction with the T-Match to perform this function
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
Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free