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A Microphone Selector Switch


The best data switch box to use has a rotary switch knob and a multi-layer switch that controls 25 lines from one DB-25 switch is .It is time to plug in both microphones, the external speaker if used and the PTT foot switch if desired
post 14 Apr 2024
A Microphone Selector Switch

Microphone Setting Links

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Microphne connections
During the past eleven years many hours have been spent drawing diagrams producing photographs, compiling these lists and cross

MH-31 installation and other portable microphones
I have described the function of an HF clipper on my website and here I go into some special features of the HF clipper for the FT-817

Microphone boom headset for the FT-897
Whilst experimenting with various microphones for use with the FT-897, I realised that a boom headset would be a useful accessory

Microfono ad alto guadagno
Guadagno = 40 V/V 32dB,Frequenza centrale = 3500 Hz,Banda passante = 1500 Hz,Numero di poli = 2

DB37-FT-2000 Cable
can be used with the following microHAM interfaces


23cm Yagi Antenna building

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

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

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