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Current Rig per 2006

Free Radio Nova Shortwave Transmitter

This is truly a 'Rig-in-the-Box'! Because I only use it during holidays the rig itself is placed in a well rugged cabinet for field operations.

 

Free Radio Nova Shortwave Transmitter

I really do like the ex-Marconi front panel meter, very 1960's I thought!

 

Free Radio Nova Shortwave Transmitter

Inside the valve rig; 12BY7 Crystal Oscillator, 2 x 807 Power Amplifier, PL84 Clamp Valve. Band coverage from 3.85 kHz to 3.95 kHz, it covers the 76 mtr band completely.

 

Free Radio Nova Shortwave Transmitter

Seen from the bottom.....

 

Free Radio Nova Shortwave Transmitter

Seen from above......

 

Free Radio Nova Shortwave Transmitter

Tank circuit and 2 x 807 Power Amplifier, 30 Watts to 70 Watts nominal as desired. HT Power Supply is 525 volt / 300 mA

 

Free Radio Nova Shortwave Transmitter

Part of the audio section; the Internal MOSFET (BUZ900/905) 100W RMS into 4 Ohms solid-state amplifier. Audio driven by a Band Pass filter (<220 Hz) & (>5.5 Khz) and of course High Level Anode and Screen Amplitude Modulation with 100% positive and negative peaks available.

 

Free Radio Nova Shortwave Transmitter

Want 115V/230V any place any time? Just connect an inverter to your car battery and you have your 'mains' where ever you need it! I bought this inverter secondhand from a shipyard.

 

 

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