Friday, February 26, 2010

Parallel BS170 14,068 MHz TX

Tuesday, February 23, 2010

Friday, February 19, 2010

14,068 Mhz bilateral transmitter

Some MOSFET's BS170 requires a resistance from source to gate. It should be approx.3kOhm and needed to be individually selected. Coils on ring T37-6 are tuned for resonance , then TX signal is clear.Output power is abt 50mW ,if my power meter shows correctly. It easily lights LED , telegraphing tone also is clear.

Monday, February 15, 2010

...warming-up guaranteed....

I have the experience to build an antenna in snow and I know that hot coffee cup is equally important as the antenna mast. I went to the nearest store and did not get the required alcohol,so I bought the kerosene and Grant's Scotch whiskey. I remembered the good old oil lamps principle,and made a stove. It should be three-wick, the faster heats the water, wicks should be made of natural linen, or wool.Grant's in case the lack of fuel, the best Grant's pour not into a lamp...warming-up guaranteed...

Sunday, February 14, 2010

Tuesday, February 9, 2010