The blog of a dedicated radio amateur and electronics enthusiast

"Having fun on the air and in the workshop - communicating and creating"
Showing posts with label 32N12. Show all posts
Showing posts with label 32N12. Show all posts

14 February 2014

Getting ready for 630 metres

Experimental amplifier for 475KHz using a single 32N12 mosfet
Just a few days ago I read that the 630m / 475KHz band will be released to radio amateurs in Poland from 18 February. Having no transmitter for that band and wanting to radiate a signal from the first moment the band becomes available, I had to make something very quickly. It was a race against time and all I could hope to complete was an amplifier, ( based on a type 32N12PV2 mosfet device ), to boost the output signal of my frequency synthesizer by about 26dB.
For the antenna, I plan to use my existing 46m end-fed wire, ( posted on 12 August 2011 ), and part of the loading coil I already use on the 2190m / 136KHz band; ( posted on 19 February 2010 ).
With this setup I shall be amazed if I can even make contact with local radio amateurs, ( let's say those up to 10Kms away ), assuming there will be any of them also equipped and active on the band at the start. Still, it's worth a try.