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Wednesday, November 2, 2016

On the Air with the BITX 40 Module

This morning I built a mic/PTT for the BITX 40.   I used the little electret element that Farhan sent with the rig.  The element sits atop the plastic tube from a pen.   For the push-to-talk I used a little push switch that locks down (on) until you push it again (which opens it).  This is very convenient -- you don't wear your thumb muscles out on long "old buzzard" transmissions!  I used some PVC pipe and some wooden dowel to make the thing a bit ergonomic. It is held together with Gorilla tape.

It works great!  I put the rig on the air this morning and very quickly worked KD3TB up in Pennsylvania -- Irwin was testing his K3.  Then I worked KM4LWP -- James was only a mile or so from me, running 3 watts from a KX3.   Then Mario, K2ZGW called in.  Everyone said the rig sounds great. 

In the picture above you see the rig, the mic and (on the right) the VFO.

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Designer: Douglas Bowman | Dimodifikasi oleh Abdul Munir Original Posting Rounders 3 Column