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My_My Home Station (An Icom IC 718) |
Thanks to my inner 'radio sense'! I must be having a strong 'radio sense' man! I found the confidence in him and he proved it!
Thank you Raj for the wonderful help.
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| Hey! It
would be an injustice if I don't acknowledge the great help received from OM Raj (Rajiv Kumar), VU2VTH, who repaired this rig long
time back..Just after importing the rig, I damaged it's microphone circuitry by directly
feeding a PSK31 signal from my computer soundblaster (the CW was still functioning). In
fact I used an attenuator initially, but thought of removing it! I thought the attenuation
was too much because I could not find a single trace of whisper with one small speaker at
it's out! I opened the rig with the entire circuit diagram in front of me..tried to trace
the fault along the entire microphone circuitry (highlighting the path in the circuit
diagram with a yellow marker in a typical novice way!) but without any success. Then Raj,
VU2VTH came to my shack with his high power specs on..I have seen a light of happiness in
his eyes through those specs when he told me-"I got it!!". Then he asked me for
a 1 microfarad capacitor which he thought was the culprit'. I removed a small SMD
type 1 microfarad capacitor from my old computer CD player (in fact I willfully damaged
the faulty player to get my ICOM IC 718 repaired !! It was a month long nightmare for me
to release the IC 718 from the Delhi customs!!). He carefully removed the SMD type
capacitor from the ICOM board and replaced the capacitor. But alas.. still the SSB was not
functioning! Just a moment of despair and then I saw the light again in his eyes!
"Give me a low value 'resistor' now"..."10 ohms would do?" "Oh
yeah give it to me! Then he bypassed the 'open circuit' through this small value
resistor into the 'Ground'. And voila! The rig was back in action. He told me that it was
an 'open circuit' in the 'Floating Ground Path'. Now that the path can float with this
resistor below I became a 'SSB operator' again. Oh yeah! I am usually a 'CW operator'..I
love and adore and a fan of CW..which was great fun for me when I operated CW (Of course I
made one somewhat eratically functioning VU2VWN TX too in 1989
and mostly busy sending AM signals to a distance of 150 km to VU2RCH). Thanks to my inner 'radio sense'! I must be having a strong 'radio sense' man! I found the confidence in him and he proved it! Thank you Raj for the wonderful help. Back |