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 Post subject: LM386N Xmitt In CM Satellite Meter
PostPosted: Nov Tue 13, 2012 10:52 pm 
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After piddling off and on for the last couple months it's finally finished(well mostly), I still need to repaint the cover...

On-off sw & gain(level) are operational...

Image

It's built semi-modular, board can easily be removed for service or modification... Plug with brown, orange and red wires connects to the power indicator LEDs(has standby and in operation modes)... Audio is fed from gain pot on front panel through the large connector and one at it's upper right connects to ammeter on front panel(in series with B+), lower plug connects ant tuning cap... LM7809 regulator installed at angle for cover clearance...

Large black item is a cover over the line fuse also has a scrap piece of pref board Velcroed over 120v connections to power transformer...

Image

Better shot of board & tuning cap, antenna peaking performed from back panel...

Image

Belly shot of the PCB and 110ma @ 10v xfomer...

Image

Tom


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 Post subject: Re: LM386N Xmitt In CM Satellite Meter
PostPosted: Nov Wed 14, 2012 1:54 am 
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Location: SE USA
I'm not getting it. Satellite strength meter transmits to...

or is this a BCB xmtr built inside of a satellite meter box ?

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 Post subject: Re: LM386N Xmitt In CM Satellite Meter
PostPosted: Nov Wed 14, 2012 3:40 am 
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Here ya' go!!

viewtopic.php?f=12&t=193042

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 Post subject: Re: LM386N Xmitt In CM Satellite Meter
PostPosted: Nov Thu 15, 2012 12:38 am 
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Joined: Feb Sun 27, 2011 4:23 am
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Looks nice Tom, is the meter wired in to indicate antenna tuning?
BTW my last one was built into a wooden cigar box.

-Sam T.


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 Post subject: Re: LM386N Xmitt In CM Satellite Meter
PostPosted: Nov Thu 15, 2012 4:15 am 
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Hi Sam

Yes the meter is in series with power supply, so indicates current drawn, full scale is approx 14ma... It's indicating 11ma in the photo...


Tom


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 Post subject: Re: LM386N Xmitt In CM Satellite Meter
PostPosted: Nov Tue 20, 2012 9:58 pm 
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Joined: Mar Tue 30, 2010 2:24 am
Posts: 9167
Location: Lehighton, PA.
Very nice, I like that!

Larry

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