Jack - here's a quick set-up that will give you 'real' data - as opposed to the Aural Objectivity of your fellow hams.
Use your light-bulb and SWL recieveras before. Hook a VTVM to the reciever's output - speaker, headphones, no matter as long as you can get a comfortable reading of the audio output.
Hook an audio generator (thru a suitable resistor 'pad) to the Ranger in place of the D104.
Put the generator at, say, 1 KHtz, tune up the Ranger, set the 'audio' control for a good reading on the meter, and then set the reciever audio to give a "midscale" reading on the VTVM. (Don't drive the Ranger too hard - this will be a long period of "key-down" operation at 75 or 100% modulation. Be nice to them 1614s....)
Now, without making any adjustments whatsoever, tune the generator freq down to, say, 50 htz., and note the VTVM reading. Then up to 60 Htz, note the reading. Then 120 Htz, then 240, then 480 etc etc up to about 4K or so.
If you really want to get 'scientific' - do the same test but with the Kenwood. That will 'calibrate' what is due to the Transmitter and what is due to the Reciever audio bandpass characteristics.
Now you'll have a real idea of what the Audio bandpass 'looks' like. Cheers John KB6SCO ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
