[Lowfer] down and out low down
Eric Smith
[email protected]
Wed, 23 Apr 2003 20:08:37 -0500 (CDT)
While the audio final has been out in my GT-550, I've been able to use a
crystal earphone :)
Now, RF is out. I don't know if it is the front-end or the finals, but
the S-meter doesn't even move when I tune around. Dead as a doornail.
There are about two $500 expenditures I need to make before I'd feel very
good about spending $500 on a radio.
In about 15 minutes I can build a radio that will pick up the AM broadcast
band with an oatbox, a length of wire, a resistor, a 1N34, and my trusty
crystal earphone. Of course, those stations are 50,000 watts :)
But it looks like I could build a more complex circuit (with some RF
amplification and better selectivity) that would work BELOW 500 kc,
without going to the complexity of a synthesized tuner.
I have plenty of 365pf air variables :) and thousands of feet of telephone
wire.
Do any of you know where I might find such a circuit? Point me to a
schematic, and I'll build it!
Thank you,
Eric, KD5UWL, hurting BAD in EM25