Did you take the guts from an AA 5 and just move it up?
That's the idea, with a few mods such as pulling plates and a series
cap to get a better tuning bandspread. I wanted the antenna tracking
to still work so I wouldn't need a front panel antenna trimmer control
- that seemed challenging. But as I removed plates from the antenna
section of the cap, and turns from the antenna coi, I got to a point
where the parallel trimmer dominated at one end of the band, and the
variable cap at the other, causing a broad double-humped response on
the antenna peaking that worked out well for the 1800 and 1900 kHz
sections of the band.
Steve WD8DAS
[EMAIL PROTECTED]
http://www.wd8das.net/
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Radio is your best entertainment value.
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-----Original Message-----
From: Bry Carling <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]; [email protected]
Sent: Mon, 27 Oct 2008 6:04 am
Subject: Re: GB> 160m AM receiver project
What a great idea.
Did you take the guts from an AA 5 and just move it up?
I think I have one here that would make a great candidate for
such a project too... a friend of mine gave it to me a few
months back but I am not sure what tubes / circuitry it has.
Love the dial and the perf metal!
73 - Bry, AF4K
My 160m AM receiver project is done. It was based on parts from a
Zenith 5-tube broadcast radio (actually the same model as our family
kitchen table radio when I was a little kid) but I pulled variable
cap
plates and
added a few parts to move it up to 160m and create a better
band-spread
across the dial. I was also able to get a double-humped response on
the
antenna tracking and avoid the need for a front panel antenna trimmer
control.
http://www.wd8das.net/160mRX/160mRX.html
The picture of the front panel was snapped at the moment it was
receiving
one of the crew on 1985 kHz. The signal was about S9+15dB on my other
receivers.
Steve WD8DAS
[EMAIL PROTECTED]
http://www.wd8das.net/
---------------------------------------------------
Radio is your best entertainment value.
---------------------------------------------------
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