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Old June 6th 07, 03:29 AM posted to rec.radio.amateur.antenna
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Default Radio reception, fm,am

Proctologically Violated©® wrote:
...
*Finally* accomplished said task, and, big big bummer, the reception of the
car radio in my shop/garage is even worse than my home radios/stereos!
Yet, this *same radio*, when I used to park the car this very same garage,
had great reception.
...


Been decades since I have taken a car radio and placed it in a cabinet
with its' own speaker(s), power supply, etc. and created a "Miracle Kludge."

However, if I remember correctly, I found the same as you, poor
reception--until I tuned the antenna adjusting capacitor (was a hole on
the back of the radio turned with a screw driver.) It then turned out
to be the most sensitive am set I ever owned (well, for one without a
long-wire antenna attached.)

The antenna is part of an "antenna system" of which, the car body is a
part with much influence ... ditch the car body and you have to readjust
the antenna.

Regards,
JS

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Old June 6th 07, 04:01 AM posted to rec.radio.amateur.antenna
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Default Radio reception, fm,am

Good info.

You bring up another interesting point--
Just how is the radio itself connected to the car body/aerial antenna?
Simple ground?

So many wires going to this radio, not entirely clear what's going on.
What I thought was positive and negative wires turned out to be two
positives!!
And both necessary!
Hate to tell you how long it took to figure *that* out!
There are *two* ground wires, which look like shielded antenna wires. Who
knows.....

I will look for that tuning screw. Is it insulated?
--
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"John Smith I" wrote in message
...
Proctologically Violated©® wrote:
...
*Finally* accomplished said task, and, big big bummer, the reception of
the car radio in my shop/garage is even worse than my home
radios/stereos!
Yet, this *same radio*, when I used to park the car this very same
garage, had great reception.
...


Been decades since I have taken a car radio and placed it in a cabinet
with its' own speaker(s), power supply, etc. and created a "Miracle
Kludge."

However, if I remember correctly, I found the same as you, poor
reception--until I tuned the antenna adjusting capacitor (was a hole on
the back of the radio turned with a screw driver.) It then turned out to
be the most sensitive am set I ever owned (well, for one without a
long-wire antenna attached.)

The antenna is part of an "antenna system" of which, the car body is a
part with much influence ... ditch the car body and you have to readjust
the antenna.

Regards,
JS



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Old June 6th 07, 04:43 AM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Dec 2006
Posts: 1,154
Default Radio reception, fm,am

Proctologically Violated©® wrote:

The ground, for the antenna, was at the base of the old style
telescoping whip. The ground connection to the body was through the
mount on the whip, where the mount gripped the hole in the car body.

Insulated? No, it was a plain mica cap. The screw on cap was probably
chrome plated brass ...

I have wondered if the "in glass" antenna on the cars could be replaced
with the old whip and what sort of tuning was available on the new car sets.

On my buick park avenue, there is, what appears to be, an active
antenna--it is a little plastic box attached near the rear view mirror,
compass and gps.

I have seen some car radios which have been removed from autos and the
terminal strips with all the wire connections do appear as a nightmare.
I'd certainly desire a schematic and pin-out to tinker with one. I
never bothered to look for the antenna trimmer though ... perhaps you
must remove the case these days?

JS
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