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  improve fm reception on transistor radio         


Author: Uncle Scotty
Date: Mar 15, 2008 16:14

I bought this old-fashioned style radio from LL Bean to listen to a
Prairie Home Companion on.

http://www.llbean.com/webapp/wcs/stores/servlet/CategoryDisplay?page=crosley-radio&categoryId...

It is broadcast locally on PBS radio, but I am in an apartment and am
not getting strong reception. Beyond moving the radio (which I have
tried to several locations) is there anything else I can do to improve
it?

Thanks, Scott
7 Comments
  The N8WWM archives         


Author: dougay patrol
Date: Mar 15, 2008 12:46

6 Comments
  Incoming radio wave polarisation         


Author: Art Unwin
Date: Mar 15, 2008 08:52

I have on order a tilting system for my antenna to probe the
polarisation of incoming signals
for maximum audio clarity and gain.
There are instruments out there that can automatically tell you the
polarisation
without one taking the trouble to pan the antenna in different
directions.
Anybody out there follow such a procedure with the antenna or use a
homebrew
or commercial instrument to save time?
Regards
Art
48 Comments
  Re:Cobwebb Homebrew         


Author: Barrett
Date: Mar 15, 2008 04:43

Hi

I am in the process of building a Cobwebb Homebrew and have a question about
it.

On the one I'm building the gap at the ends of the element for each band are
all different. I have also just come across one built by M0MMR that has all
the gaps set at 3 inch's.

Does one antenna work better than the other?

Many thanks
11 Comments
  Do receiver antennas need matching or not?         


Author: billcalley
Date: Mar 15, 2008 04:11

Hi All,

I always hear that antennas have to be matched to their radio, but
in receivers (such as FM and shortwave radios) I see mostly long
random length antennas used, and these antennas -- be they a
telescoping whip or a long wire out a window -- are used over some
really wide bandwidths. How is this possible if an impedance match
must always be maintained for radios? And since there cannot be a
good match over such wide bandwidths with any (typical) wire antenna,
what is the downside to using these completely unmatched long antennas
for receivers? (Poor gain patterns with lots of nulls? Lower
sensitivity due to bad noise figure or gain match for any LNA or
frontend amp? Degraded overall antenna gain)?

Thanks; I'm very confused on this subject!

-Bill
55 Comments