Topband: Raised radial question from NH

[Jim F.]

Thank you Charlie,

In that case I may be able to get another raised radial up before the action begins
later this afternoon.

A receiving antenna is a definite possibility also especially if one could be
rigged to go up and down easily. Good idea.

Thanks again Charlie.

Jim / W1FMR



On Saturday, October 19, 2013 12:38 PM, Charlie Cunningham <charlie-cunningham at nc.rr.com> wrote:
 
Hi, Jim

In my experience, the answer is "no" to both questions - although a full
size inverted L , while being a very effective transmit antenna can be a
really noisy receive antenna. Can you go out in the woods and hang a flag,
pennant or KAZ terminated loop for a receive antenna? Helped me a LOT o RX!

Good luck!

73,
Charlie


-----Original Message-----
From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Jim F.
Sent: Saturday, October 19, 2013 12:28 PM
To: top Band; Jim Fitton
Subject: Topband: Raised radial question from NH

Nothing heard this morning in NH at 1530Z.

Am in a condo environment where invisibility is a factor.
Antenna is an Inverted L  fed through a series capacitor with two #22
ga. raised radials 136' long ~ 10 feet high running through the woods
which have stayed up 2 days so far.

One question :

Do you think that thin radials could cause an increase in receiver noise ?

Another question :

The 50 ohm feedline line is 25' long connected directly to the rig.
Is isolation needed to preserve the effectiveness of raised radials ?
If so, what would the isolation consist of ?

73

Jim / W1FMR / QRP
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Topband Reflector