Newbie Questions On Receiving Only Antenna Installation
 

Hi,

Some probably dumb questions, but am a bit of a beginner with all of this.

Will be putting up an otside sloper or inverted L.

Receiving only.

a. If I run the antenna wire thru a closed metal loop for fastening
purposes, do I run into any effets from having a
"shorted turn" over the active antenna wire (receiving only) ?

b. Any problem if I coil up a bit of the excess wire, perhaps a foot or
two, into a 6" loop at the end ?
Guess I'm asking about it becoming an added inductor due to the coil.

Thanks,
B.

Newbie Questions On Receiving Only Antenna Installation
 

Robert11,
In general, and depending on the frequencies you want to listen
to, the answers to your questions is probably 'No'. Shouldn't be
a problem.
'Doc

Newbie Questions On Receiving Only Antenna Installation
 

On Fri, 13 Jan 2006 07:47:40 -0500, "Robert11"
wrote:

a. If I run the antenna wire thru a closed metal loop for fastening
purposes, do I run into any effets from having a
"shorted turn" over the active antenna wire (receiving only) ?

Hi Bob,

Some. By the degree of the metal's resistance. It would take a very
serious degree to be noticeable. Hence Doc's suggestion of probably
"No" stands.

b. Any problem if I coil up a bit of the excess wire, perhaps a foot or
two, into a 6" loop at the end ?
Guess I'm asking about it becoming an added inductor due to the coil.

Also called a choke. It can help at some frequencies and impede at
others (too many details left unsaid by you). Again, from what you do
say, probably "No" still stands.

73's
Richard Clark, KB7QHC

hello B

answers depend on are you using insulated or uninsulated wire
if using uninsulated wire you will want a insulator between the wire
and the "closed metal loop for fastening"
coiled up excess wire is no real prob excpt
if its uninsulated and the turns rub each other
just cut off the excess wire
if its insulated wire don't worry

wire hf receive antennas like a sloper or inverted L are very forgiving
realy can play around with it and not degrade how well it will receive
for most wire antennas, I use THHN # 14 gage stranded insulated house wire
sells cheap at home owners hell
wire antennas for receive are fun to play with
don't worry
just stay away from the power lines and you will be ok

yours truly Mac w8znx

Newbie Questions On Receiving Only Antenna Installation
 

Rob, you are unnecesarily complicating matters.

Either you can have lightning strikes in the vicinity of your antenna
or you can have a direct antenna lightning strike.

You can completely separate antenna design from the effects of
lightning. Just erect your antenna according to required radiating and
receiving properties. Inverted-L's and dipoles are simple enough.

If you expect lightning strikes in the vicinity then all you can do is
place a lighning arrestor in the coaxial feedline. Or from each of the
wires of a twin, balanced feedline down to ground. In the case of a
nearby lightning strike, this can do much to protect your radio
equipment but will not guarantee complete protection.

In the case of a direct lightning strike on the antenna there's
nothing you could have done to prevent it. Absolutely anything can
happen to your antenna, equipment, or anything else in your premises.
Including yourseslf. Just assess the extensive damage and inform your
insurance company.

On the other hand, don't completely disregard the hints and tips you
may receive from other conributors to your query on this newsgroup.
But it's all a matter of probability and chance.
----
Reg.