Question about feedline proximity
 

There's a particular spot at my home QTH that would be good for a
transmit antenna for 2 meters / 70 cm. Right now I'm picturing a j-
pole made of copper tubing in that spot. The only hitch is that one 20
to 25 ft long section of the coax feedline to this antenna will need
to run parallel to the coax feed to my hf receive-only loop. Within
this 20-25 ft long span, the feedlines would be separated by about a
foot.

How concerned should I be about this, given that I'll probably never
be using be using these antennas at the same time. I'm guessing the
effects would be negligible. Am I wrong?

Question about feedline proximity
 

On Sat, 27 Oct 2007 18:59:40 -0700, Steve
wrote:

There's a particular spot at my home QTH that would be good for a
transmit antenna for 2 meters / 70 cm. Right now I'm picturing a j-
pole made of copper tubing in that spot. The only hitch is that one 20
to 25 ft long section of the coax feedline to this antenna will need
to run parallel to the coax feed to my hf receive-only loop. Within
this 20-25 ft long span, the feedlines would be separated by about a
foot.

How concerned should I be about this, given that I'll probably never
be using be using these antennas at the same time. I'm guessing the
effects would be negligible. Am I wrong?

You're OK as long as it's one or the other.

Question about feedline proximity
 

On Oct 30, 3:55 pm, "Dale Parfitt" wrote:
"David" wrote in message

...





On Sat, 27 Oct 2007 18:59:40 -0700, Steve
wrote:

There's a particular spot at my home QTH that would be good for a
transmit antenna for 2 meters / 70 cm. Right now I'm picturing a j-
pole made of copper tubing in that spot. The only hitch is that one 20
to 25 ft long section of the coax feedline to this antenna will need
to run parallel to the coax feed to my hf receive-only loop. Within
this 20-25 ft long span, the feedlines would be separated by about a
foot.

How concerned should I be about this, given that I'll probably never
be using be using these antennas at the same time. I'm guessing the
effects would be negligible. Am I wrong?

- - You're OK as long as it's one or the other.

- What would be the outcome if both were used simulataneously
- and why.
- Dale

Dale [W4OP],

IF - By the same operator at the same time -possibly-
a state-of-confusion on the part of the operator :o) ~ RHF

Question about feedline proximity
 

On Tue, 30 Oct 2007 16:15:35 -0700, RHF
wrote:

On Oct 30, 3:55 pm, "Dale Parfitt" wrote:
"David" wrote in message

...





On Sat, 27 Oct 2007 18:59:40 -0700, Steve
wrote:

There's a particular spot at my home QTH that would be good for a
transmit antenna for 2 meters / 70 cm. Right now I'm picturing a j-
pole made of copper tubing in that spot. The only hitch is that one 20
to 25 ft long section of the coax feedline to this antenna will need
to run parallel to the coax feed to my hf receive-only loop. Within
this 20-25 ft long span, the feedlines would be separated by about a
foot.

How concerned should I be about this, given that I'll probably never
be using be using these antennas at the same time. I'm guessing the
effects would be negligible. Am I wrong?

- - You're OK as long as it's one or the other.

- What would be the outcome if both were used simulataneously
- and why.
- Dale

Dale [W4OP],

IF - By the same operator at the same time -possibly-
a state-of-confusion on the part of the operator :o) ~ RHF
.

One will couple into the other. Whether this matters is subject to
investigation.

Question about feedline proximity
 

On Nov 1, 6:55 am, David wrote:
On Tue, 30 Oct 2007 16:15:35 -0700, RHF
wrote:





On Oct 30, 3:55 pm, "Dale Parfitt" wrote:
"David" wrote in message

. ..

On Sat, 27 Oct 2007 18:59:40 -0700, Steve
wrote:

There's a particular spot at my home QTH that would be good for a
transmit antenna for 2 meters / 70 cm. Right now I'm picturing a j-
pole made of copper tubing in that spot. The only hitch is that one 20
to 25 ft long section of the coax feedline to this antenna will need
to run parallel to the coax feed to my hf receive-only loop. Within
this 20-25 ft long span, the feedlines would be separated by about a
foot.

How concerned should I be about this, given that I'll probably never
be using be using these antennas at the same time. I'm guessing the
effects would be negligible. Am I wrong?

- - You're OK as long as it's one or the other.

- What would be the outcome if both were used simulataneously
- and why.
- Dale

Dale [W4OP],

IF - By the same operator at the same time -possibly-
a state-of-confusion on the part of the operator :o) ~ RHF
.

One will couple into the other. Whether this matters is subject to
investigation.- Hide quoted text -

- Show quoted text -

A greater issue then the 'proximity' of the two FeedLines may
be the 'proximity' of the two Antennas -If- both Antennas and
FeedLine Systems are used at the same time. ~ RHF