Thank you very much Mark. That was a lot of great info. You solved more than 
one potential problem I face.

Have a good day,
Mike

On Apr 22, 2021, at 6:00 PM, Mark Brantana <[email protected]> wrote:

 I think you have mentioned a key thing. They likely already have made 
allowance for a tv antenna. Your HOA rules may tell you what is allowed there. 
If so, I would consider mounting a j-pole there. If you want to play it safe or 
cut the cord, as we did, you can mount a tv antenna there (and mount a j-pole 
underneath).

Also, I found it convenient to install a gooseneck on the roof. It is no more 
leak prone than any of the many other vents you already have, but it needs to 
be installed correctly. This way you can allow for as many lines as you want to 
the roof without having to go around a gutter, or some other strange 
configuration. It also saves you from running a lot of unnecessary coax. I have 
two coaxes and one tv cable running through mine. I have experienced no 
troubles whatever, but I thought about this for several months before I did it. 
It is really a good solution.

Only thing then you have to consider is how you are going to ground the antenna 
for lightning, etc. Look at installing an MFJ-270 or similar, but you also 
should provide a ground for the antenna itself to cover against normal induced 
charge buildup.

That said, unless you have radiant barrier, there is no apparent reason why the 
j-pole will not work in your attic. For HF, I worked the western hemisphere on 
10 meter in cycle 22 with a slinky antenna. I think it took four slinky’s.

There are many other possible solutions, but they are situational and will not 
work for everyone. The fun of ham radio is exploring these kind of puzzles.

Mark
N5PRD





On Apr 22, 2021, at 4:42 PM, Mike Lambert via BVARC 
<[email protected]<mailto:[email protected]>> wrote:


David, I have a hip roof so there is not much area with a vertical height of 
70".
I forgot about the metal AC plenum that crosses right in 'front' of the 
proposed antenna location. Antenna blocked!

Unfortunately I was working from memory when I thought of this attic idea.  Now 
that I got up there with a tape measure.... ooops!
Ok, the antenna will go outside somewhere, I just need to make that happen. <g>

Mike
KI5PIY

On 4/22/2021 4:14 PM, David Holden via BVARC wrote:
Why did you scrap the attic location? I have mine in the attic and it works 
great.

David, KI5GHO

On Thu, Apr 22, 2021 at 1:39 PM, Mike Lambert via BVARC
<[email protected]><mailto:[email protected]> wrote:
My initial (easy) plan to put my J Pole in my attic, but is has been
scrapped.

Temporarily I've decided to put my antenna outside my office and run the
feed line through window until I decide on a more permanent antenna
location (an HOA will be involved) and how to get the feed line into the
(brick) house. I will have to put up/take down the antenna when I use it.

Does anyone have any suggestions on a good mast that I can put up
temporarily and take down when not in use.

73s

Mike
KI5PIY




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