[BVARC] HF Antenna Advice

Fri May 7 16:37:55 CDT 2021

Eric

Sorry, I should have mentioned that the chimney is brick. Years ago I had a satellite dish strapped to the chimney. That dish has been replaced years ago, but the strapping is still attached and I planned to use that strapping to hold up a pulley for the antenna.

David

David Mehl
Houston TX USA

From: BVARC <bvarc-bounces at bvarc.org> On Behalf Of Eric Weder via BVARC
Sent: 7 May, 2021 3:23 PM
To: BRAZOS VALLEY AMATEUR RADIO CLUB <bvarc at bvarc.org>
Cc: Eric Weder <Eric.Weder at weder.ca>
Subject: Re: [BVARC] HF Antenna Advice

You didn’t mention what your chimney is constructed from ... brick, stone, galvanized steel???
Sent from my iPhone

On May 7, 2021, at 16:16, Jeffrey Carson via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:

What "warnings" did you read about using a chimney for a mount. Never actually heard of any myself. Is it about it not being sturdy or something else?

On Friday, May 7, 2021, 03:12:02 PM CDT, MIKE BRANNAN via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:

Years ago I used steel strapping around my chimney to hold a heavy dipole with large traps. Worked fine. Even went though several high wind events.  One removed a large portion of the roof.
Sent from my iPhone

On May 7, 2021, at 1:14 PM, Karl Bernard via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:

David,

I wouldn't think that a dipole of any kind would put too much of a strain on your chimney. Even with the balun, that one only weighs 1.2lb (per DX Engineering - https://www.dxengineering.com/parts/mfj-2010<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.dxengineering.com%2Fparts%2Fmfj-2010&data=04%7C01%7C%7C2337abaf29f44fec21b008d9119a7294%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637560177319159414%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=jSBiBl79g92zndGzScp0wa6oYES0b1OFSrzGhaTyPMc%3D&reserved=0>).

Since whatever you use as a mount will weigh more than the antenna, just be sure to use a lightweight mount.

Disclaimer - this only my opinion. I've never mounted an antenna on a chimney before.

Thanks,

Karl
W5KMB

On Fri, May 7, 2021 at 12:43 PM David Mehl via BVARC <bvarc at bvarc.org<mailto:bvarc at bvarc.org>> wrote:

BVARC Club

I am a new ham and a club member since I passed my Tech last August at the BVAC testing. I have also passed both my General and Extra exam about a month ago. I am working on setting up a HF radio for home. I have a ‘backordered’ IC-7300 which may show up one day. In the mean time, I am trying to plan for my HF antenna that will fit on my small lot.   I think I can run an 40-20-10-6 OCFD (*MFJ-2010) in a slope from a tree in my front yard, with the feed point hung off a mounted on chimney, and then on to a post above my fence in my backyard. I don’t have any trees in my backyard. Instead I have power lines across the back of the lot that I have to avoid.

I keep reading various comments and warnings about using a chimney for a mount. My chimney is in good repair, having been inspected and repaired during my home rebuilt after being flooded during Harvey.

Is the center of the OCFD a light enough load to consider using my chimney as a center mount? Is there a right way to do that? Or should I ‘bite the bullet’ and setup a pole beside the chimney?

Any other antenna advice for a novice?

Thanks

AI5DK

David

David Mehl / Houston Texas USA / dcmehl at live.com<mailto:dcmehl at live.com>

________________________________________________
Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC at bvarc.org<mailto:BVARC at bvarc.org>
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmail.bvarc.org%2Fmailman%2Flistinfo%2Fbvarc_bvarc.org&data=04%7C01%7C%7C2337abaf29f44fec21b008d9119a7294%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637560177319159414%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=XlgJ9aYV%2FLDVgX%2FZNTeCzYU4xF%2F2G%2BRNh6Pfc%2FZOqws%3D&reserved=0>
Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fbvarc%40bvarc.org%2F&data=04%7C01%7C%7C2337abaf29f44fec21b008d9119a7294%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637560177319169368%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=xOQ6WuuS9SJUjHjxdloIt3bWcJpvOks9Y2wbwLaEI7A%3D&reserved=0>
________________________________________________
Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC at bvarc.org<mailto:BVARC at bvarc.org>
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
________________________________________________
Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC at bvarc.org<mailto:BVARC at bvarc.org>
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmail.bvarc.org%2Fmailman%2Flistinfo%2Fbvarc_bvarc.org&data=04%7C01%7C%7C2337abaf29f44fec21b008d9119a7294%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637560177319169368%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=xCud4FiibJPyrwbfGtRYeztrvExFSuw66%2FKh4JIlzPE%3D&reserved=0>
Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fbvarc%40bvarc.org%2F&data=04%7C01%7C%7C2337abaf29f44fec21b008d9119a7294%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637560177319179323%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=sVLcAC0E%2Bzol1mKUs1hxsDO8mcateg4caxSPoSze974%3D&reserved=0>
________________________________________________
Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC at bvarc.org<mailto:BVARC at bvarc.org>
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.bvarc.org/pipermail/bvarc_bvarc.org/attachments/20210507/4133fc06/attachment.htm>