Jump to content
  • 0

High SWR and reflected power using repeaters


jsouth

Question

Recently installed a Browning BR-6146 in my attic. I used 1/2 heliax 55 feet and Belden 9914 as the jumpers to and from the heliax. All connectors are N except at the radio(PL-259 for Midland MXT-400). SWR is great across the board (never more than 1.07), until I get to repeaters. Then the SWR jumps to 1.35 and almost to 1.95 on higher power output applications. The reflected power is high as well.

My question is: is this a result of the installation being in an attic? Or is this Browning some type of Jpole that needs ferrite magnets or a coil of wire at the antenna to remedy?

Link to comment
Share on other sites

5 answers to this question

Recommended Posts

  • 0

The antenna should work fine. Do you have asphalt shingles? Some folks have metal roofing and/or trim and overlook that. Especially flashing materials and face boards.

 

Make sure the antenna is at least 6 feet away from any metal or electrical lines. That includes any metal outside on the roof and side of the house.

Link to comment
Share on other sites

  • 0

The antenna does seem to work fine. I just find it odd that I got that result. I have asphalt shingles, no metal on the roof, and a UHF TV antenna that’s about 10 feet away. It’s also mounted very high as I have a steep roof pitch that allows me to get it up as high as I can reach. I just like knowing how and why things work. Thank you for the input.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Guidelines.