Jump to content
  • 0

Laird 5db ground plane or Laird 5db no ground plane?



I just bought a 2021 Silverado 2500HD and want to put my radio in it.  Instead of dropping the headliner im going to put a back Rack on it and put a Laird BB4505CR (requires ground plane) or a BB4505CNS (no ground plane). Both are 5db gain. If I used the BB4505CR that requires a ground plane. I would have to make a plate to put it on. If I remember it requires a 7" ground plane. Would 7" be best or if I made it 10" would that be better?  or I could just cut a 3/4" hole in the middle of the back rack and use a BB4505CNs no ground plane. 

Link to comment
Share on other sites

3 answers to this question

Recommended Posts

  • 0

Generally, a no ground plane antenna will work better then one requiring one and fabbing one.


A no ground plane antenna will work even better with some ground plane available.


I would do the 10". Make sure the rack has continutiy to the bed and cab. In which case make increase the available groundplane.


I would expect some radiation pattern biases due to proximity of other metal surfaces ie, cab, bed trunks and the bed.

Link to comment
Share on other sites

  • 0

Pretty much. Had some what the same problem with my burb. The sunroof slid so far back it limited some options.


So even a mag mount might work better then a permanent install. Some options on your truck. But even then everything is going to be a compromise of sorts.


Sent from my SM-G975U using Tapatalk

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.

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.