RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > Scanners, Receivers and Related Equipment Forums > Antennas and Associated Hardware > Scanner / Receiver Antennas


Scanner / Receiver Antennas - For discussion of any type of receiving antenna used by a scanner or receiver base, mobile or handheld.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 10-12-2017, 10:08 PM
scanmanmi's Avatar
Member
   
Join Date: Sep 2011
Location: Central Michigan
Posts: 128
Default Curley Q's

I've seen some antennas with Curley Q's on them. Is that just psychological or does that help?
__________________
Second place is the first loser.
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 10-12-2017, 10:44 PM
W8RMH's Avatar
Member
  Audio Feed Provider
Audio Feed Provider
Amateur Radio Operator
Amateur Radio
 
Join Date: Jan 2009
Location: Grove City, Ohio (Bearcat not a Buckeye)
Posts: 6,869
Default

It definitely helps. Basically, it makes a short antenna resonant at its operating frequency.
__________________
SKYWARN SPOTTER Unication G4 BCD436HP-DMR Home Patrol 2 BCD996XT BR330T
Columbus Police Dispatch - Citywide (Ohio MARCS P25)
Reply With Quote
  #3 (permalink)  
Old 10-13-2017, 2:41 PM
cmdrwill's Avatar
Member
   
Join Date: Mar 2005
Location: So Cali
Posts: 2,577
Default

Curley Q's, think of them as loading or matching coils that make the two or more straight antenna parts work together. Also known as open coil antennas.
Reply With Quote
  #4 (permalink)  
Old 10-13-2017, 5:30 PM
Member
   
Join Date: Jun 2006
Posts: 6,022
Default

Most curly Qs are found on stacked colinear vertical antennas as the 1/4 wavelength phasing (90 deg phase shift) between radiators. As an example you might find a half wave over a half wave or 5/8 over 5/8 wave and an air wound 1/4 wavelength coil in the middle to place the top antenna in phase with the bottom. There are a few antennas out there that are a simple loaded 1/4 wave vertical and the loading coil is an exposed curly Q but those are not as polular these days.
prcguy
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:00 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2015 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions