RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > Amateur Radio > Amateur Radio Antennas

Amateur Radio Antennas For discussion of all amateur band designed antennas and related accoutrements. This includes base, handheld, mobile and repeater usage. For commercial antennas on the amateur bands please use Commercial Radio Antennas below.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 03-13-2014, 6:29 PM
wbswetnam's Avatar
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Oct 2005
Location: Vulture Gulch, Arkansas
Posts: 315
Default 17m/6m dipole

I have read that if a dipole antenna has an element cut for 17m, this same dipole can be used for 6m also (adjusted with an antenna tuner of course). But, the 1:1 current balun I have is rated for 1.8 to 30 MHz. So, am I out of luck in using the 17m dipole for 6m work?
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 03-13-2014, 8:06 PM
davenlr's Avatar
Member
  Premium Subscriber
Premium Subscriber
Amateur Radio Operator
Amateur Radio
 
Join Date: Jan 2014
Location: North Little Rock, Ar
Posts: 635
Default

a quarterwave at 18 MHz would work as a 3/4 wave on 54 MHz, so yep, that should work. As for the balun you could make one out of coax that should work for both bands. I would try the 1.8-30 one you have at real low power, just to see what the SWR is...who knows, it might work. And if its only for receive, just leave the balun off. I never use a balun for my dipoles, and transmit up to 1200W with no issues, equipment wise.
__________________
Scanners: BCD536HP BCD436HP BCT15
Ham: HTX-212 Yaesu 757 Kenwood B2000
Reply With Quote
  #3 (permalink)  
Old 04-01-2014, 6:15 AM
Member
   
Join Date: May 2009
Posts: 1,710
Default

You can just add additional ferrite chokes rated for use up at 6M. Radio Shack #273-105 snap-on chokes are rated for 30-300mhz. I'd use at least 4 of them.

I've added these to my own 3-30 mhz chokes, as I find that in some cases, they really don't provide much impedance beyond 25 mhz or so. The type 43 chokes like the RS pick up the slack from about 25 mhz and up, so I snap a few on beyond the existing HF choke for antenna situations just like yours.
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 7:20 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2011 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions