It is currently Sat Dec 15, 2018 8:03 am

Click the link below to visit the site sponsor

The Ham Radio Shop




Post new topic Reply to topic  [ 4 posts ] 
 80 / 40m ocf 
Advanced Member

Joined: Mon Mar 09, 2015 5:31 pm
Posts: 223
Location: Dunstable, Io91 rv
Feedback: 16 (100%)
Reply with quote
Post 80 / 40m ocf
I’m currently using a end fed wire with 9:1

Fed 8 ft above ground other end is 40ft.

Wire is 23m, works ok, to be fair I have nothing to compare it to.

Would I benefit from a ocf dipole in sloping configuration.

Highest point 40ft, fed again 8ft above ground and other end also 8ft.

Not ideal height I know but I have a decent length garden but need to compromise with neighbours etc.

Many thanks Paul


Sun Mar 04, 2018 4:47 pm
Profile Send private message

 80 / 40m ocf 
Contributor 2017
User avatar

Joined: Wed Oct 30, 2013 2:47 pm
Posts: 1344
Location: Llanwrtyd Wells
Feedback: 17 (100%)
Reply with quote
Post Re: 80 / 40m ocf
It sounds like you are using an end fed sloper, but considering an offset fed inverted V?
You will need a different balun, either a 4:1 current, or try a 4:1 voltage and choke the co-ax before it reaches the ground, and fed about 1/4 to 1/3 of the way from one end. Not sure of your layout, assume you use a matcher rather than wanting something resonant, and have a 40 foot support part way down the garden?

_________________
The Devil take your stereo and record collection.


Sun Mar 04, 2018 10:14 pm
Profile Send private message WWW

 80 / 40m ocf 
Advanced Member

Joined: Mon Mar 09, 2015 5:31 pm
Posts: 223
Location: Dunstable, Io91 rv
Feedback: 16 (100%)
Reply with quote
Post Re: 80 / 40m ocf
Thanks for the reply.

Yes using a end fed slipper currently, considering an ocf dipole for 80/40 plus other bands with the built in tuner on my k3.

Would still be a sloper configuration, I’m wondering if I’d bennift from this, I can’t get the wire up much higher than 8-10 ft lowest and 40 ft highest.

I enjoy 80/40m the most, not interested in dx from Home because of the restrictions.

Bearing in mind I have no counterpoise on the end fed, I could add 20m of wire to the braid of the coax, just an example,

1/4 wave of 80m ???

Cheers Paul


Tue Mar 06, 2018 8:41 pm
Profile Send private message

 80 / 40m ocf 
Contributor 2018
User avatar

Joined: Sat Jan 19, 2013 12:30 pm
Posts: 877
Location: Manchester
Feedback: 13 (100%)
Reply with quote
Post Re: 80 / 40m ocf
viewtopic.php?f=43&t=89767

_________________
G4WLI (G8IKW) Peter
Education officer, West Manchester radio Club http://www.wmrc.co.uk/


Tue Mar 06, 2018 8:48 pm
Profile Send private message WWW
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © phpBB Group.
Designed by Vjacheslav Trushkin for Free Forums/DivisionCore.