Charlie Tango 11m DX Radio Group Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.


Welcome to the Charlie Tango DX Group. The home of ALL things Radio - CB, 11m DX, Amateur, PMR446, PLD, Network and Data. We welcome all radio enthusiasts of all knowledge levels. Join today and claim your own unique World Famous CT Call-sign
 
HomeEventsCalendarFAQSearchRegisterLog in

Navigation
Useful Radio Sites
Log in
Username:
Password:
Log in automatically: 
:: I forgot my password
CT Bill Board





Views This Year
All Time Views
Classified Adverts

Latest topics
» VHF Contacts - 6m (50MHz) band
HF verticals Icon_minitimeToday at 4:51 pm by TrunkY

» HF Contacts 10m
HF verticals Icon_minitimeToday at 4:50 pm by TrunkY

» Hi everybody
HF verticals Icon_minitimeToday at 4:02 pm by Victor

» HF Contacts 15m
HF verticals Icon_minitimeToday at 3:59 pm by Sydthecat

» Hello and a call sign request
HF verticals Icon_minitimeToday at 12:49 pm by alfmouse

» Upright V antenna
HF verticals Icon_minitimeToday at 9:33 am by Victor

» hello all and callsign request (Issued)
HF verticals Icon_minitimeYesterday at 2:06 pm by Victor

» New shack on the way.
HF verticals Icon_minitimeYesterday at 6:35 am by Alan Pilot

» Project: PC-ALE or JS8Call NVIS HF Antenna + SGC-235 + FT-847
HF verticals Icon_minitimeYesterday at 12:24 am by Wireless

Keywords
Mckinley frequency lincoln power callsign SS6900 6900 antenna anytone Calling display midland call sign ss9900 list bazooka 9900 ALINCO coax yaesu Sirio Mobile ss6900n radio president
QRZ Database

 

 HF verticals

Go down 
4 posters
AuthorMessage
Swadeyboy
Contributor
Contributor
Swadeyboy


Call Sign : 26-CT-3743
Posts : 58
Times Thanked : 0
Join date : 2020-07-23
QTH or Location : Chingford London
Equipment Used : Yaesu FT450D and Sigma SE HF360 vertical

HF verticals Empty
PostSubject: HF verticals   HF verticals Icon_minitimeSun Aug 30, 2020 9:55 pm

Anyone else out there using a multiband HF vertical, i currrently have a Sigma SE HF360 vertical which covers 10-80mtrs @1:1 but won't SWR on 11mtr
Back to top Go down
View user profile
Victor
CT Directors
CT Directors
Victor


Call Sign : 26-CT-3228 Ham M7VIC
Posts : 2686
Times Thanked : 185
Join date : 2019-11-10
QTH or Location : Bedford
Equipment Used : Various

HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitimeSun Aug 30, 2020 11:30 pm

Hi Wade,

I couldn't find out a whole lot about this antenna apart from the typical sales literatures.
From the basics I could find it's a 17ft element with a 6:1 balun and seems to resonate as a quarter wave on 20m judging by it's impedance range. It does to me seem like the typical 'compromise' antenna as in, sort of does almost everything but not very well.
The literature does state the use of an external ATU or matcher so I would presume that it's SWR range goes beyond 1:3 which a lot of rigs with inbuilt ATUs, (such as your FT450d), won't manage.

Taking from that, it's too short as a half wave for 11m and may be part of your problem with a high SWR at that point.

I hate it when an antenna is advertised as being from 'x'MHz to 'y'MHz when they really mean 'sort of in some of that range' with terrible points on non-resonance. But that said, it is advertised as a Ham antenna rather than a CB antenna.

Sorry that's not too happy an analysis for you but the best I could figure.


All the best,
Victor

Tristar likes this post

Back to top Go down
View user profile https://www.qrz.com/db/M7VIC
Northern Crusader
Major contributor
Major contributor



Call Sign : M0GVZ / 26CT1760
Posts : 428
Times Thanked : 32
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 51

HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitimeWed Sep 02, 2020 5:57 pm

Usually with these multiband antennas using a specific length of wire/metal tube and ratio of Unun/Balun it's because it'll give usable SWR dips in the amateur bands but outside of those it'll be horrendous. Whilst it would be possible with a decent enough tuner to force it to work on 11m you'd cook the toroid in the UNUN that is the matching circuit this antenna uses.

Swadeyboy likes this post

Back to top Go down
View user profile
Swadeyboy
Contributor
Contributor
Swadeyboy


Call Sign : 26-CT-3743
Posts : 58
Times Thanked : 0
Join date : 2020-07-23
QTH or Location : Chingford London
Equipment Used : Yaesu FT450D and Sigma SE HF360 vertical

HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitimeWed Sep 02, 2020 8:45 pm

your replies make perfect sense, thanks.

i am still working on a resolution to my dilemma, will update this page.
Back to top Go down
View user profile
Northern Crusader
Major contributor
Major contributor



Call Sign : M0GVZ / 26CT1760
Posts : 428
Times Thanked : 32
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 51

HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitimeSun Sep 06, 2020 3:29 pm

Screwdriver antenna such as a Tarheel using a 9ft whip. That'll tune everything from 160/80m to 10m.

Or...

SGC230/CG3000 tuner, gut the matching section out of your HF360 and connect the "hot" side of the SGC to the antenna bit of the HF360 and the ground lug to the pole it's mounted on. That'll tune everything continuously from 160m to 6m with no gaps and it'll be probably more efficient than the HF360 as it is.

The SGC230 manual has many examples of wire antennas you can use with it. It needs power but you can use Bias T's at each end of the coax going to it to feed 12V DC up the coax.

Swadeyboy likes this post

Back to top Go down
View user profile
Swadeyboy
Contributor
Contributor
Swadeyboy


Call Sign : 26-CT-3743
Posts : 58
Times Thanked : 0
Join date : 2020-07-23
QTH or Location : Chingford London
Equipment Used : Yaesu FT450D and Sigma SE HF360 vertical

HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitimeSun Sep 06, 2020 4:23 pm

Bloody hell. 
.
There ain't half some clever geezers.

I am going to look into the SGC230.

The CT Forum just keeps on giving.

Thank you.
Back to top Go down
View user profile
DV1701
New Member
New Member
DV1701


Call Sign : 26-CT-3520
Posts : 11
Times Thanked : 0
Join date : 2020-05-04
QTH or Location : Telford, Shropshire
Equipment Used : Uniden 100 & 200. SS6900N, Yaesu FT8900, Alinco DX77E & MFJ 939 Matcher

HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitimeTue Sep 08, 2020 1:31 pm

I've got the Moonraker GPA 80F which is oh so similar. I use it on HF and on 11m and my Alinco DX77 and MFJ 939 Auto tuner handles it with ease on AM, FM & SSB and gets the SWR down to 1.5 or lower across all bands from160m to 10m. Get yourself a Matcher (also known as a Tuner) such as an MFJ and all will be well.

Good luck

Swadeyboy likes this post

Back to top Go down
View user profile
Sponsored content





HF verticals Empty
PostSubject: Re: HF verticals   HF verticals Icon_minitime

Back to top Go down
 
HF verticals
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
Charlie Tango 11m DX Radio Group Forum :: Help and Discussion Forums :: Antenna Discussion-
Jump to: