The Official Charlie Tango CB and Amateur Radio DX Group
 
HomeEventsGallerySearchRegisterLog in
Navigation
Homepage
Register
Forum Index
Memberlist
Edit Profile
Club Events
Search
Buy and Sell
Old CT Forum
Call Sign List
Donate
CT CB Radio Store
Forum FAQ
Log in
Username:
Password:
Log in automatically: 
:: I forgot my password
Search
 
 

Display results as :
 
Rechercher Advanced Search
Social bookmarking
Social bookmarking digg  Social bookmarking delicious  Social bookmarking reddit  Social bookmarking stumbleupon  Social bookmarking slashdot  Social bookmarking yahoo  Social bookmarking google  Social bookmarking blogmarks  Social bookmarking live      

Bookmark and share the address of The Official Charlie Tango DX Radio Group on your social bookmarking website
Latest topics
» Southern Area SSB net
Sirio short Icon_minitimeYesterday at 8:11 pm by THE RIZLA

» New member and call sign request pls (Issued)
Sirio short Icon_minitimeYesterday at 5:44 pm by StevieG

» 5w or 10w of power
Sirio short Icon_minitimeYesterday at 4:35 pm by GaryWilson

» Dave M0OGY In Radio User Magazine
Sirio short Icon_minitimeThu Dec 12, 2019 6:07 am by Delboy

» FREQUENCY CHART GUIDE
Sirio short Icon_minitimeWed Dec 11, 2019 5:00 pm by GaryWilson

» The Song Game
Sirio short Icon_minitimeWed Dec 11, 2019 3:25 pm by morris

» Show us ya tree !
Sirio short Icon_minitimeTue Dec 10, 2019 10:00 pm by redrobin5

» new membership needed ( sorted )
Sirio short Icon_minitimeTue Dec 10, 2019 9:16 pm by Sydthecat

» New member requesting call sign (Issued)
Sirio short Icon_minitimeTue Dec 10, 2019 6:47 pm by GaryWilson

Most active topic starters
Sydthecat
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Badgeruk1980
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Firetrap
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
mickyboy
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Master Virus
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
rabbi
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Ultimitmale (John)
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Matt86
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Sgt Bilko
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Delboy
Sirio short Vote_lcapSirio short Voting_barSirio short Vote_rcap 
Keywords
call Zetagi yaesu request silver division ss9900 antenna Buxton lincoln Service Gain Sirio list manuals midland sign alan Mckinley bash frequency file president callsign gainmaster Messages
December 2019
MonTueWedThuFriSatSun
      1
2345678
9101112131415
16171819202122
23242526272829
3031     
CalendarCalendar
Classified Adverts

Who is online?
In total there are 44 users online :: 2 Registered, 0 Hidden and 42 Guests :: 2 Bots

flashg0rd0n, Northern Crusader

Most users ever online was 230 on Thu Aug 08, 2019 3:46 pm

Share
 

 Sirio short

Go down 
AuthorMessage
Master Virus



Posts : 88
Reputation : 1
Join date : 2019-10-09
Age : 52
QTH or Location : Halifax
Call Sign : Romeo Echo 137
Equipment Used : CRT SS 9900 Antron 99

Sirio short Empty
PostSubject: Sirio short   Sirio short Icon_minitimeFri Nov 15, 2019 3:36 pm

Is the sirio 5000 pl meant to have a short in it?
I check the swr and its really high so i go into columbo mode and unplug the antenna from the swr.
I test the plug and the multimetre says its shorting so i strip down the whole lot and test it.
I test the thirty foot length of cable that has a short to find out there isn't a short so i test the 145 magmount and that's got no short either.
I test the sirio antenna inside connector and the outside connector to find its shorting.
So is this antenna meant to have a short with it having a coil? any info would really help columbo i mean me Very Happy
Ps, has anyone ever said "bloody cb's or bloody aerials or bloody wife?" Very Happy
Back to top Go down
GaryWilson
Admin
GaryWilson

Posts : 277
Reputation : 33
Join date : 2019-06-27
Age : 55
QTH or Location : London
Call Sign : 26CT1836 / Ham 2E0GGQ
Equipment Used : Radios & Wires & Stuff!

Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitimeSun Nov 17, 2019 6:34 am

Hello Master Virus, from memory I think these antennas will show a DC short. Remember there is a difference between the way RF and DC behaves.

73's Gary.
Back to top Go down
https://www.qrz.com/db/2E0GGQ
Sgt Bilko

Sgt Bilko

Posts : 36
Reputation : 3
Join date : 2019-07-20
Age : 51
QTH or Location : Prestonpans. East Lothian
Call Sign : 108 ct 302 - mm0ibe

Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitimeSun Nov 17, 2019 9:55 am

DC grounded.

A DC grounded antenna is any ground plane type antenna that has a DC path from the radiating element to the grounded side. An easy way to identify one is to meter it with an ohmmeter. They will read a short circuit, or very close to it. A more common name is a shunt fed antenna
Back to top Go down
Master Virus



Posts : 88
Reputation : 1
Join date : 2019-10-09
Age : 52
QTH or Location : Halifax
Call Sign : Romeo Echo 137
Equipment Used : CRT SS 9900 Antron 99

Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitimeSun Nov 17, 2019 1:53 pm

It was just when i checked the part that screws into the magmount it bleeps with the continuity test and there was resistance.
But if that's normal like the Antron 99 then everything is cool.
Thank you
Back to top Go down
Northern Crusader



Posts : 18
Reputation : 0
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, Albrecht AE6110

Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitimeSun Nov 24, 2019 3:10 pm

Look at the circuit diagram of say a 9:1 Unun and you'll see it is a dead short. Yet to RF it isn't.

Sirio short Cablage_9-1
Back to top Go down
Online
Northern Crusader



Posts : 18
Reputation : 0
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, Albrecht AE6110

Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitimeSun Nov 24, 2019 3:11 pm

Look at the circuit diagram of say a 4:1 Balun and you'll see it is a dead short. Yet to RF it isn't.

Sirio short Balun_4-1_image2
Back to top Go down
Online
Master Virus



Posts : 88
Reputation : 1
Join date : 2019-10-09
Age : 52
QTH or Location : Halifax
Call Sign : Romeo Echo 137
Equipment Used : CRT SS 9900 Antron 99

Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitimeMon Nov 25, 2019 6:22 pm

Northern Crusader

Thank you for taking the time to reply i really appreciate it. When you test the inner and outer cables you're not supposed to get a bleep so when you do its a little concerning.
But radio was never simple!
Thanks again.
Back to top Go down
Sponsored content




Sirio short Empty
PostSubject: Re: Sirio short   Sirio short Icon_minitime

Back to top Go down
 
Sirio short
Back to top 
Page 1 of 1

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