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
 
HomeEventsCalendarFAQLatest imagesSearchRegisterLog in
Join in with the fun of the Charlie Tango DX Group Summer 10m Challenge - from April 1st 2024
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
» Antenna Required.
Sirio - Sirio short Icon_minitimeToday at 4:58 pm by Badger

» First dx in 40 plus years
Sirio - Sirio short Icon_minitimeToday at 4:53 pm by Badger

» 10m dxcc ......
Sirio - Sirio short Icon_minitimeToday at 1:58 pm by SangueG

» Antenna Advice.....?
Sirio - Sirio short Icon_minitimeToday at 1:49 pm by SangueG

» Multimode mobile antenna
Sirio - Sirio short Icon_minitimeYesterday at 8:36 am by peewee norfolk

» New member call sign request (Issued)
Sirio - Sirio short Icon_minitimeYesterday at 5:03 am by Victor

» New call sign request (Issued)
Sirio - Sirio short Icon_minitimeTue Mar 26, 2024 10:19 pm by John123

» Call Sign Request (Issued)
Sirio - Sirio short Icon_minitimeTue Mar 26, 2024 6:37 pm by Jimnic333

» had a change around
Sirio - Sirio short Icon_minitimeTue Mar 26, 2024 6:22 am by SangueG

Keywords
president 9900 2023 6900 display ss9900 Baofeng lincoln yaesu frequency call anytone Mobile Sirio power chart meter ALINCO Mckinley sign callsign 2022 antenna supply list software
QRZ Database

 

 Sirio short

Go down 
4 posters
AuthorMessage
Master Virus
Contributor
Contributor



Call Sign : Romeo Echo 137
Posts : 94
Times Thanked : 2
Join date : 2019-10-09
QTH or Location : Halifax
Equipment Used : CRT SS 9900 Antron 99
Age : 56

Sirio - Sirio short Empty
PostSubject: Sirio short   Sirio - 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
CT Directors
CT Directors
GaryWilson


Call Sign : 26-CT-1836 Ham 2E0GGQ
Posts : 4128
Times Thanked : 344
Join date : 2019-06-27
QTH or Location : Redcar, North Yorkshire.
Equipment Used : Radios & Wires & Stuff!
Age : 59

Sirio - Sirio short Empty
PostSubject: Re: Sirio short   Sirio - 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
Major contributor
Major contributor
Sgt Bilko


Call Sign : 108 ct 302 - mm0ibe
Posts : 261
Times Thanked : 17
Join date : 2019-07-20
QTH or Location : Prestonpans. East Lothian
Equipment Used : SS9900
Age : 55

Sirio - Sirio short Empty
PostSubject: Re: Sirio short   Sirio - 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
Contributor
Contributor



Call Sign : Romeo Echo 137
Posts : 94
Times Thanked : 2
Join date : 2019-10-09
QTH or Location : Halifax
Equipment Used : CRT SS 9900 Antron 99
Age : 56

Sirio - Sirio short Empty
PostSubject: Re: Sirio short   Sirio - 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
Major contributor
Major contributor



Call Sign : M0GVZ / 26CT1760
Posts : 529
Times Thanked : 35
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 53

Sirio - Sirio short Empty
PostSubject: Re: Sirio short   Sirio - 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 - Sirio short Cablage_9-1
Back to top Go down
Northern Crusader
Major contributor
Major contributor



Call Sign : M0GVZ / 26CT1760
Posts : 529
Times Thanked : 35
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 53

Sirio - Sirio short Empty
PostSubject: Re: Sirio short   Sirio - 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 - Sirio short Balun_4-1_image2
Back to top Go down
Master Virus
Contributor
Contributor



Call Sign : Romeo Echo 137
Posts : 94
Times Thanked : 2
Join date : 2019-10-09
QTH or Location : Halifax
Equipment Used : CRT SS 9900 Antron 99
Age : 56

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

Back to top Go down
 
Sirio short
Back to top 
Page 1 of 1
 Similar topics
-
» my short twig.
» Short random sloper
» Sirio GPE 27
» Homebrew ATU for 160m with a way too short antenna!
» Short circuit in 1/2 wave Sigma Venom

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: