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
XMAS COMPETITION: Win a Brand New Yaesu ft891 with Wideband Modification and to help the winner use it we are including a 30 Amp Power Supply on top. This is our biggest prize yet. All this could be yours for Christmas for just £20. - See Latest News Forum for details.
Latest Buxton 2020 News: Unfortunately, due to the Covid-19 pandemic we have had to cancel this year's Buxton date. Sorry for any inconvenience.
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
Keywords
alan Baofeng sign midland Mckinley charlie 9900 call president Mobile Sirio ss9900 antenna tango power callsign division tickets ss6900n bazooka lincoln list Calling radio chart frequency
QRZ Database
 

 The millionth time this question has been asked.

Go down 
AuthorMessage
Stressedmyke
New Member
New Member
Stressedmyke

Call Sign : 26-CT-3717
Posts : 8
Times Thanked : 0
Join date : 2020-07-08
QTH or Location : Billericay, Essex
Equipment Used : Mobile cb CRT Millennium (awaiting delivery) Sirio performer 3000 roof rack mounted on my Disco 3
Age : 54

The millionth time this question has been asked.  Empty
PostSubject: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeWed Jul 08, 2020 8:32 pm

Here goes.

I’m just coming back to CB and I’m installing a CRT MILLENNIUM into my Disco 3 as space is a real pain in this car. I have a steel full length roof rack that my sirio performer 3000 is bolted to and I have an SWR of 2.5 on 1 2.7 on 20 and 3 on 40 on UK 40. Now if I switch to ce 40 I have an SWR or 1.2 on 1 and 1.5 on 40.

What am I doing wrong?? When I had thIs antenna on my manky defender earlier this year (with a different rig) my SWR was always around 1.2 to 1.5

I do apologise for asking the question that must drive you bonkers but I genuinely thought I’d done ok fitting the antenna.

Thank you guys.

Myke.

Sorry, the antenna is a sirio performer PL P-800
Back to top Go down
View user profile
Firetrap
CT Directors
CT Directors
Firetrap

Call Sign : 26CT100
Posts : 235
Times Thanked : 9
Join date : 2019-06-25
QTH or Location : North Yorkshire
Equipment Used : Emperor Shogun, Delta 318 Export, TYT380, Albrecht 2990AFS, SS3900
Age : 37

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeWed Jul 08, 2020 9:14 pm

Slacken the grub screw and Extend/Reduce the whip by 2mm a time before calibrating and checking SWR

Tiny adjustments each time. If the SWR goes higher after extending the whip the do the opposite, a tiny bit at a time until the the SWR on ch19 is as low as possible

Stressedmyke likes this post

Back to top Go down
View user profile https://www.charlietango.co.uk
Firetrap
CT Directors
CT Directors
Firetrap

Call Sign : 26CT100
Posts : 235
Times Thanked : 9
Join date : 2019-06-25
QTH or Location : North Yorkshire
Equipment Used : Emperor Shogun, Delta 318 Export, TYT380, Albrecht 2990AFS, SS3900
Age : 37

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeWed Jul 08, 2020 9:19 pm

That antenna is factory tunes at CE/Midband. Your not doing anything wrong. Just adjust whip length until its low on the main channel you use. Make sure the connection between the mount and the rack is clean and tight and should be fine.

Stressedmyke likes this post

Back to top Go down
View user profile https://www.charlietango.co.uk
Stressedmyke
New Member
New Member
Stressedmyke

Call Sign : 26-CT-3717
Posts : 8
Times Thanked : 0
Join date : 2020-07-08
QTH or Location : Billericay, Essex
Equipment Used : Mobile cb CRT Millennium (awaiting delivery) Sirio performer 3000 roof rack mounted on my Disco 3
Age : 54

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeWed Jul 08, 2020 9:29 pm

Firetrap wrote:
That antenna is factory tunes at CE/Midband. Your not doing anything wrong. Just adjust whip length until its low on the main channel you use. Make sure the connection between the mount and the rack is clean and tight and should be fine.

Thank you.

As I get older I run out of patience to do stuff for myself 🤬🤬

The roof rack is steel and 8ft x 4ft so it should be a good ground plain ?

Shall I do a continuity check from roof rack to the body of the car?

Tristar likes this post

Back to top Go down
View user profile
Northern Crusader
Major contributor
Major contributor


Call Sign : M0GVZ / 26CT1760
Posts : 295
Times Thanked : 23
Join date : 2019-11-13
QTH or Location : IO94SA
Equipment Used : Icom 7300, TS480, President McKinley, Albrecht AE6110, CRT Mike
Age : 50

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeWed Jul 08, 2020 9:30 pm

As above, the antenna is too long which is why it's got a low SWR on Ch1 EU but higher on UK40. Part of the reason it's now too long is because you've a better RF ground than you had on your Defender.

Forget trying to get 1:1 on all the channels, the antenna doesn't have the bandwidth. As long as you can get 1.6-1.8:1 or less from EU Ch1 to UK Ch40 which it should be capable of doing then you're good to go. If you shorten it as much as you can and it's still not low enough you may need to consider cutting the whip, just do a small bit at a time.


Last edited by Northern Crusader on Wed Jul 08, 2020 9:31 pm; edited 1 time in total

glenn dog and Stressedmyke like this post

Back to top Go down
View user profile
Sgt Bilko
Senior contributor
Senior contributor
Sgt Bilko

Call Sign : 108 ct 302 - mm0ibe
Posts : 143
Times Thanked : 8
Join date : 2019-07-20
QTH or Location : Prestonpans. East Lothian
Equipment Used : Amstrad 901
Age : 52

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeWed Jul 08, 2020 9:30 pm

Higher the frequency, shorter the whip.
Lower the frequency , longer the whip.

Paul.

Firetrap, glenn dog and Stressedmyke like this post

Back to top Go down
View user profile
Stressedmyke
New Member
New Member
Stressedmyke

Call Sign : 26-CT-3717
Posts : 8
Times Thanked : 0
Join date : 2020-07-08
QTH or Location : Billericay, Essex
Equipment Used : Mobile cb CRT Millennium (awaiting delivery) Sirio performer 3000 roof rack mounted on my Disco 3
Age : 54

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeThu Jul 09, 2020 7:53 pm

Thank you all everyone.

I’ve spent the past hour trimming and I now have an SWR of 1.1 : 1 on 40 (UK) and 1.05 : 1 on channel 01.
I’ve never had it that good. 👍🏻👍🏻👍🏻

glenn dog likes this post

Back to top Go down
View user profile
BigTone
Contributor
Contributor


Call Sign : G8YMW or 26CT4498
Posts : 58
Times Thanked : 17
Join date : 2019-07-16
QTH or Location : Lincoln and Finningley
Equipment Used : CRT 9900, Yaesu FT817, Kenwood TS570, Icom 910
Age : 65

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeThu Jul 09, 2020 7:58 pm

Should be viable on the mids as well

Stressedmyke likes this post

Back to top Go down
View user profile
Stressedmyke
New Member
New Member
Stressedmyke

Call Sign : 26-CT-3717
Posts : 8
Times Thanked : 0
Join date : 2020-07-08
QTH or Location : Billericay, Essex
Equipment Used : Mobile cb CRT Millennium (awaiting delivery) Sirio performer 3000 roof rack mounted on my Disco 3
Age : 54

The millionth time this question has been asked.  Empty
PostSubject: Re: The millionth time this question has been asked.    The millionth time this question has been asked.  Icon_minitimeThu Jul 09, 2020 8:01 pm

On CE 01 it’s 1.7 and on 40 it’s 1.4 so I’m bloody chuffed.

Tristar likes this post

Back to top Go down
View user profile
 
The millionth time this question has been asked.
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 :: Standard Multistandard CB Radio UK/EU/Multinorm-
Jump to: