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Call Sign : 26-CT-4484 Posts : 91 Times Thanked : 3 Join date : 2021-10-17 QTH or Location : Torquay Equipment Used : cobra 148 glt dx starlker9 fdx, icom 706 mk1
Subject: swr to high when engine is running Sun Apr 17, 2022 8:52 pm
can anyone one please tell me why my radio tells me my swr is high when the engine is running i have a SWR 1.1 on AM, FM and SSB but when i start the engine it wont let me use SSB but will AM and FM my radio is a 6900. thanks Dave 73s
Alan Pilot Major contributor
Call Sign : 163-CT-220...MW7TTA Posts : 2516 Times Thanked : 69 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 150
Subject: Re: swr to high when engine is running Mon Apr 18, 2022 8:02 am
Personally i would use an external swr meter as i don't trust the built in ones. With the engine running you will get a higher voltage that could upset the built in swr meter. You might even find the one in the radio is telling porkies.
Sydthecat and Victor like this post
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Subject: Re: swr to high when engine is running Tue Apr 19, 2022 8:09 pm
Alan Pilot wrote:
Personally i would use an external swr meter as i don't trust the built in ones. With the engine running you will get a higher voltage that could upset the built in swr meter. You might even find the one in the radio is telling porkies.
I get High DC warning flash up on my 6900n while the engine is running.So I just use it with the engine off while static mobile and every 60 minutes or so I switch it off and run the engine for a while.No AA on the T5..lol Cheers Tom. 26CT429
teapot Contributor
Call Sign : 26-CT-4484 Posts : 91 Times Thanked : 3 Join date : 2021-10-17 QTH or Location : Torquay Equipment Used : cobra 148 glt dx starlker9 fdx, icom 706 mk1
Subject: Re: swr to high when engine is running Tue Apr 19, 2022 8:15 pm
Thank you for your comment what I have done i just turn of the function so I can use it with the engine running because I know my SWR is very low.
Victor likes this post
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Subject: Re: swr to high when engine is running Wed Apr 20, 2022 7:54 am
teapot wrote:
Thank you for your comment what I have done i just turn of the function so I can use it with the engine running because I know my SWR is very low.
Hi teapot,Can I ask what function have you switched off on your radio.. Cheers Tom
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 5803 Times Thanked : 352 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: swr to high when engine is running Wed Apr 20, 2022 10:13 am
Sorry to jump in here....(just trying to help. )
It's the "tSr" setting on the function menu setup Tom.
Just in case, page 17 of the manual on the following link :-
http://www.cbradio.nl/crt/Manual_CRT_6900_ENG.pdf
All the best, Victor
teapot Contributor
Call Sign : 26-CT-4484 Posts : 91 Times Thanked : 3 Join date : 2021-10-17 QTH or Location : Torquay Equipment Used : cobra 148 glt dx starlker9 fdx, icom 706 mk1
Subject: Re: swr to high when engine is running Wed Apr 20, 2022 10:18 am
Thank you Victor I was just about to tell him that as I have just read his reply. Teapot
Victor likes this post
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 5803 Times Thanked : 352 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: swr to high when engine is running Wed Apr 20, 2022 10:24 am
No worries there Dave, we're all a helpful bunch here at Charlie Tango.
Your solution of turning the SWR protect function off when you know the SWR is good is a great idea.
All the best, Victor
teapot Contributor
Call Sign : 26-CT-4484 Posts : 91 Times Thanked : 3 Join date : 2021-10-17 QTH or Location : Torquay Equipment Used : cobra 148 glt dx starlker9 fdx, icom 706 mk1
Subject: Re: swr to high when engine is running Wed Apr 20, 2022 10:28 am
Thank you Victor
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Alan Pilot Major contributor
Call Sign : 163-CT-220...MW7TTA Posts : 2516 Times Thanked : 69 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7300,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 150
Subject: Re: swr to high when engine is running Wed Apr 20, 2022 10:38 am
Anybody. Make sure your SWR is good and if you can check it with an external meter. Just me better safe than sorry with blown output's.
Victor likes this post
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Subject: Re: swr to high when engine is running Wed Apr 20, 2022 1:08 pm
Victor wrote:
Sorry to jump in here....(just trying to help. )
It's the "tSr" setting on the function menu setup Tom.
Just in case, page 17 of the manual on the following link :-
http://www.cbradio.nl/crt/Manual_CRT_6900_ENG.pdf
All the best, Victor
Thank you Victor,hope your good mate. Tom
Victor CT Directors
Call Sign : 26-CT-3228 / M7VIC Posts : 5803 Times Thanked : 352 Join date : 2019-11-10 QTH or Location : Bedford Equipment Used : Various
Subject: Re: swr to high when engine is running Wed Apr 20, 2022 2:45 pm
No worries Tom. We're all good here thanks mate, I hope you and yours are all well too.
Yesterday at 11:23 pm by Mr T
Subject: swr to high when engine is running 
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