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
Subject: Screeech on my 6900 Fri Oct 13, 2023 4:18 pm
Has anybody had an issue with a loud screech before the on beep when you switch on a CRT 9900, as it hurts my little ears, how do I stop it please ??
Last edited by Wheel Nut on Tue Oct 17, 2023 3:30 pm; edited 1 time in total
Tonyvic Major contributor
Call Sign : 26-CT-4013/M7DVQ Posts : 234 Times Thanked : 12 Join date : 2021-02-24 QTH or Location : Brighton, East Sussex Equipment Used : Yaesu 991a - Imax 2000 - CRT Electro - Sharman X50 Age : 77
Subject: Re: Screeech on my 6900 Fri Oct 13, 2023 8:02 pm
Hi Bernie, Does an Error flash up when it screeches, and does it happen every time you switch on?
Sharpshooter Major contributor
Call Sign : 163-CT-329 Posts : 485 Times Thanked : 13 Join date : 2022-04-05 QTH or Location : Deeside, Flintshire Equipment Used : A growing list
Subject: Re: Screeech on my 6900 Fri Oct 13, 2023 9:24 pm
I get it sometimes with my 9900. Sounds like feedback.
I wonder if it's when the mic is close to the rig on switch on. Not transmitting of course , I have an external speaker next to it, in the car. But I think it did it before I installed that.
So not sure what's causing it, it's intermittent,
Ivy Mike Major contributor
Call Sign : 26CT4113/G1HWY Posts : 489 Times Thanked : 13 Join date : 2021-05-16 QTH or Location : IO90uv Equipment Used : ICOM radios/antenna farm Age : 69
Subject: Re: Screeech on my 6900 Sat Oct 14, 2023 8:15 am
My 9900 does it some times.
Guest Guest
Subject: Re: Screeech on my 6900 Sat Oct 14, 2023 11:38 am
Sorry chaps it is on my 9900 not the 6900 wot a pillock. Tony, no error message just a screech, but if like Sharpshooter says it could be feedback as the startup voltage is quite high. It happens sometimes so may need to make notice of where the mike is on startup. It may even be low voltage supply from the leisure battery, dunno.
Guest Guest
Subject: Re: Screeech on my 6900 Sat Oct 14, 2023 11:53 am
Yes definitely feedback !!!! Because the mike is to close to the speaker or headphones on startup, problem solved. Sharpshooter well spotted Sir
Tonyvic Major contributor
Call Sign : 26-CT-4013/M7DVQ Posts : 234 Times Thanked : 12 Join date : 2021-02-24 QTH or Location : Brighton, East Sussex Equipment Used : Yaesu 991a - Imax 2000 - CRT Electro - Sharman X50 Age : 77
Subject: Re: Screeech on my 6900 Sat Oct 14, 2023 6:34 pm
Wheel Nut wrote:
Yes definitely feedback !!!! Because the mike is to close to the speaker or headphones on startup, problem solved. Sharpshooter well spotted Sir
A number of people have this problem with the ss9900, a ferrite bead on the mic cable or a different mic have both completely cured the problem without having to think about how far apart thins are.
Edited to add: I won't even mention that if talkback is on (even very low) it could cause the problem.
Guest Guest
Subject: Re: Screeech on my 6900 Sat Oct 14, 2023 7:21 pm
Tonyvic wrote:
Wheel Nut wrote:
Yes definitely feedback !!!! Because the mike is to close to the speaker or headphones on startup, problem solved. Sharpshooter well spotted Sir
A number of people have this problem with the ss9900, a ferrite bead on the mic cable or a different mic have both completely cured the problem without having to think about how far apart thins are.
Edited to add: I won't even mention that if talkback is on (even very low) it could cause the problem.
Another mike? Hmm only seems to happen with the standard mike, my K-po NM532 seems OK. And the NOG is off. Anyway all sorted now. Thank all
Tonyvic Major contributor
Call Sign : 26-CT-4013/M7DVQ Posts : 234 Times Thanked : 12 Join date : 2021-02-24 QTH or Location : Brighton, East Sussex Equipment Used : Yaesu 991a - Imax 2000 - CRT Electro - Sharman X50 Age : 77
Subject: Re: Screeech on my 6900 Sun Oct 15, 2023 8:55 am
Wheel Nut wrote:
Tonyvic wrote:
Wheel Nut wrote:
Yes definitely feedback !!!! Because the mike is to close to the speaker or headphones on startup, problem solved. Sharpshooter well spotted Sir
A number of people have this problem with the ss9900, a ferrite bead on the mic cable or a different mic have both completely cured the problem without having to think about how far apart thins are.
Edited to add: I won't even mention that if talkback is on (even very low) it could cause the problem.
Another mike? Hmm only seems to happen with the standard mike, my K-po NM532 seems OK. And the NOG is off. Anyway all sorted now. Thank all
Ok Bernie, you didn't mention that it only happens with the stock mic. That is widely known & reported on the net! For future reference it makes things much easier if you state all the facts when asking for help.
ps. Glad your new static mobile antenna is doing better than the old one. I can at least hear you dulcet tones a tad when you are in West Sussex.
Guest Guest
Subject: Re: Screeech on my 6900 Sun Oct 15, 2023 5:14 pm
skyrider Major contributor
Call Sign : 26-CT-4654 Posts : 360 Times Thanked : 2 Join date : 2022-09-25 QTH or Location : Preston, Lancs. Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod Age : 64
Subject: Re: Screeech on my 6900 Sun Oct 15, 2023 6:10 pm
i bet he doesn't know how to take that
Tonyvic Major contributor
Call Sign : 26-CT-4013/M7DVQ Posts : 234 Times Thanked : 12 Join date : 2021-02-24 QTH or Location : Brighton, East Sussex Equipment Used : Yaesu 991a - Imax 2000 - CRT Electro - Sharman X50 Age : 77
Subject: Re: Screeech on my 6900 Sun Oct 15, 2023 10:28 pm
skyrider wrote:
i bet he doesn't know how to take that
If you mean I might not know Lionel, you are correct!
If you mean Bernie.
13oots2 Major contributor
Call Sign : 26-CT-4694, M7EUS Posts : 235 Times Thanked : 15 Join date : 2022-11-13 QTH or Location : Dorchester UK Equipment Used : Yaesu FT950, 66FT Endfed Antenna, Various Other Bits and Pieces Age : 57
Subject: Re: Screeech on my 6900 Mon Oct 16, 2023 6:40 am
I would go back to the person who sold you it, hang on, that was me lol.
Tonyvic likes this post
skyrider Major contributor
Call Sign : 26-CT-4654 Posts : 360 Times Thanked : 2 Join date : 2022-09-25 QTH or Location : Preston, Lancs. Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod Age : 64
Subject: Re: Screeech on my 6900 Mon Oct 16, 2023 7:51 pm
WHOOPS
Guest Guest
Subject: Re: Screeech on my 6900 Tue Oct 17, 2023 9:51 am
skyrider wrote:
i bet he doesn't know how to take that
I do know how to take that, simple ask no questions.
Tonyvic Major contributor
Call Sign : 26-CT-4013/M7DVQ Posts : 234 Times Thanked : 12 Join date : 2021-02-24 QTH or Location : Brighton, East Sussex Equipment Used : Yaesu 991a - Imax 2000 - CRT Electro - Sharman X50 Age : 77
Subject: Re: Screeech on my 6900 Tue Oct 17, 2023 12:25 pm
Bernie, I'm sorry if you took it the wrong way. Please ask questions, my only point was that a more informed answer can be given with the relevant info.
Guest Guest
Subject: Re: Screeech on my 6900 Fri Oct 20, 2023 8:13 pm
Tonyvic wrote:
Bernie, I'm sorry if you took it the wrong way. Please ask questions, my only point was that a more informed answer can be given with the relevant info.
No more Questions from here. This is after all an open public forum, I don't expect this as an answer.
Yesterday at 11:50 pm by AMM
Subject: Screeech on my 6900 
