crt 6900n bad tx audio

hi i have a new crt 6900n i bought it a few years ago 10 meters now open i had difficulty getting a contact i worked a dl station who told me my audio was very bad i tryed the menu settings still distorted audio on all phone modes i bought it from knights a few years ago and it had a fualt so sent it back it cost me 20 quid so when it came back it was on 27mhz after a phone call and a look around sites i got the key in details on the key pad i thought ok not used so i fired it up last week distorted audio any ideas so my ts 2000x in line now no probs thanks for looking stay safe get on 28mhz 73s paul m0kbd

Overdriven mic gain or you've got common mode RFI on the coax due to a lack of decent RF ground at the antenna and any RF choking on the coax going to it.

Did the station describe your audio, e.g. did it warble, or was it muffled etc? As well as the above suggestions, could be the PSU. If not enough power to drive it audio can warble.

What mic using? I know many people swap out the stock mic as it does seem a bit of a cheap afterthought by the manufacturer. I still use the stock one mostly, and whilst it's no studio mic, it's doing the job with no complaints. Have removed the foam insert, set the mic gain to 57, and talk a couple of inches from it.

Depending on the radio version you can set the talk back to to listen your mic. Not written in all versions of the manuals.. Long press on the function button then short presses of it until you see 'n09', use channel knob to adjust the talkback volume between 'off' and volume '63'. Hope that helps.

Sure this has been covered a few times but not under "HF Radios 0-30MHz" over in the "Multimode, Export and Sideband Radio" section.

hi thanks lads for your reply i will do a through cheek out on all aspects of this crt 6900n 28mhz rig as you say it must be the mic the other kpo mic i bought from knights is not a power mic i will test it fully today when i think back to cb days the turner expander wow was that loud and some folk used them with a mellos echo box stay safe get on 10 meters whill it is still open paul m0kbd 73s

I have a CRT 6900n every time i turn it on I need to unlock the screen. How do I get to turn on unlocked

rabbi wrote:

hi i have a new crt 6900n i bought it a few years ago 10 meters now open i had difficulty getting a contact i worked a dl station who told me my audio was very bad i tryed the menu settings still distorted audio on all phone modes i bought it from knights a few years ago and it had a fualt so sent it back it cost me 20 quid so when it came back it was on 27mhz after a phone call and a look around sites i got the key in details on the key pad i thought ok not used so i fired it up last week distorted audio any ideas so my ts 2000x in line now no probs thanks for looking stay safe get on 28mhz 73s paul m0kbd

Can't use a power mic on a 6900n. The modulation section needs to be opened up. I use a pre amp and a Frequency Equalizer.