----- Original Message ----- From: "Vic K2VCO" <[EMAIL PROTECTED]> To: "Mike Harris" <[EMAIL PROTECTED]> Cc: <[email protected]> Sent: Wednesday, February 27, 2008 1:12 PM Subject: Re: [Elecraft] K3 - CW Sidetone
| Mike Harris wrote: | > G'day, | > | > Has anyone else noticed a slight chuffing of the CW sidetone when in QSK | > mode. The chuffing is absent when in manual TX. I guess it's probably | > the change over from band noise to sidetone. Nevertheless it sounds odd. | | Mike, | | Try reducing the audio gain a bit or increasing the sidetone level and | see if that reduces the phenomenon. If so, I believe it is exactly what | you say, the change-over, etc. I notice the same thing, and have viewed | the audio on a scope looking for artifacts and haven't found any. | | There's a similar problem when there are a lot of signals in the | passband. I think it's because the QSK is *too* good -- very fast, and | the sidetone is shaped to match the RF output. | | Wayne has talked about making some sidetone characteristics adjustable | to make it easier to monitor in noisy or crowded conditions. This is | probably not going to happen tomorrow, though! | -- | 73, | Vic, K2VCO | Fresno CA | http://www.qsl.net/k2vco Hi, It is indeed a balancing act between monitor and RX audio levels. The effect is most noticeable when using headphones. The house here is pretty quiet and I don't use a very high sidetone (monitor) level, around about 14. It's not a problem, just an observation. No secret hardware change required. Regards, Mike VP8NO _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
