[Elecraft] Re: K2 and digital modes
RTTY works even with Class C finals! Cortland KA5S -Original Message- Date: Fri, 21 Mar 2008 15:43:28 +0100 From: Simon Brown (HB9DRV) [EMAIL PROTECTED] Hi, This applies to phase shift keying modes. RTTY seems to be OK with some ALC - remember it's the peak power that matters, not the average. Simon Brown, HB9DRV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
Re: [Elecraft] Re: K2 and digital modes
I think you are correct if one is running FSK but most people, at least a lot of people these days are running AFSK, so need linear amps. One would just about have to build a Class C amp these days anyway. I don't know of any on the market. Cookie, K5EWJ --- Cortland Richmond [EMAIL PROTECTED] wrote: RTTY works even with Class C finals! Cortland KA5S -Original Message- Date: Fri, 21 Mar 2008 15:43:28 +0100 From: Simon Brown (HB9DRV) [EMAIL PROTECTED] Hi, This applies to phase shift keying modes. RTTY seems to be OK with some ALC - remember it's the peak power that matters, not the average. Simon Brown, HB9DRV ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
Re: [Elecraft] Re: K2 and digital modes
WILLIS COOKE wrote: I think you are correct if one is running FSK but most people, at least a lot of people these days are running AFSK, so need linear amps. One would just about have to build a Class C amp these days anyway. I don't know of any on the market. Whether a RTTY signal is generated by actually shifting the frequency of an oscillator or by driving an SSB transmitter with a single tone that changes frequency, the result is the same: a continuous signal whose frequency shifts between two values. In other words there's no difference between FSK and what people call AFSK except the means used to generate it; and it can be amplified with a class-C amplifier if you wish! -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
Re: [Elecraft] Re: K2 and digital modes
Exactly correct Jim K4JAF - Original Message - From: Vic K2VCO [EMAIL PROTECTED] To: WILLIS COOKE [EMAIL PROTECTED] Cc: elecraft@mailman.qth.net Sent: Friday, March 21, 2008 4:05 PM Subject: Re: [Elecraft] Re: K2 and digital modes WILLIS COOKE wrote: I think you are correct if one is running FSK but most people, at least a lot of people these days are running AFSK, so need linear amps. One would just about have to build a Class C amp these days anyway. I don't know of any on the market. Whether a RTTY signal is generated by actually shifting the frequency of an oscillator or by driving an SSB transmitter with a single tone that changes frequency, the result is the same: a continuous signal whose frequency shifts between two values. In other words there's no difference between FSK and what people call AFSK except the means used to generate it; and it can be amplified with a class-C amplifier if you wish! -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
[Elecraft] RE: K2 and Digital Modes
Hi to the list, Thanks to every one that replied to my query about the K2 and Digital modes. It was pretty much what I wanted to hear. I've now ordered my kit and am looking forward to receiving it so that I can get started on building this radio. So apologies to those that replied either to me on or off the list I usually reply far quicker than this. once again Thanks for the info much appreciated. Will no doubt be back in touch when I run into a problem :) Several people have suggested to remote the 100w PA so I'll no doubt go that way and I've been following the recent thread in the list on doing that. i now wish i had ordered a separate enclosure. Currently no plans to get the AATU that might just be an idea for a birthday/Xmas present. I never run any digital mode above 40 watts so may just get away with having the PA internal for now with the power limited to 30 on RTTY and lower on PSK etc Just one other thing what microphones are best suited to the K2 ? I currently use a Heil Proset with the HC 5 element on a Yaesu FT847 and was wondering if that was suitable for the K2? 73 Gary Gary McKelvie G7USC Web : www.garym.org.uk Mobile : +447968501863 MSN Messenger : [EMAIL PROTECTED] So Long and Thanks for all the Fish ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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
