[Elecraft] K4 IQ out.

Good afternoon. Will the IQ out of the K4 be analog or digital? 73, Dan KM6CQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

Re: [Elecraft] The Night of Nights

I'm pretty sure it was posted here on the Elecraft list as well as CWops, NASOTA, and many club lists. KPH and a number of other museum stations and ships gather on maritime MF and HF frequencies on the night of 12 July each year at 0001 GMT, one minute after the final broadcast ~20 years ago. 

Re: [Elecraft] The Night of Nights

They are also QRV each Saturday starting about 1830z. K6KPH is workable too. See www.radiomarine.org for times and frequencies. 73, Brian, K0DTJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] The Night of Nights

Bill . . . It's been going on for 20 years every July 12th, and I saw announcements on at least 4 reflectors. Put it on your calendar for next year so you won't miss it. Also, a donation to keep them on the air would also be appropriate (as many of us do). 73, Kent  K9ZTV On 7/13/2019

Re: [Elecraft] ALC implementation

I like to think of ALC as receiver AGC in reverse. Done properly, it results in minimal distortion while keeping the signal level nearly constant.  As far as I can tell, commercial transceivers have all been doing this pretty well for a long time. What I've never been able to figure out is

[Elecraft] Night of Nights XXI - 12 July 2020

July 12 every year from 3 pm to midnight at the Historic RCA Coast Station KPH. Details here: https://www.nps.gov/pore/planyourvisit/events_nightofnights.htm John AE5X https://ae5x.blogspot.com __ Elecraft mailing list Home:

Re: [Elecraft] The Night of Nights

It sure would have been nice to have heard about this before it became OLD NEWS. If there was an announcement made here, I never saw it. Not everyone is plugged into to every nook and cranny of the radio world. A small timely announcement of this event would have been appreciated - by me and

Re: [Elecraft] ALC implementation

The original concept of ALC was devised by Collins engineers as part of their development program for speech processing. Speech clipping flattens the peak amplitude, but also introduces some splatter which then has to be filtered out - but the filtering re-introduces a small amount of level

Re: [Elecraft] ALC implementation

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Re: [Elecraft] ALC implementation

The compression modulates the signal. That will have a fourier transform of its own. If we think of it as a simple amplitude modulation then, as for AM signals, the spectrum of the original signal will be combined (convolved) with upper and lower sidebands representing the spectrum of the