Re: [Elecraft] Running stations with k3

2016-09-21 Thread Ron D'Eau Claire
ehalf Of Fred Jensen Sent: Wednesday, September 21, 2016 12:20 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Running stations with k3 OK, this is probably a good place to ask: When trying to copy a weak-ish signal in noise and "other stuff" in the 50's, one of my crewmates at t

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Walter Underwood
> On Sep 21, 2016, at 11:33 AM, Matt Murphy wrote: > > In terms of the phase shift introduced by filters, I assume the distortion > introduced by the filter is commensurate with the steepness of the skirts? When designing an analog filter, you can optimize the amplitude response

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Fred Jensen
OK, this is probably a good place to ask: When trying to copy a weak-ish signal in noise and "other stuff" in the 50's, one of my crewmates at the coastal marine station told me to lay the cans on the desk, face up. It works. I don't know why, maybe someone here knows. Surprisingly, I

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Matt Murphy
> Now we're getting to the good part of this thread, which I've found quite illuminating, because it explains user preferences for one radio over another that aren't obvious. Thanks to Will, Guy, and Bill for their very useful contributions to the discussion. I agree, this is a very interesting

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Jim Brown
On Wed,9/21/2016 3:59 AM, Bill W4ZV wrote: This is nothing new. K3ZO has been doing this for about 30 years (at least) using wide filters and his ears as DSP. I did this long ago with a TS-930S using SSB filters with CW VBT fully engaged which shifts two IF filters in opposite directions

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Ron D'Eau Claire
Reflector Reflector Subject: Re: [Elecraft] Running stations with k3 Analog filters have phase delay. That would be stronger with a narrower filter. Also, the on-off CW signal has sidebands (the harmonics of the square wave). Maybe a narrower filter sounds “softer”? I have no idea what “full

Re: [Elecraft] Running stations with k3

2016-09-21 Thread WILLIE BABER
/ On Wed, 9/21/16, Guy Olinger K2AV <k2av@gmail.com> wrote: Subject: Re: [Elecraft] Running stations with k3 To: "Bill W4ZV" <btipp...@alum.mit.edu> Cc: "Elecraft Reflector" <elecraft@mailman.qth.net> Date: Wednesday, September 21, 2016, 10:43

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Guy Olinger K2AV
On Wed, Sep 21, 2016 at 6:59 AM, Bill W4ZV wrote: > This is nothing new. K3ZO has been doing this for about 30 years (at > least) > using wide filters and his ears as DSP. > Some people really CAN do this. For some years while he was living in NC, I had the pleasure of

Re: [Elecraft] Running stations with k3

2016-09-21 Thread Bill W4ZV
WILLIE BABER wrote > It wasn't my term. But I think "full-bodied" cw means a slightly wider > I-F to establish background noise that some ops want to hear, particularly > if the receiver has exceptional gain distribution and in-band IMD, which > the latest Icoms do have. This gives articulation

Re: [Elecraft] Running stations with k3

2016-09-20 Thread Walter Underwood
few times in 300z cwt. > > 73, Will, wj9b > KX1, k2, so2r K3/P3 > > > CWops #1085 > CWA Advisor levels II and III > http://cwops.org/ > > ---- > On Tue, 9/20/16, Ron D'Eau Claire <r...@cobi.biz> wrote: > &g

Re: [Elecraft] Running stations with k3

2016-09-20 Thread WILLIE BABER
nearly peg the meter of k3 a few times in 300z cwt. 73, Will, wj9b KX1, k2, so2r K3/P3 CWops #1085 CWA Advisor levels II and III http://cwops.org/ On Tue, 9/20/16, Ron D'Eau Claire <r...@cobi.biz> wrote: Subject: Re: [Elecraft] Running sta

Re: [Elecraft] Running stations with k3

2016-09-20 Thread Ron D'Eau Claire
l amp, Hi! We can hope they don't find a way. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of F5vjc Sent: Tuesday, September 20, 2016 3:01 PM To: Guy Olinger K2AV Cc: Elecraft Reflector Reflector Subject: Re: [Elecraft] Running sta

Re: [Elecraft] Running stations with k3

2016-09-20 Thread F5vjc
This is the degeneration of Amateur radio, yes really, it's true. These signals from Eu are invariably the dirtiest worst you will ever hear on the bands, spewing crap all over the band. Below... "The "full body" (whatever that means) CW technique will NOT work in a DX test I've been in (Will

Re: [Elecraft] Running stations with k3

2016-09-20 Thread Jim Brown
For one thing, you would hear more clicks with the broader filter. You would, of course, also hear MORE signals. 73, Jim K9YC On Tue,9/20/2016 2:08 PM, Matt Murphy wrote: Can anyone explain why zero beat CW would sound more "full bodied" with a 2.7 KHz IF than with, say, a 400 Hz IF

Re: [Elecraft] Running stations with k3

2016-09-20 Thread Matt Murphy
Interesting! Can anyone explain why zero beat CW would sound more "full bodied" with a 2.7 KHz IF than with, say, a 400 Hz IF bandwidth? It would seem that the CW signal was typically narrower than either one, so there would not be any information lost on a zero beat signal. Is there some sort

Re: [Elecraft] Running stations with k3

2016-09-20 Thread Guy Olinger K2AV
The killer for that wide roofer approach is that loud enough stations can pump the hardware AGC before the signal gets to the DSP. The "full body" (whatever that means) CW technique will NOT work in a DX test I've been in (Will knows where) with that 45 over S9 Italian station running 15 kW and a

[Elecraft] Running stations with k3

2016-09-19 Thread WILLIE BABER
Hello All, I did M/M with a big station in the NW running Icom 7700. Needless to say comparison between K3 (one was on site) versus Icom radios came into discussion during rest periods. Yes, the Icom 7700 played quite well, giving what some called "full-body" cw and easy to pick-out-stations