K3 Keying and NR
Locked
 
|
Whilst in QSO with a European station recently, he asked if I was
using a K3. I told him that I was and asked why he was asking. He said he thought I was using a K3 as he recognised the hard keying, having heard it on some other K3s. I was using the NR option at the time. This was the first critical report on the hard keying of my K3 that I have received since I started using it in May. I only operate CW and have made well over 4500 QSOs with it so far, but have only recently started using the NR option. I believe I read something about this on the Reflector recently but a search of the archives does not reveal anything - perhaps it was on the K3 Reflector? I carried out some tests this morning on 80 metres with a good friend (a K2 owner) and someone who I can rely on to give me honest reports. I didn't tell him what I was doing, but asked him to comment on the hardness of my keying in position 1 and position 2. Position 1 was without NR and position 2 was with it. He said the keying was noticeable harder in position 2. I am not a technical person, hence my question as to whether using the NR option can effect the hardness of the keying? If it can, is it fixable, please? Thanks and 73 de Chris, G4BUE _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
|
|
>Whilst in QSO with a European station recently, he asked if I was
>using a K3. I told him that I was and asked why he was asking. He >said he thought I was using a K3 as he recognised the hard keying, >having heard it on some other K3s. I was using the NR option at the >time. >Thanks and 73 de Chris, G4BUE Ah, now I get it. When I was in the EUHFC contest two weeks ago, I was playing with the NR and its parameter on one of the lower bands while running. Someone broke in (no callsign given) and sent "check ur tx - check ur tx". It was the first and only comment about my signal ever so I thought it was his RX. I'm sure the NR was on at that point because the band (80? 160?) was very noisy. So his remark might have been caused by the same K3 issue? I never had a rig with NR or NB (TS-850's NB = no effect), can anyone tell me how to set it up or is it just a case of see-what-is-the-best-setting-at-a-given-time? 73 de Franki ON5ZO http://on5zo.spaces.live.com/ _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
|
|
In reply to this post by G4BUE
I just keyed my K3 with and without NR (all settings) while looking at the
keying waveform. I used both the internal keyer and an external computer interface for keying and could not see any effect on the 5 mS rise and fall times related to NR settings or with NR on or off. Don K7FJ K3 #195 latest Beta > Whilst in QSO with a European station recently, he asked if I was > using a K3. I told him that I was and asked why he was asking. He > said he thought I was using a K3 as he recognised the hard keying, > having heard it on some other K3s. I was using the NR option at the > time. > > This was the first critical report on the hard keying of my K3 that I > have received since I started using it in May. I only operate CW and > have made well over 4500 QSOs with it so far, but have only recently > started using the NR option. > > I believe I read something about this on the Reflector recently but a > search of the archives does not reveal anything - perhaps it was on > the K3 Reflector? > > I carried out some tests this morning on 80 metres with a good friend > (a K2 owner) and someone who I can rely on to give me honest reports. > I didn't tell him what I was doing, but asked him to comment on the > hardness of my keying in position 1 and position 2. Position 1 was > without NR and position 2 was with it. He said the keying was > noticeable harder in position 2. > > I am not a technical person, hence my question as to whether using > the NR option can effect the hardness of the keying? If it can, is > it fixable, please? > > Thanks and 73 de Chris, G4BUE > Elecraft mailing list Post to: [hidden email] 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 |
|
Administrator
|
In reply to this post by G4BUE
Hi Chris,
> I am not a technical person, hence my question as to whether > using the NR option can effect the hardness of the keying? NR should have no effect in transmit mode. I'll look into this right away. What revision of firmware are you using? Does the keying issue change if you move the VFO a bit, say 1 kHz in either direction? tnx Wayne N6KR _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
|
|
In reply to this post by Don Ehrlich
I just did the same as Don and like him found absolutely no difference to the waveform on the scope with or without NR at all settings, internal or external keying. I could however get the keying to totally loose it by switching in the NR while actually sending - most but not every time it would change to a sort of high frequency, highly overdriven chopped AM sine wave; not something that could be mistaken for cw keying, hard or not. Pressing buttons like NR while actually sending is presumably not in the script and would I assume come under the title of 'unpredictable'. Running the latest betaware, dsp tables etc and also the 5ms keying hardware mod. Stewart Rolfe, GW0ETF (K3 145) |
|
|
Thanks Stewart.
I loaded the latest firmware this morning (I was using 2.20) but before I did that, I tried monitoring my transmitted signal on another receiver, on the same 80m frequency that I did the test with my UK friend yesterday morning. I cannot tell any difference to the keying between having the NR switched in and switched out. After loading 2.23, my signal sounded exactly the same on my other receiver and a report from a European station on 20m said the keying was "perfect" and there was no sign of any clicks. I now intend leaving well alone and am putting the experience down to one of the mysteries of life! 73 de Chris, G4BUE On 15 Aug 2008 at 2:04, GW0ETF wrote: > > > Don Ehrlich wrote: > > > > I just keyed my K3 with and without NR (all settings) while > looking at the > > keying waveform. I used both the internal keyer and an external > computer > > interface for keying and could not see any effect on the 5 mS rise > and > > fall > > times related to NR settings or with NR on or off. > > > > Don K7FJ > > K3 #195 latest Beta > > > > > > I just did the same as Don and like him found absolutely no > difference to > the waveform on the scope with or without NR at all settings, > internal or > external keying. > > I could however get the keying to totally loose it by switching in > the NR > while actually sending - most but not every time it would change to > a sort > of high frequency, highly overdriven chopped AM sine wave; not > something > that could be mistaken for cw keying, hard or not. Pressing buttons > like NR > while actually sending is presumably not in the script and would I > assume > come under the title of 'unpredictable'. > > Running the latest betaware, dsp tables etc and also the 5ms keying > hardware > mod. > > Stewart Rolfe, GW0ETF (K3 145) > -- > View this message in context: > http://n2.nabble.com/K3-Keying-and-NR-tp724692p725906.html > Sent from the Elecraft mailing list archive at Nabble.com. > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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: [hidden email] 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 |
«
Return to Elecraft
|
1 view|%1 views
| Free forum by Nabble | Edit this page |