Re: [Elecraft] Strange behavior when tuning around with SUB receiver LINKED
My K3 does this sort of unexpected leap to next band up/down at tuning breaks with linked or unlinked main/sub. I assumed this was because I had the general coverage filter in the main but not the sub. Firmware 2.82. No 'zipper' noise here except that little bit at the bottom end of 6m. 73 Pete Connors F5VNB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 pwr out on digimodes
Joe Subich, W4TV wrote: Absolutely not! When conventional rigs are generating ALC their final amplifiers are ALREADY in compression and they are generating IMD in the PSK31 signal. A bit sweeping, Joe. Surely any sane engineer would put the onset of system ALC at a level *before* the PA goes into compression? (Such systems would not include grid current derived ALC from some class AB2 PA of yesteryear.) To avoid the well-known problems of selecting suitable ALC time constants and loop gain, the K3 performs ALC at the DSP level: for any signal, SSB or PSK31, doesn't this demand a flat transmit passband in the system following the processing? Good thread! 73, Pete F5VNB/G4PLZ ___ 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] K3 pwr out on digimodes
Joe Subich, W4TV wrote: If you want to be able to click to tune without manually adjusting power levels get a Flex-5000 or a transmitter that uses on frequency RF generation. Would a possible solution be 'split' operation using VFOA to 'read' an ssb passband via the sound card while VFOB is used to tx in PSK D via ASCII down the serial cable? Software to manage the frequency/mode difference shouldn't be too hard and 38400bps serial should keep tx/rx latency low. ___ 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] K3 Modifications Photos
Don Nesbitt wrote: I’ve posted a few photos of the modifications that I made at the same time I installed the KDVR3. Thank you, Don. I'm about to do the same on #900 and those pics are a great help. Pete, F5VNB ___ 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] XKeys Software Support for K2 / K3
That's the right site. Try 'Support', 'X-keys Support' and then 'X-keys Macroworks II (for PC)' for lots of information. The Mac link probably does the same, in pastel colours ;-) These look to be useful units but it seems to me that all they do is generate macros that can be programmed into the main computer. 73, Pete F5VNB David Ferrington, M0XDF wrote: Would someone please post some more info about this, like web site of unit etc? I think I must have missed any original post. I found http://www.piengineering.com/xkeys/xkpro.php which might be the keypad, but nothing about the interface or software. TIA 73 de M0XDF, K3 #174 -- The universe is like a safe to which there is a combination. But the combination is locked up in the safe. -Peter De Vries, editor, novelist (1910-1993) On 7 Jan 2009, at 03:08, K8TB wrote: Mike and others: It really is impressive to have this box along side the K3. Mike, I finally figured out how to program it, and I can write up a step by step install guide. But to the others, programming the software that Mike has is really rather easy. Any button can be used for any function. I like 6 meters a lot, so I have about 4 frequencies dialed in, each with their own button. Another button brings me to 14.070, data mode, for PSK use. If I get time, I may post some pictures of the box on my website. But I will guarantee you, 58 keys is a lot, and they can do anything the K3 can receive via the rs-232 port. tom K8TB ___ 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] K3: Still unable to set power correctly in, DATA A(sigh)
Joe Thank you for pointing out the difficulties in setting average power across a range of modulation types. Whatever the peak/average ratio of the modulation, the output power from the PA is peak limited - so wouldn't the answer be a K3 power meter and power control that shows/sets peak rather than average power? The power control would then be set just once and the average power would be an unavoidable consequence of the choice of modulation. 73, Pete F5VNB Joe Subich, W4TV wrote: Setting a power control calibrated for CW and expecting that level to be accurate for PSK31 or any other arbitrary digital modulation is complete folly and utter hubris. Among other issues the wattmeter does not know if you are setting peak or average power and it does not know what the average power should be for the arbitrary data and arbitrary modulation. For the K3 to accurately control the power level in all modes the its directional coupler would probably need to be improved by at least an order or magnitude. The response flatness would need to be improved by at least an octave and the detectors would need to be substantially more linear ... and that's just for CW. To handle arbitrary audio inputs takes some knowledge of the peak to average ratio as well as the peak duration (duty cycle) in order to select the proper detector time constants. Every voice every digital mode and every arbitrary data stream will have different peak to average ratios and duty cycles. Do you expect the DSP to calculate those values on the fly? Perhaps the power metering should be derived from a DSP based spectrum analyzer? Accept the fact that the power level control is relative. If Wayne and Lyle can improve on it that's great. However, trying to hold .1 dB or even 1 dB accuracy from 1 mW to 120 W, 1.8 MHz to 54 MHz with arbitrary modulation sources in a reasonably priced amateur transceiver is a fool's errand. 73, ... Joe, W4TV ___ 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] Elecraft CW Net Report for December 28th 29th, 2008 - OT
David Ferrington, M0XDF wrote: Could someone enlighten me as to what a 'grader' is please? Googling it gave me a selection of photographs. Wonderful thing, this internet ;-) 73, Pete F5VNB ___ 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] KDVR3 delivery
Just received notification of KDVR3 shipping for K3 #900 ordered 26 Nov 2007. Pete Connors F5VNB/G4PLZ ___ 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] K3 - Spontaneously changing config?
Down the years I have found that flashing a new BIOS on computer motherboards can also occasionally generate a surprise change or two. Why this should be I have never discovered but, eg, having your boot media priority changed can cause a distraught hour or two for the unwary. 73, Pete Connors F5VNB/G4PLZ ___ 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] Soundcard for LP Pan
Bill Maddock wrote: I am considering getting the N8LP LP pan - My K3 already has the transverter board - what is everyone running for a sound card - N8LP list several - sure would like some input! Also how long does it take to assemble the LP-Pan kit Thanks and 73, Bill N4ZI k K3 #1059 Bill, I am using the Infrasonic Quartet with a prebuilt 'run one' LP-PAN. I followed the setup for that card on the N8LP site and it works well with up to 192kHz in view at one time. I now need to do the IF buffer mod to reach a bit further down into the noise floor. Only possible snag: it is a PCI card so if you use a laptop you will have to try one of the other solutions. Good luck, Pete F5VNB/G4PLZ K3 #900 (with KRX3 kit sitting beside it) ___ 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] KRX3 - shipping status?
Are The KRX3 for #900, ordered 16 Nov last year, left Aptos for the UK on the 8th. Pete G4PLZ/F5VNB LB3SA wrote: It's been a while since I last saw anyone report a KRX3 arrival. Does anyone know what the current status is? I ordered mine along with my K3 March this year. The K3 arrived in August but I haven't heard anything about the KRX3 yet. Looking forward to it however!! :) 73, Are - LB3SA KX1, K2, K3 ___ 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] K3: Voice pitch adjustment on SSB
And by deliberately transmitting a higher pitch you could make your voice sound really deep and butch for when you tell someone their signal is as wide as a barn door. ;-) Pete, F5VNB O. Johns wrote: One way to solve this may seem a joke, but it isn't. Everyone should buy a little 440 Hz pitch pipe, the kind used to tune musical instruments. Then, say, the net control could blow his pitch pipe at the start of the net and all the listeners could blow their little pitch pipes while listening to net control. They would all then adjust their receiver tunings until the pitches matched. ___ 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] K3 - Proset K2 Mic Frequency Response
To avoid any possible doping scandal and reduce any inflammatory outcomes perhaps they should use a catabolic chamber. 73, Pete F5VNB Bob wrote: Is it a chamber lined with well known high priced and overpaid athletes? 73, Bob K2TK Bill NY9H wrote: ___ 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] K2 KAT100 and BL2 questions
Brian Try a current choke 'balun' instead of the BL2. As a temporary antenna I have 25m of twin speaker wire run out from the shack under the roof tiles - that's about 7m - and then the remaining 18m split as a doublet. It hangs at an average height of 5m from a couple of trees. The 'feeder' end connects through a current choke on a short piece of RG58 to the KAT3 in my K3. The KAT100 has the same matching range as the KAT3 and I assume the LC values are the similar. I have no idea what the loads are but the tuner finds a match on all bands 10-80m - but not 160m where the radiation resistance is tiny and the common mode choke good enough to render the band effectively dead unless I connect just the coax inner. Pete Connors, F5VNB ___ 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] K2 KAT100 and BL2 questions
Don I agree that the BL2 is a true current balun using a balanced design that chokes common mode currents while also transforming impedances to ease a conjugate match - albeit one of the ratios is 1:1 - but my coax-through-ferrite-beads unbalanced common mode choke *only* does what it says on the tin without any impedance transformation, hence my quotes around 'balun'. Without it, the 1.8MHz common mode noise pickup from my abject antenna siting is about S5/6 but with it the noise is S1/2. I leave it to the atu to transform complex impedance. 73, Pete F5VNB Don Wilhelm wrote: Pete, Brian and all, The BL2 *is* a current choke 'balun' - both in the 4:1 and the 1:1 configuration. 73, Don W3FPR ___ 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] K3 in Aquitaine
Factory built ordered 16 November. Katiegram 22 April, 1.8kHz filter and KRX3 on back order. Arrived Samazan 10.33 this morning via Santa Cruz, San Jose, Louisville KY, Köln (Cologne), Marseille, Bordeaux and Carbon Blanc. Another K3 in France - and I'm a bit closer to WAUPS... 73, Pete Connors F5VNB/G4PLZ ___ 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
