Re: [Elecraft] K3 PSK31 with Digipan
It finally dawned on me that the 6kHz filter could be put to work for soundcard modes in both transmit and receive by enabling ESSB and using USB or LSB instead of DATA A. Indeed, it works just fine with BW set to 4kHz and shift adjusted to put center at 1800 or so. With DM 780 set to max width (3.9 kHz) the waterfall just about fills the screen and there's almost 3.5 kHz bandwidth for transmit and receive. This gives a wider field for casual point and click PSK31 operation - nice for a simple setup like mine where there is no computer control of the radio, and I want to keep the knob twirling on the rig to a minimum (the interface consists only of 2 audio cables between laptop and rig with VOX keying. TX EQ flat, AGC and compressor disabled of course). Bob NW8L On Fri, Sep 19, 2008 at 5:43 PM, Dave Quick - KØEKL <[EMAIL PROTECTED]> wrote: > Still, it would be nice to be able to at least see the full 6 KHz. Sort of > like a mini-panadaptor. Perhaps it's time to order and LP-Pan! ___ 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 configuration question
Hello elecrafters, i ordered a K3 with the additional KBPF3 module for general Coverage. Do i need the additional AM Filter for listening to AM radiostations? or ist this AM Filter only neccessary for AM TX? Thanks for your configuration support. Michael, DC0ZO K2# 5619 ___ 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] heil pro-set
Current Heil production uses 200 Ohm transducers - or did the last time I checked. Heil web site specifies 200 Ohm for all four versions (including the ProSet-iC, a.k.a ProSet-K2). 73, ... Joe, W4TV > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of n8ws > Sent: Friday, September 19, 2008 11:35 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] heil pro-set > > > > I wonder if anyone knows what the impedence is on the pro-set > headset for the K 3? > > Bill N8WS ___ 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 USB TO SERIAL CABLE
I haven't had to face that one myself, yet (still running Xp here), but if I were to go digging for another RS232 port for a notebook I'd look at an RS232 PCMCIA card. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Norm Greenaway Sent: Friday, September 19, 2008 7:24 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 USB TO SERIAL CABLE I am using vista 64 on my laptop computer. Can anyone suggest where I might get a usb-serial cable with drivers for vista 64 Any Ideas welcome 73 Norm VK4FNWG ___ 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] Toroids frequency range and baluns
Jim wrote: WRONG! There are three fundamental cases of ferrite "baluns" or chokes. 1) A choke wound with coax 2) a choke wound with parallel wires (bifilar) 3) a transformer (voltage balun). - You are absolutely right Jim. I read current balun and thought choke balun. I missed the 4:1 comment. "Balun" is an unfortunate, all-inclusive and misleading term. One so-called "balun" may be as different from another "balun" in its requirements and application as a motorcycle is different from railroad locomotive. I stand by my statement when talking about a "choke balun" consisting of a string of ferrite beads on some coax or a coaxial line on a coil form such as I described. The only losses caused by such a balun will be those of the transmission line itself, which cannot be ignored if the SWR is high. So-called "baluns" that transform impedances are, typically, transformers -- often transmission-line transformers. They're a whole different animal and can be very unpredictable, especially when they use ferrite or powdered iron cores and are exposed to a wide range of impedances. Ron AC7AC ___ 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] heil pro-set
I wonder if anyone knows what the impedence is on the pro-set headset for the K 3? Bill N8WS -- View this message in context: http://n2.nabble.com/heil-pro-set-tp1102468p1102468.html Sent from the Elecraft mailing list archive at Nabble.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] K2 QRP DXCC
Well, I am sure I am not the first one, nor the only one, but today I worked the last station I needed to achieve DXCC QRP with my K2 serial number 4960 (almost 50% on SSB). I have been using it on and off since summer of 2006 when WA2DKG built it for me (thanks Jerry!) providing me many hours of pleasure. Most QSOs have been confirmed via eQSL, some by LotW. No award until they are all in, but pretty good for this chunk of the solar cycle, and further proof (as if any were needed) of the Elecraft mojo. What next? Maybe DXCC with my KX-1, or my K1, or K3? I cam close to WAS with the KX-1, so that might be the next project. Speak up out there; surely there are good stories of other awards and the same ones, from the rest of you and I would enjoy hearing about them. 73 de Dave, W5SV ___ 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 USB TO SERIAL CABLE
i've not used this one but it claims vista64 compatibility. http://www.usbgear.com/USBG-232MINI.html it's based on the ftdi chip. a quick browse of the ftdi driver page: http://www.ftdichip.com/FTDrivers.htm shows that they support vista64 so it's plausible. 73 jim ab3cv ___ 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 USB TO SERIAL CABLE
I am using vista 64 on my laptop computer. Can anyone suggest where I might get a usb-serial cable with drivers for vista 64 Any Ideas welcome 73 Norm VK4FNWG ___ 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] elecraft MH2 mic
Recently received my K3/100 s/n 1650. But need help activating MH2 mic. Have followed all the manual procedures but still unable to turn bias on in mike. any suggestions 73 VK4FNWG ___ 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] Ferrite transformer losses, 43-foot vertical and the K3
Phil. Questions: 1. Why would one use a balun when both the antenna and coax are unbalanced? Wouldn't a unun be appropriate? 2. What are the swrs at the balun? The swr at the K3 doesn't tell us much since the length of the coax affects it greatly. Steve Ellington N4LQ [EMAIL PROTECTED] - Original Message - From: "Phil & Debbie Salas" <[EMAIL PROTECTED]> To: Sent: Friday, September 19, 2008 4:21 PM Subject: [Elecraft] Ferrite transformer losses, 43-foot vertical and the K3 Because of some earlier discussions here, I wanted to actually measure losses in a 4:1 ferrite transformer. I wanted this info as I have a home-brew 43-foot vertical and these transformers are what seem to be recommended for "matching" to this antenna. I used a FT240-61 ferrite toroid which has a permeability of 125. I chose 16-gauge speaker wire to experiment with. This is because I want to eventually use high voltage wire, and 16-gauge is the largest gauge 2-conductor high-voltage wire I could find (McMaster-Carr 9634T701 @ $2.65/foot). I built a 4:1 unun, as I am feeding an unbalanced vertical antenna. And I decided to go with a voltage balun as this is a simpler structure than a current balun or unun. With a little experimentation, I was able to build a very good 1.8-30 MHz 4:1 unun. This consists of 12-turns of the 16-gauge speaker wire on the FT-240-61. As the voltage balun is a little inductive causing degradation at the higher frequencies, I tuned this out with a 33pf capacitor across the 50 ohm input. This gave me a transformer with 1.2:1 SWR at 1.8 MHz, but less than 1.1:1 from 3.5-30 MHz. In order to measure loss, I built a second identical transformer and connected these back-to-back. I measured insertion loss with both an Array Solutions PowerMaster, and a Tektronix TDS-2200 digital oscilloscope. I made all measurements with 20 watts of RF power on my workbench. Bottom line: Loss through both transformers was less than ½-watt (20 watts forward power) from 1.8-30 MHz. This is just a little over 1% of loss in each transformer. Even if my measurements are off by a factor of two, this is still pretty much insignificant loss. Next I installed one of these transformers at the base of my 43-foot vertical. My radial system isn't the best in the world because of the space I'm restricted to. I have about a dozen random-length radials with lengths up to about 50-feet. My transmission line is 60-feet of Andrew ½-inch Heliax that transitions to a 3-foot section of LMR-400 inside my house going to the K3. My Array Solutions PowerMaster is located immediately at the output of the K3. The SWR measured with the PowerMaster was as follows: 160: 4.9:1 80: 6.3:1 60: 3.3:1 40: 3.2:1 30: 3.2:1 20: 3:1 17: 2.1:1 15: 1.9:1 12: 1.4:1 10: 2.2:1 Obviously, these mismatches are easily handled by the internal K3 auto-tuner. And line loss is minimal because the mismatch isn't very high, and the transmission line is very low loss. The 16-gauge speaker wire on the FT240-61 core seems to be working fine even with 600 watts out of my ALS-600 amplifier. However, I do have some of that expensive McMaster-Carr high-voltage wire on order. Anyway, I just thought I'd share these measurements with the group. Phil - AD5X ___ 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1679 - Release Date: 9/18/2008 5:03 PM ___ 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] Any K3 Owners in Tucson?
I'll be in Tucson October 21st through October 28th visiting family. Please contact me off list if you'd like to get together. Maybe we can arrange something... 73, Lyle KK7P ___ 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] Service
Fellow Crafters, Due to a problem I had with the R91 mod during my KRX3 install, it was recommended that I return my K3 for repair. I sent it in recently, and today received a call from Rene and discussed my repair. The K3 is now on it's way home. I want to let Elecraft, Rene, and everyone on the list know that I reallyappreciate the care and consideration shown. Clearly the ingredient that sets this company and this radio apart from the rest. Just my 2 cents worth. 73, Mike K5NU ___ 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: Ferrite, toroids and the KX1
Antenna guru I'm not, but this antenna grasshopper has a little information that may help. The "loading coil" is used to compensate for reactance in the antenna. A grounded, end-fed < 1/4 long will present capacitive reactance. You simply need enough inductance to bring it to resonance. Normally, the ATU will provide that unless, as you noted, it can't provide enough. The only purpose for achieving "resonance" is for efficient power transfer. For an AC circuit (RF is just high-frequency AC) to transfer power efficiently, the current and voltage must be in phase: maximum voltage and maximum current must occur at the same time. That won't happen if reactance is present. So the first step is to achieve resonance. That leaves only the resistive part of the impedance presented to the rig. That's the part that consumes the power. Part of it is real "resistance" - the resistance of the conductors in the antenna. The rest is "radiation resistance" - the part that becomes electromagnetic (radio) waves. The value of that resistive component varies widely. At the center of a half wave (dipole) radiator, it's about 75 ohms in "free space". At the real heights above earth us Hams are usually forced to use it's usually closer to 50 ohms. Either value is an excellent match to the popular 50-ohm coaxial lines. A "Marconi" antenna (grounded 1/4 wave radiator) will show half that value or about 37 ohms. But, as you make the radiator shorter than 1/4 wave, the resistive value plummets. At 1/8 wave the value drops to about 7 ohms. Your 21 foot antenna will be about 1/12 wavelength long on 80 meters. Its resistive impedance will be about 3 ohms. Your ATU will need to provide an impedance transformation that matches the roughly 3 ohms to 50 ohms. You'll get a 1:1 match if it can do that. Adding or removing turns from the loading coil won't affect that resistive value (other than to change the added conductor resistance), but it can reduce the amount of inductance the ATU must provide to resonate the system, and that may allow it to find a match. The fact that the resistive part of the impedance drops so quickly to very low values is why short antennas are inefficient at best. The conductor resistance of the coils and antenna quickly become equal to or larger than the radiation resistance. Since the RF current flows only along the very surface of a conductor, its RF resistance is much, much higher than its d-c resistance. It's not unusual for a short, loaded Marconi antenna (such as a mobile whip with loading coil) to burn, literally, most of the RF power applied in the conductor resistance. If we ever get really cheap room-temperature superconductors, we'll be able to put up a really efficient short whip antenna on the low bands. Until then we groan and live with it, getting all the physical length we can to raise the radiation resistance and cut our losses. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Friday, September 19, 2008 2:10 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Re: Ferrite, toroids and the KX1 Just to confuse the subject... ;^} I am running a KX1 with an antenna lenght of 21' and a 'ground' length of 21'. The KXAT can match these to < 1.2:1 on 40/30/20 with little effort. I'm taking the approach of trying to use a ferrite toroid based inductive load in series with the antennna wire. By trail and error, I have constructed a F50 toroid (mix unknown but the whole toroid is plain black) that measures out at 40uH and ~800X at 3.55 Mhz using an MFJ-269 Pro This weekend I intend to try inserting this between the KX1 BNC socket and the antenna wire and, if I have the time, in the middle, to see if the KXAT can give me a match... I don't think end loading will be practical... Any input from the antenna guru's out there would be welcomed... Dave KK7SS ___ 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 PSK31 with Digipan
Quite true and when in qso I do try to center the desired signal in the passband and when the qrm is bad the K3 absolutely shines! It's so much fun to turn that knob, narrow the passband to a sliver of spectrum and see and hear every other signal disappear. Still, it would be nice to be able to at least see the full 6 KHz. Sort of like a mini-panadaptor. Perhaps it's time to order and LP-Pan! -Original Message- From: Don Wilhelm [mailto:[EMAIL PROTECTED] Sent: Friday, September 19, 2008 2:36 PM To: Dave Quick - KØEKL Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 PSK31 with Digipan Dave, OTOH, best results with AFSK is to use a narrow receive filter. It keeps strong undesired signals out of the passband. Strong undesired signals in the passband cause a reduction of receiver gain because the AGC reacts to them. Sure, the computer can handle and display them, but if the receiver gain is reduced because of a strong signal that just came on, your chances of maintaining solid print is reduced. Do as you choose, but I prefer to tune my data mode signals just like any other - with the VFO knob, and use a narrow filter to get rid of the 'other trash' on the band. 73, Don W3FPR Dave Quick - KØEKL wrote: > I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. > Being able to see ~6 Khz of spectrum in the waterfall window would be great. > > -Dave Quick KØEKL > > > > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, > W4TV > Sent: Friday, September 19, 2008 11:55 AM > To: 'zibs'; elecraft@mailman.qth.net > Subject: RE: [Elecraft] K3 PSK31 with Digipan > > > >> But in Data A mode, one can expand the receive width out to >> 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 >> or above 2800 Hz, power output will drop to zero. >> > > Perhaps all of the data modes should be limited to 2.8 KHz of DSP > bandwidth (or even 2 KHz). That's more than enough for any reasonable > amateur data mode and will keep users from shooting themselves in the foot. > > > > > ___ 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 PSK31 with Digipan
On Sep 19, 2008, at 2:32 PM, Bob Cunnings wrote: Yes transmit is restricted - to the 2.7 (or 2.8) kHz filter. Hence the request to allow transmit using the 6 KHz filter, at least to same extent as receive (up to 4KHz currently). We all agree that you can receive in a wide passband (even as wide as the 192 kHz that an LP-PAN provides). For transmit, as long as the emission passband is not too wide to fit the rig's transmit passband, modify the software to note the receive offset that you have clicked in the waterfall and use CAT to apply the offset as XIT (or switch between A/B VFO) when transmitting. I.e., you can send an absolutely fixed AFSK tone (tones, in the case of FSK) from software and move the transmitted signal around in the RF spectrum by using XIT (or A/B VFO). It should be a very simple change to whatever software that you are using (if you have the sources to the program, that is), as long as the program has access to the rig's CAT. The advantage of doing it this way is that it has no dependency at all on how flat the rig's transmit audio passband is, since you are transmitting with the same fixed tone no matter where in the waterfall you have clicked. You can also use the built in FSK/PSK generators in modern rigs to modulate your rig. As long as you know what the tone/tone-pair it uses is, you can apply XIT to move it to where the received signal is in the waterfall. 73 Chen, W7AY ___ 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 PSK31 with Digipan
Yes transmit is restricted - to the 2.7 (or 2.8) kHz filter. Hence the request to allow transmit using the 6 KHz filter, at least to same extent as receive (up to 4KHz currently). Bob NW8L On Fri, Sep 19, 2008 at 3:22 PM, Don Wilhelm <[EMAIL PROTECTED]> wrote: > Bob, > > Receive should work, but transmit will not - I believe it is restricted in > the firmware. > > 73, > Don W3FPR > > Bob Cunnings wrote: >> >> Yes, many of us know all this, but it's still nice, under benign >> conditions, to operate using a wider waterfall for both transmit and >> receive. I often operated PSK on my Orion using the 6kHz filter, it's >> fun to see pretty much all the PSK activity on the band at once - >> context, right? When I've opened up the BW like this I always disable >> AGC anyway. When the going gets tough, I narrow the BW. >> >> Since I paid for the 6kHz filter, I'd like to use it on DATA A if I >> choose, since there is no technical limitation in the K3 preventing it >> AFAIK. >> >> Bob NW8L >> >> On Fri, Sep 19, 2008 at 1:35 PM, Don Wilhelm <[EMAIL PROTECTED]> wrote: >> >>> >>> Dave, >>> >>> OTOH, best results with AFSK is to use a narrow receive filter. It keeps >>> strong undesired signals out of the passband. >>> Strong undesired signals in the passband cause a reduction of receiver >>> gain >>> because the AGC reacts to them. >>> Sure, the computer can handle and display them, but if the receiver gain >>> is >>> reduced because of a strong signal that just came on, your chances of >>> maintaining solid print is reduced. >>> >>> Do as you choose, but I prefer to tune my data mode signals just like any >>> other - with the VFO knob, and use a narrow filter to get rid of the >>> 'other >>> trash' on the band. >>> >>> 73, >>> Don W3FPR >>> >>> >>> Dave Quick - KØEKL wrote: >>> I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. Being able to see ~6 Khz of spectrum in the waterfall window would be great. >> > ___ 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 PSK31 with Digipan
Bob, Receive should work, but transmit will not - I believe it is restricted in the firmware. 73, Don W3FPR Bob Cunnings wrote: Yes, many of us know all this, but it's still nice, under benign conditions, to operate using a wider waterfall for both transmit and receive. I often operated PSK on my Orion using the 6kHz filter, it's fun to see pretty much all the PSK activity on the band at once - context, right? When I've opened up the BW like this I always disable AGC anyway. When the going gets tough, I narrow the BW. Since I paid for the 6kHz filter, I'd like to use it on DATA A if I choose, since there is no technical limitation in the K3 preventing it AFAIK. Bob NW8L On Fri, Sep 19, 2008 at 1:35 PM, Don Wilhelm <[EMAIL PROTECTED]> wrote: Dave, OTOH, best results with AFSK is to use a narrow receive filter. It keeps strong undesired signals out of the passband. Strong undesired signals in the passband cause a reduction of receiver gain because the AGC reacts to them. Sure, the computer can handle and display them, but if the receiver gain is reduced because of a strong signal that just came on, your chances of maintaining solid print is reduced. Do as you choose, but I prefer to tune my data mode signals just like any other - with the VFO knob, and use a narrow filter to get rid of the 'other trash' on the band. 73, Don W3FPR Dave Quick - KØEKL wrote: I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. Being able to see ~6 Khz of spectrum in the waterfall window would be great. ___ 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: Ferrite, toroids and the KX1
Just to confuse the subject... ;^} I am running a KX1 with an antenna lenght of 21' and a 'ground' length of 21'. The KXAT can match these to < 1.2:1 on 40/30/20 with little effort. I'm taking the approach of trying to use a ferrite toroid based inductive load in series with the antennna wire. By trail and error, I have constructed a F50 toroid (mix unknown but the whole toroid is plain black) that measures out at 40uH and ~800X at 3.55 Mhz using an MFJ-269 Pro This weekend I intend to try inserting this between the KX1 BNC socket and the antenna wire and, if I have the time, in the middle, to see if the KXAT can give me a match... I don't think end loading will be practical... Any input from the antenna guru's out there would be welcomed... Dave KK7SS ___ 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] Toroids frequency range and baluns
On Fri, 19 Sep 2008 10:21:44 -0700, Ron D'Eau Claire wrote: >The balun doesn't have any effect on the efficiency of the antenna unless it >involves lots of coax at high SWR such as the big coil of coax some Hams use >for a "choke balun". (They're FB as long as the SWR is low but, like any >coax, the losses go up with the SWR.) WRONG! There are three fundamental cases of ferrite "baluns" or chokes. 1) A choke wound with coax 2) a choke wound with parallel wires (bifilar) 3) a transformer (voltage balun). Case #1: Coax contains 100% of the differential power (transmitter feeding antenna) within the dielectric. The ferrite core of a COAX CHOKE sees ONLY the common mode voltage and current. If the impedance of the choke is high enough, the current is very small, so the dissipation in the choke is very small. Case #2: A choke with a bifilar winding (that is, two parallel wires, NOT coax) puts a significant fraction of the transmitted power in the core. This is "leakage" flux from the bifilar winding (really a short length of parallel wire transmission line). This leakage flux is typically 30% of the transmitted power, and is NOT related to common mode current. Case #3: A VOLTAGE balun is VERY different -- it puts 100% of the transmitted power in the ferrite. All of this is discussed in the tutorials, previously referenced. BTW -- earlier work and publications by W7EL, W2DU, and W1JR are all very good, but they were done 30 years ago. My work builds on theirs, and is considerably more advanced. Also, the #31 material that is so useful for HF chokes was developed only a few years ago. 73, Jim K9YC ___ 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] Ferrite transformer losses, 43-foot vertical and the K3
Because of some earlier discussions here, I wanted to actually measure losses in a 4:1 ferrite transformer. I wanted this info as I have a home-brew 43-foot vertical and these transformers are what seem to be recommended for "matching" to this antenna. I used a FT240-61 ferrite toroid which has a permeability of 125. I chose 16-gauge speaker wire to experiment with. This is because I want to eventually use high voltage wire, and 16-gauge is the largest gauge 2-conductor high-voltage wire I could find (McMaster-Carr 9634T701 @ $2.65/foot). I built a 4:1 unun, as I am feeding an unbalanced vertical antenna. And I decided to go with a voltage balun as this is a simpler structure than a current balun or unun. With a little experimentation, I was able to build a very good 1.8-30 MHz 4:1 unun. This consists of 12-turns of the 16-gauge speaker wire on the FT-240-61. As the voltage balun is a little inductive causing degradation at the higher frequencies, I tuned this out with a 33pf capacitor across the 50 ohm input. This gave me a transformer with 1.2:1 SWR at 1.8 MHz, but less than 1.1:1 from 3.5-30 MHz. In order to measure loss, I built a second identical transformer and connected these back-to-back. I measured insertion loss with both an Array Solutions PowerMaster, and a Tektronix TDS-2200 digital oscilloscope. I made all measurements with 20 watts of RF power on my workbench. Bottom line: Loss through both transformers was less than ½-watt (20 watts forward power) from 1.8-30 MHz. This is just a little over 1% of loss in each transformer. Even if my measurements are off by a factor of two, this is still pretty much insignificant loss. Next I installed one of these transformers at the base of my 43-foot vertical. My radial system isn't the best in the world because of the space I'm restricted to. I have about a dozen random-length radials with lengths up to about 50-feet. My transmission line is 60-feet of Andrew ½-inch Heliax that transitions to a 3-foot section of LMR-400 inside my house going to the K3. My Array Solutions PowerMaster is located immediately at the output of the K3. The SWR measured with the PowerMaster was as follows: 160: 4.9:1 80: 6.3:1 60: 3.3:1 40: 3.2:1 30: 3.2:1 20: 3:1 17: 2.1:1 15: 1.9:1 12: 1.4:1 10: 2.2:1 Obviously, these mismatches are easily handled by the internal K3 auto-tuner. And line loss is minimal because the mismatch isn't very high, and the transmission line is very low loss. The 16-gauge speaker wire on the FT240-61 core seems to be working fine even with 600 watts out of my ALS-600 amplifier. However, I do have some of that expensive McMaster-Carr high-voltage wire on order. Anyway, I just thought I'd share these measurements with the group. Phil - AD5X ___ 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 PSK31 with Digipan
Yes, many of us know all this, but it's still nice, under benign conditions, to operate using a wider waterfall for both transmit and receive. I often operated PSK on my Orion using the 6kHz filter, it's fun to see pretty much all the PSK activity on the band at once - context, right? When I've opened up the BW like this I always disable AGC anyway. When the going gets tough, I narrow the BW. Since I paid for the 6kHz filter, I'd like to use it on DATA A if I choose, since there is no technical limitation in the K3 preventing it AFAIK. Bob NW8L On Fri, Sep 19, 2008 at 1:35 PM, Don Wilhelm <[EMAIL PROTECTED]> wrote: > Dave, > > OTOH, best results with AFSK is to use a narrow receive filter. It keeps > strong undesired signals out of the passband. > Strong undesired signals in the passband cause a reduction of receiver gain > because the AGC reacts to them. > Sure, the computer can handle and display them, but if the receiver gain is > reduced because of a strong signal that just came on, your chances of > maintaining solid print is reduced. > > Do as you choose, but I prefer to tune my data mode signals just like any > other - with the VFO knob, and use a narrow filter to get rid of the 'other > trash' on the band. > > 73, > Don W3FPR > > > Dave Quick - KØEKL wrote: >> >> I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. >> Being able to see ~6 Khz of spectrum in the waterfall window would be >> great. >> >> -Dave Quick KØEKL >> >> >> >> >> -Original Message- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, W4TV >> Sent: Friday, September 19, 2008 11:55 AM >> To: 'zibs'; elecraft@mailman.qth.net >> Subject: RE: [Elecraft] K3 PSK31 with Digipan >> >> >> >>> >>> But in Data A mode, one can expand the receive width out to >>> 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or >>> above 2800 Hz, power output will drop to zero. >>> >> >> Perhaps all of the data modes should be limited to 2.8 KHz of DSP >> bandwidth >> (or even 2 KHz). That's more than enough for any reasonable amateur data >> mode and will keep users from shooting themselves in the foot. >> >> >> > > ___ > 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 - s/n 1591 - TCXO module question
Hello, I had the same problem and solved it without trimming the leads. The module dont't rest against the socket but sits above it. No trouble till now... just a week ! Is there a builder alert on this subject ? 73 Luc/F6HJO - Original Message - From: "Ann and/or Bill Tekatch" <[EMAIL PROTECTED]> To: Sent: Wednesday, September 17, 2008 3:53 AM Subject: [Elecraft] K3 - s/n 1591 - TCXO module question > > Hello everyone. > > Things are going really well with the build of s/n 1591 (I had the power > on tonight for the initial power-up test - so exciting!!!) but tonight > when I went to put the TCXO module on the KREF board, I discovered that > the leads on the module are too long to allow its bottom to "rest > against the socket" as described on p.46 of the assembly manual. Is this > a problem? Do I need to trim the leads? > FYI the leads are 1/4" long and a gap of 1/16" is left between the > bottom of the TCXO module and its socket when it is fully engaged. > > BTW for those of you keeping track of delivery times: > > K3 kit ordered May 9 > Katiegram August 27 > Delivery on Sept. 5 > > I really appreciated receiving this info. when I was awaiting my K3 - my > thanks to everyone who shared this info. on the reflector! > > Thanks for looking & 73 > > Ann T. > ___ > 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 PSK31 with Digipan
Dave, OTOH, best results with AFSK is to use a narrow receive filter. It keeps strong undesired signals out of the passband. Strong undesired signals in the passband cause a reduction of receiver gain because the AGC reacts to them. Sure, the computer can handle and display them, but if the receiver gain is reduced because of a strong signal that just came on, your chances of maintaining solid print is reduced. Do as you choose, but I prefer to tune my data mode signals just like any other - with the VFO knob, and use a narrow filter to get rid of the 'other trash' on the band. 73, Don W3FPR Dave Quick - KØEKL wrote: I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. Being able to see ~6 Khz of spectrum in the waterfall window would be great. -Dave Quick KØEKL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, W4TV Sent: Friday, September 19, 2008 11:55 AM To: 'zibs'; elecraft@mailman.qth.net Subject: RE: [Elecraft] K3 PSK31 with Digipan But in Data A mode, one can expand the receive width out to 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power output will drop to zero. Perhaps all of the data modes should be limited to 2.8 KHz of DSP bandwidth (or even 2 KHz). That's more than enough for any reasonable amateur data mode and will keep users from shooting themselves in the foot. ___ 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 PSK31 with Digipan
I'd like to be able to transmit in Data-A mode through my 6 Khz AM filter. Being able to see ~6 Khz of spectrum in the waterfall window would be great. -Dave Quick KØEKL -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, W4TV Sent: Friday, September 19, 2008 11:55 AM To: 'zibs'; elecraft@mailman.qth.net Subject: RE: [Elecraft] K3 PSK31 with Digipan > But in Data A mode, one can expand the receive width out to > 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 > or above 2800 Hz, power output will drop to zero. Perhaps all of the data modes should be limited to 2.8 KHz of DSP bandwidth (or even 2 KHz). That's more than enough for any reasonable amateur data mode and will keep users from shooting themselves in the foot. > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of zibs > Sent: Friday, September 19, 2008 10:28 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 PSK31 with Digipan > > > > But in Data A mode, one can expand the receive width out to 4 kHz > using the 2.7 kHz filter. If you attempt to transmit below 200 or > above 2800 Hz, power output will drop to zero. > > The user needs to be aware when clicking on the waterfall as one can > receive signals on frequencies in which they cannot transmit. > > Steve N9SZ > > > > Lyle Johnson wrote: > > > > > Just getting my new K3 working on PSK31 and noticed that > it seems > > to be > > important to limit the range of the transmit frequency... > > > > I just swept my K3 in DATA A mode.using the LINE IN jack > for sourcing > > the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz > > using a 2.,8 kHz IF filter. > > > > Be sure you don't have TxEQ set to restrict the transmit bandwidth. > > TxEQ is active for *all* Tx audio paths in all modes. For > DATA A or > > DATA AFSK, it should be flat. > > > > 73, > > > > Lyle KK7P > > > > > > ___ > > 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 > > > > > > -- > View this message in context: > http://n2.nabble.com/K3-PSK31-with-Digipan-tp1100818p1100983.html > Sent from the Elecraft mailing list archive at Nabble.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 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] Toroids frequency range and baluns
Bob, To further add to the confusion, I will throw in my 2 cents worth too. Let me say that a balun wound on a powdered iron core is highly dependent on the inductance. The inductive reactance should be at least 5 times the feedline impedance at the balun's antenna side for it to be effective, so how well it works depends on the antenna too. Also as the frequency gets higher, the resistive loss through the balun becomes more significant and the interwinding capacitance becomes important. For all those reasons (and a few more too), it is common to use a ferrite core rather than a powdered iron core for a balun. The inductance per turn is much higher, so fewer turns are needed to satisfy the inductance requirement at the low frequency end of the scale and the wire resistance and winding capacitance is less at the high frequency end. The core for a balun can be lossy at the frequency of use. You can think of a current balun as a transmission line inside a choke (the coil-of-coax type baluns are a perfect example). The differential signal travels on the transmission line (inside the coax) while the common mode signal on the outside of the coax (the one you want to suppress) encounters the choke impedance. The advantage of a ferrite core is that the transmission line length is shorter than a balun built with a powdered iron core - fewer turns = lower resistance, lower capacitance. I know that did not answer your question directly, but it all depends on the inductance of your balun, the antenna side actual feed impedance, the wire resistance, and the capacitance across the transmission line inside that balun. I don't have enough data to provide a definite answer. 73, Don W3FPR Solosko, Robert B (Bob) wrote: Hello All, There have been several e-mail threads recently about ferrite cores and about baluns and transmission line loss with high SWR. Related to this is a question that I haven't seen addressed anywhere - toroids all have a specified frequency range but what happens when they're used outside of that range? To be more specific, I have a multiband fan dipole fed with ladder line into a 4:1 current balun that then connects to my rig through about 5 feet of RG-8. I made the balun using a pair of T200-2 powder iron cores, which have a specified frequency range of 0.25 to 10 MHz. Since I'm using this single antenna from 160m to 10m, I'm way beyond the specified frequency range of the cores - is the balun likely to be very inefficient above it 10MHz? The antenna seems to work very well on 40m and 20m and OK on 15m. Since the band conditions haven't been particularly good in the last few years that I've been using this antenna, I can't tell whether my lack of many QSOs on 15m and above is due to inefficiencies in the balun or to band conditions? What do you think? Bob W1SRB ___ 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 [DISPLAY] Button
Ron, Upon re-reading your post, the voltage you measured at U3 pin 7 is about what would be expected with a 13.5 volt power source. Did you measure the U6 pin 5 voltage on the lead of the chip or at the socket. If you measured at the socket, try at the chip lead because you may have a pin bent under the firmware chip or a bad socket connection. If you measure 2.633 (or 2.699) voltas on the actual microprocessor pin, I believe you may have a bad input on that microprocessor - all the display calculations are done in the firmware. 73, Don W3FPR Ron McCurdy wrote: I'm building a K2. The [DISPLAY] button shows a voltage of less than 2 volts and it is erratic and, the current is shown as 0.00. I have checked the voltages at U3 and they are 2.633 at pin 5, 6, & 7, and 13.75 at pins 2 & 3. Pin 1 is .571. I measured the voltage at Vsense on the MCU pin 5 and it was 2.669. Where could I be losing the signal to the lcd?? Ron, KE5QDA ___ 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM ___ 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] Toroids frequency range and baluns
Bob W1SRB writes: >There have been several e-mail threads recently about ferrite cores and about baluns and transmission line loss with high SWR. Related to this is a question that I haven't seen addressed anywhere - toroids all have a specified frequency range but what happens when they're used outside of that range? > To be more specific, I have a multiband fan dipole fed with ladder line into a 4:1 current balun that then connects to my rig through about 5 feet of RG-8. I made the balun using a pair of T200-2 powder iron cores, which have a specified frequency range of 0.25 to 10 MHz. Since I'm using this single antenna from 160m to 10m, I'm way beyond the specified frequency range of the cores - is the balun likely to be very inefficient above it 10MHz? The antenna seems to work very well on 40m and 20m and OK on 15m. Since the band conditions haven't been particularly good in the last few years that I've been using this antenna, I can't tell whether my lack of many QSOs on 15m and above is due to inefficiencies in the balun or to band conditions? What do you think? The balun doesn't have any effect on the efficiency of the antenna unless it involves lots of coax at high SWR such as the big coil of coax some Hams use for a "choke balun". (They're FB as long as the SWR is low but, like any coax, the losses go up with the SWR.) The only function of the balun in your setup is to manage the flow of RF current to keep it off of the *outside* of the coax and your rig. That's only a concern if the voltages are sufficient to cause your rig to be "hot" with RF so that touching the rig changes the antenna tuning or you get RF feedback in to the rig through the mic or you have other operational issues. As long as you don't have those issues, you don't need a balun at all. To more directly answer your question, the balun you have probably works as well at 30 MHz as it does at 1.8 MHz. The T200-2 cores will show a high impedance to the RF currents across the HF range. That's all you need. Ron AC7AC ___ 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 [DISPLAY] Button
Ron, Do you have the Control Board P7 jumpered between pins 2 and 3 (marked INT)? If so, what is the voltage at P7 pin 3? How about pin 2? - both should be about 0.3 volts below your supply voltage. What is your supply voltage when the K2 is powered on? (Measure at the anode of RF Board D10). What is the voltage at the cathode of D13? What is the voltage at each end of R9 - one end should be the same as the cathode of D13 and the other end should be very close to 20% of the voltage at the cathode of D13. Control Board U3 pins 5, 6, and 7 should also have the same voltage. If any of these measurements are incorrect, look for the soldering problem - connection not adequately soldered or a solder bridge. Also check to be certain R9 and R10 are the correct values. 73, Don W3FPR Ron McCurdy wrote: I'm building a K2. The [DISPLAY] button shows a voltage of less than 2 volts and it is erratic and, the current is shown as 0.00. I have checked the voltages at U3 and they are 2.633 at pin 5, 6, & 7, and 13.75 at pins 2 & 3. Pin 1 is .571. I measured the voltage at Vsense on the MCU pin 5 and it was 2.669. Where could I be losing the signal to the lcd?? ___ 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 PSK31 with Digipan
Users of narrow-band digital modes such as PSK31 need to remember the difference between transmit and receive in the way we perceive dynamic range. On transmit, a 10 dB difference is a factor of 10 in power. If your power meter only goes up to 5W when you were expecting 50W, you will likely perceive this as a serious issue. Even a 3 dB difference shows up as a factor of 2 in transmitted power. On receive, a difference of 10 dB is only a couple of S-units and well within normal signal variability on HF. Looking at a normal waterfall, a 10 dB variation across the receive bandpass is barely noticeable as a slight change in colour or intensity of the background noise. Even within the transmit filter bandpass, relatively small variations in response will be more easily detectable on TX than RX. K8ZOA's plot of the 2.7 kHz filter response shows a ripple of around 2 dB, which is probably next to undetectable on RX, but is easily noticeable on TX as a change in transmitted power. With wide DSP bandwidth settings, the K3 can receive signals at frequencies where the transmitted power level through the transmit filter would be very low. The simplest way to avoid this problem is not to use DSP width settings that are wider than the transmit filter bandwidth. That way you won't receive normal signals at frequencies where your transmitted power would be at QRPp levels. You should also avoid using the shoulders of the filter response, i.e. the last 200 Hz or so at either edge of the 2.7 kHz filter bandwidth. Alternatively, you can use a wide DSP bandwidth for scanning the band, but once you find a signal you want to work, move your dial so that the desired signal falls within the optimum range. Many PSK31 programs have an "align" or "optimize" macro capability, which allows you to center a signal in the waterfall with a single mouse click. It does so by retuning the radio so the chosen signal ends up on the designated frequency (e.g. 1500 Hz). Unfortunately, AFAIK DigiPan does not have this capability. On a related point, in order to suppress audio harmonics I also like to try to avoid transmitting digital modes on low audio frequencies. This is not a significant problem on voice modes, but audio harmonics on PSK31 show up on the air as spurious transmitted signals. Using a wide filter on transmit could make it harder to avoid transmitting harmonics of your audio signal, so personally I would not want to use wideband TX in DATA A. 73, Rich VE3KI Steve N9SZ wrote: > > But in Data A mode, one can expand the receive width out to 4 kHz using the > 2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power > output will drop to zero. > > The user needs to be aware when clicking on the waterfall as one can receive > signals on frequencies in which they cannot transmit. > > Steve N9SZ > > > > Lyle Johnson wrote: > > > > > Just getting my new K3 working on PSK31 and noticed that it seems to be > > > important to limit the range of the transmit frequency... > > > > I just swept my K3 in DATA A mode.using the LINE IN jack for sourcing > > the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz > > using a 2.,8 kHz IF filter. > > > > Be sure you don't have TxEQ set to restrict the transmit bandwidth. > > TxEQ is active for *all* Tx audio paths in all modes. For DATA A or > > DATA AFSK, it should be flat. > > > > 73, > > > > Lyle KK7P > > > > ___ 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 PSK31 with Digipan
> But in Data A mode, one can expand the receive width out to > 4 kHz using the 2.7 kHz filter. If you attempt to transmit > below 200 or above 2800 Hz, power output will drop to zero. Perhaps all of the data modes should be limited to 2.8 KHz of DSP bandwidth (or even 2 KHz). That's more than enough for any reasonable amateur data mode and will keep users from shooting themselves in the foot. > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of zibs > Sent: Friday, September 19, 2008 10:28 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 PSK31 with Digipan > > > > But in Data A mode, one can expand the receive width out to 4 > kHz using the 2.7 kHz filter. If you attempt to transmit > below 200 or above 2800 Hz, power output will drop to zero. > > The user needs to be aware when clicking on the waterfall as > one can receive signals on frequencies in which they cannot > transmit. > > Steve N9SZ > > > > Lyle Johnson wrote: > > > > > Just getting my new K3 working on PSK31 and noticed that > it seems > > to be > > important to limit the range of the transmit frequency... > > > > I just swept my K3 in DATA A mode.using the LINE IN jack > for sourcing > > the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz > > using a 2.,8 kHz IF filter. > > > > Be sure you don't have TxEQ set to restrict the transmit bandwidth. > > TxEQ is active for *all* Tx audio paths in all modes. For > DATA A or > > DATA AFSK, it should be flat. > > > > 73, > > > > Lyle KK7P > > > > > > ___ > > 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 > > > > > > -- > View this message in context: > http://n2.nabble.com/K3-PSK31-with-Digipan-tp1100818p1100983.html > Sent from the Elecraft mailing list archive at Nabble.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 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 config problem
Hi Brett, I believe so. 73, Eric Brett Howard wrote: >From what I understand this feature is supposed to allow one to put his two VFO's in different bands even without the KRX3 as well.. ___ 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] K2 [DISPLAY] Button
I'm building a K2. The [DISPLAY] button shows a voltage of less than 2 volts and it is erratic and, the current is shown as 0.00. I have checked the voltages at U3 and they are 2.633 at pin 5, 6, & 7, and 13.75 at pins 2 & 3. Pin 1 is .571. I measured the voltage at Vsense on the MCU pin 5 and it was 2.669. Where could I be losing the signal to the lcd?? Ron, KE5QDA ___ 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 PSK31 with Digipan
Steve, I would think that most users are aware that they are transmitting through the 2.7 kHz (or 2.8) filter - after all, they set it up that way in the menu (and if they did not, they would get a TX FL error message). So I should think that they would not expect to transmit an audio tone outside the bounds of that filter. If the user has configured a wider filter for receive than for transmit, the "problem" you state should be fairly obvious. The signal outside the 2.7 kHz bandpass will be significantly weaker than if it were inside the passband. The soundcard may still be able to decode it, but I see nothing that really needs any kind of alert in the manual, it is simply a natural consequence of 'how things work'. 73, Don W3FPR zibs wrote: But in Data A mode, one can expand the receive width out to 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power output will drop to zero. The user needs to be aware when clicking on the waterfall as one can receive signals on frequencies in which they cannot transmit. Steve N9SZ Lyle Johnson wrote: > Just getting my new K3 working on PSK31 and noticed that it seems to be > > important to limit the range of the transmit frequency... I just swept my K3 in DATA A mode.using the LINE IN jack for sourcing the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz using a 2.,8 kHz IF filter. Be sure you don't have TxEQ set to restrict the transmit bandwidth. TxEQ is active for *all* Tx audio paths in all modes. For DATA A or DATA AFSK, it should be flat. ___ 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 config problem
>From what I understand this feature is supposed to allow one to put his two VFO's in different bands even without the KRX3 as well... Am I mistaken here? On Fri, Sep 19, 2008 at 8:31 AM, Eric Swartz - WA6HHQ, Elecraft <[EMAIL PROTECTED]> wrote: > We're actually working on the firmware for this now. :-) > > Stay tuned! > > 73, > > Eric WA6HHQ > _..._ > -Original Message- > From: Stewart Baker <[EMAIL PROTECTED]> > Date: Friday, Sep 19, 2008 4:27 am > Subject: Re: [Elecraft] KRX3 config problem > > Yes, this fairly major feature of the K3 is missing. > > No timescale for it's implementation been given. > > 73 > Stewart G3RXQ > On Fri, 19 Sep 2008 20:15:13 +0900, a.yoshida wrote: >> Just finished assembling my KRX3. >> Everything seems to work as advertized except "VFO IND " > setting. >> >> When I turn VFO A to set "YES" I see "UNAVAIL" in VFO B >> I am reffering "Installation and Operation manual Rev B August > 20, 2008". >> Am I missing something ??? >> 73 >> aki ja1nlx > > ___ > 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] Toroids frequency range and baluns
Bob W1SRB writes: >There have been several e-mail threads recently about ferrite cores and about baluns and transmission line loss with high SWR. Related to this is a question that I haven't seen addressed anywhere - toroids all have a specified frequency range but what happens when they're used outside of that range? > To be more specific, I have a multiband fan dipole fed with ladder line into a 4:1 current balun that then connects to my rig through about 5 feet of RG-8. I made the balun using a pair of T200-2 powder iron cores, which have a specified frequency range of 0.25 to 10 MHz. Since I'm using this single antenna from 160m to 10m, I'm way beyond the specified frequency range of the cores - is the balun likely to be very inefficient above it 10MHz? The antenna seems to work very well on 40m and 20m and OK on 15m. Since the band conditions haven't been particularly good in the last few years that I've been using this antenna, I can't tell whether my lack of many QSOs on 15m and above is due to inefficiencies in the balun or to band conditions? What do you think? Bob, you are mixing apples and oranges. Current (choke) baluns (that use cores) are almost always built using ferrite cores, not powered iron. If you wanted to tune one to parallel resonance at some particular frequency, you might use iron, otherwise, you want ferrite that provides a high impedance to common-mode currents over a broad frequency range. A resistive component in this impedance is not a bad thing. Roy, W7EL, has a good description of balun operation here: http://www.eznec.com/Amateur/Articles/Baluns.pdf Wes N7WS ___ 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 config problem
That's great news Eric, can't wait... 73 Stewart G3RXQ On 19 Sep 2008 08:31:00 -0700, Eric Swartz - WA6HHQ, Elecraft wrote: > We're actually working on the firmware for this now. :-) > > Stay tuned! > > 73, > > Eric WA6HHQ > _..._ > -Original Message- > From: Stewart Baker <[EMAIL PROTECTED]> > Date: Friday, Sep 19, 2008 4:27 am > Subject: Re: [Elecraft] KRX3 config problem > > Yes, this fairly major feature of the K3 is missing. > > No timescale for it's implementation been given. > > 73 > Stewart G3RXQ > On Fri, 19 Sep 2008 20:15:13 +0900, a.yoshida wrote: >> Just finished assembling my KRX3. >> Everything seems to work as advertized except "VFO IND " > setting. > >> When I turn VFO A to set "YES" I see "UNAVAIL" in VFO B >> I am reffering "Installation and Operation manual Rev B August > 20, 2008". >> Am I missing something ??? >> 73 >> aki ja1nlx ___ 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 PSK31 with Digipan
zibs wrote: But in Data A mode, one can expand the receive width out to 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power output will drop to zero. The user needs to be aware when clicking on the waterfall as one can receive signals on frequencies in which they cannot transmit. At present there is no wideband Tx in DATA A. You can prevent the problem by not enabling a wider filter in receive for Data modes. Currently the filter configuration does not support separate filters for DATA and SSB modes, so this would also inhibit ESSB operation. We'll put it on the list. Thanks! 73, Lyle KK7P Steve N9SZ Lyle Johnson wrote: > Just getting my new K3 working on PSK31 and noticed that it seems to be > > important to limit the range of the transmit frequency... I just swept my K3 in DATA A mode.using the LINE IN jack for sourcing the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz using a 2.,8 kHz IF filter. Be sure you don't have TxEQ set to restrict the transmit bandwidth. TxEQ is active for *all* Tx audio paths in all modes. For DATA A or DATA AFSK, it should be flat. 73, Lyle KK7P ___ 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 PSK31 with Digipan
I have not noticed this with my K3, using both a cheap SoundBlaster audio card and an expensive E-MU card. My first suspicion would be something impeding the audio getting to the transmitter - K3 equalization, sound card equalization. Are you using the line in audio source? Check settings for it. I can run PSK31 with only 2 audio cables between the sound card and radio line in/line out. Monty K2DLJ Just getting my new K3 working on PSK31 and noticed that it seems to be important to limit the range of the transmit frequency. Using Digipan and K3 Data A mode, if I select a transmit frequency on the waterfall that is too high or low, I will get very low (or zero) power output. It seems like one needs to keep this frequency centered in the transmit filter bandpass (I use the 2.7 kHz filter for transmit) -- so should I always transmit near 1.3 kHz? I never noticed needing to limit this range when using my IC-756 with Digipan. Steve N9SZ -- View this message in context: http://n2.nabble.com/K3-PSK31-with-Digipan-tp1100818p1100818.html Sent from the Elecraft mailing list archive at Nabble.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 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 config problem
We're actually working on the firmware for this now. :-) Stay tuned! 73, Eric WA6HHQ _..._ -Original Message- From: Stewart Baker <[EMAIL PROTECTED]> Date: Friday, Sep 19, 2008 4:27 am Subject: Re: [Elecraft] KRX3 config problem Yes, this fairly major feature of the K3 is missing. No timescale for it's implementation been given. 73 Stewart G3RXQ On Fri, 19 Sep 2008 20:15:13 +0900, a.yoshida wrote: > Just finished assembling my KRX3. > Everything seems to work as advertized except "VFO IND " setting. > > When I turn VFO A to set "YES" I see "UNAVAIL" in VFO B > I am reffering "Installation and Operation manual Rev B August 20, 2008". > Am I missing something ??? > 73 > aki ja1nlx ___ 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 PSK31 with Digipan
But in Data A mode, one can expand the receive width out to 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power output will drop to zero. The user needs to be aware when clicking on the waterfall as one can receive signals on frequencies in which they cannot transmit. Steve N9SZ Lyle Johnson wrote: > > > Just getting my new K3 working on PSK31 and noticed that it seems to be > > > important to limit the range of the transmit frequency... > > I just swept my K3 in DATA A mode.using the LINE IN jack for sourcing > the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz > using a 2.,8 kHz IF filter. > > Be sure you don't have TxEQ set to restrict the transmit bandwidth. > TxEQ is active for *all* Tx audio paths in all modes. For DATA A or > DATA AFSK, it should be flat. > > 73, > > Lyle KK7P > > > ___ > 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 > > -- View this message in context: http://n2.nabble.com/K3-PSK31-with-Digipan-tp1100818p1100983.html Sent from the Elecraft mailing list archive at Nabble.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] K2 freeze at startup... need advice
Jean-Francois, Saying what happened to U6 is only a guess, but I would suggest static damage. Not necessarily static damage that happened recently, but sometime in the past. However, if you had a nearby lightning strike that caused a charge to build on your microphone cable or paddle cable, that may be the reason. One of the aspects of static damage is that it often does not fail immediately, but at some time in the future. I suspect that is what happened. That is why we hear so much emphasis placed on using an anti-static mat and a wrist strap when working with active devices. Electronic devices are becoming more and more static sensitive, which is a result not only of the technology used, but also from stuffing more and more circuits into a smaller and smaller size. Before active devices are mounted into a circuit, they are quite susceptible and must be handled with care. 73, Don W3FPR Jean-François Ménard wrote: You are right!! After U6 removed RP4 pin 5 and 6 are now at 81k ohm!! U6 must be replaced Thanks for your help. But one question remains. What did happen to U6 ?? Jean-François Ménard Le 08-09-19 à 09:52, Don Wilhelm <[EMAIL PROTECTED]> a écrit : Jean-Francois, Sounds like you are homing in on the problem. Try removing the microprocessor and measuring the resistance between RP4 pins 5 and 6. If it is normal (81K), then you have a bad microprocessor input at pin 30. If so, replacement of U6 is the only solution I know about. 73, Don W3FPR Jean-François Ménard wrote: I also found another thing. Resistance check of Pin 7 and 8 of RP4 on the control board give me 81K ohm, but PIN 5 and 6 give me 19K ohm... should be 81K ohm too !!! Le 08-09-19 à 09:29, Jean-François Ménard a écrit : It seems that a resistence check on the control board give me a hint. U6 PIN 29 are inside spec, but PIN 30 give me only 16K ohm and should be higher... around 80K ohm to 90k The key jack seems to be good, R1 and R2 are OK. Re-insert controler on RF board, nothing change Le 08-09-19 à 08:11, Don Wilhelm a écrit : Jean-Francois, It certainly could be a faulty key jack, but it could be a microprocessor problem too. Turn the power down to zero for further testing. Then check the voltage at the end of R1 and R2 near the key jack - they are easy to reach if you remove the left side panel. The voltage should be near 5 volts if there is nothing pulling those inputs down. Remember that the DOT line and the PTT line are one and the same on the K2, so if that line is low the problem nay be in the key jack or on the Front Panel board. Should you find either the DOT or DASH lines near zero volts, turn power off and make resistance checks to find out if there is a short (maybe a solder bridge that has been dormant for a long time). Those signal lines run direct to the microprocessor, so there is only the jacks, PC traces, and the microprocessor involved. 73, Don W3FPR Jean-François Ménard wrote: It seems that something let my K2 stuck in TX mode. I removed all module and put appropriate jumpers (unmod kit). Still in TX when powered ON. I checked this using my DL2 dummy load with my multimeter I always have output power !! Could it be a defective KEY jack that is jammed? I have nothing plugged.. Le 08-09-18 à 23:33, Don Wilhelm a écrit : Jean, This is strange - the second case of similar behavior reported on the reflector today. Could it be a case of the 'phase of the moon'? When the K2 is in transmit state, the behavior will be as you describe - no buttons operate but the K2 displays the frequency. Check to see if your K2 is somehow stuck in transmit. The easiest way is to check the state of the 8R and 8T voltages. You can checkby measuring the DC voltage at the anodes of D6 and D7. During receive, the voltage at D6 anode should be about 8 volts and the voltage at D7 should be near zero volts. If the K2 is 'stuck in transmit', those voltages will be reversed. If your K2 is indeed 'stuck in transmit', try removing the key plug and the microphone - if something external is creating that transmit condition, it should be OK with those cables unplugged. 73, Don W3FPR Jean-François Ménard wrote: Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! De Jean-François Ménard / VA2SS No virus found in t
Re: [Elecraft] K3 PSK31 with Digipan
> Just getting my new K3 working on PSK31 and noticed that it seems to be > > important to limit the range of the transmit frequency... I just swept my K3 in DATA A mode.using the LINE IN jack for sourcing the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz using a 2.,8 kHz IF filter. Be sure you don't have TxEQ set to restrict the transmit bandwidth. TxEQ is active for *all* Tx audio paths in all modes. For DATA A or DATA AFSK, it should be flat. 73, Lyle KK7P ___ 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 freeze at startup... need advice
You are right!! After U6 removed RP4 pin 5 and 6 are now at 81k ohm!! U6 must be replaced Thanks for your help. But one question remains. What did happen to U6 ?? Jean-François Ménard Le 08-09-19 à 09:52, Don Wilhelm <[EMAIL PROTECTED]> a écrit : Jean-Francois, Sounds like you are homing in on the problem. Try removing the microprocessor and measuring the resistance between RP4 pins 5 and 6. If it is normal (81K), then you have a bad microprocessor input at pin 30. If so, replacement of U6 is the only solution I know about. 73, Don W3FPR Jean-François Ménard wrote: I also found another thing. Resistance check of Pin 7 and 8 of RP4 on the control board give me 81K ohm, but PIN 5 and 6 give me 19K ohm... should be 81K ohm too !!! Le 08-09-19 à 09:29, Jean-François Ménard a écrit : It seems that a resistence check on the control board give me a hint. U6 PIN 29 are inside spec, but PIN 30 give me only 16K ohm and should be higher... around 80K ohm to 90k The key jack seems to be good, R1 and R2 are OK. Re-insert controler on RF board, nothing change Le 08-09-19 à 08:11, Don Wilhelm a écrit : Jean-Francois, It certainly could be a faulty key jack, but it could be a microprocessor problem too. Turn the power down to zero for further testing. Then check the voltage at the end of R1 and R2 near the key jack - they are easy to reach if you remove the left side panel. The voltage should be near 5 volts if there is nothing pulling those inputs down. Remember that the DOT line and the PTT line are one and the same on the K2, so if that line is low the problem nay be in the key jack or on the Front Panel board. Should you find either the DOT or DASH lines near zero volts, turn power off and make resistance checks to find out if there is a short (maybe a solder bridge that has been dormant for a long time). Those signal lines run direct to the microprocessor, so there is only the jacks, PC traces, and the microprocessor involved. 73, Don W3FPR Jean-François Ménard wrote: It seems that something let my K2 stuck in TX mode. I removed all module and put appropriate jumpers (unmod kit). Still in TX when powered ON. I checked this using my DL2 dummy load with my multimeter I always have output power !! Could it be a defective KEY jack that is jammed? I have nothing plugged.. Le 08-09-18 à 23:33, Don Wilhelm a écrit : Jean, This is strange - the second case of similar behavior reported on the reflector today. Could it be a case of the 'phase of the moon'? When the K2 is in transmit state, the behavior will be as you describe - no buttons operate but the K2 displays the frequency. Check to see if your K2 is somehow stuck in transmit. The easiest way is to check the state of the 8R and 8T voltages. You can checkby measuring the DC voltage at the anodes of D6 and D7. During receive, the voltage at D6 anode should be about 8 volts and the voltage at D7 should be near zero volts. If the K2 is 'stuck in transmit', those voltages will be reversed. If your K2 is indeed 'stuck in transmit', try removing the key plug and the microphone - if something external is creating that transmit condition, it should be OK with those cables unplugged. 73, Don W3FPR Jean-François Ménard wrote: Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! De Jean-François Ménard / VA2SS --- --- -- No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM De Jean-François Ménard / VA2SS ___ 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 De Jean-François Ménard / VA2SS ___ 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/subscri
Re: [Elecraft] K2 freeze at startup... need advice
Jean-Francois, Sounds like you are homing in on the problem. Try removing the microprocessor and measuring the resistance between RP4 pins 5 and 6. If it is normal (81K), then you have a bad microprocessor input at pin 30. If so, replacement of U6 is the only solution I know about. 73, Don W3FPR Jean-François Ménard wrote: I also found another thing. Resistance check of Pin 7 and 8 of RP4 on the control board give me 81K ohm, but PIN 5 and 6 give me 19K ohm... should be 81K ohm too !!! Le 08-09-19 à 09:29, Jean-François Ménard a écrit : It seems that a resistence check on the control board give me a hint. U6 PIN 29 are inside spec, but PIN 30 give me only 16K ohm and should be higher... around 80K ohm to 90k The key jack seems to be good, R1 and R2 are OK. Re-insert controler on RF board, nothing change Le 08-09-19 à 08:11, Don Wilhelm a écrit : Jean-Francois, It certainly could be a faulty key jack, but it could be a microprocessor problem too. Turn the power down to zero for further testing. Then check the voltage at the end of R1 and R2 near the key jack - they are easy to reach if you remove the left side panel. The voltage should be near 5 volts if there is nothing pulling those inputs down. Remember that the DOT line and the PTT line are one and the same on the K2, so if that line is low the problem nay be in the key jack or on the Front Panel board. Should you find either the DOT or DASH lines near zero volts, turn power off and make resistance checks to find out if there is a short (maybe a solder bridge that has been dormant for a long time). Those signal lines run direct to the microprocessor, so there is only the jacks, PC traces, and the microprocessor involved. 73, Don W3FPR Jean-François Ménard wrote: It seems that something let my K2 stuck in TX mode. I removed all module and put appropriate jumpers (unmod kit). Still in TX when powered ON. I checked this using my DL2 dummy load with my multimeter I always have output power !! Could it be a defective KEY jack that is jammed? I have nothing plugged.. Le 08-09-18 à 23:33, Don Wilhelm a écrit : Jean, This is strange - the second case of similar behavior reported on the reflector today. Could it be a case of the 'phase of the moon'? When the K2 is in transmit state, the behavior will be as you describe - no buttons operate but the K2 displays the frequency. Check to see if your K2 is somehow stuck in transmit. The easiest way is to check the state of the 8R and 8T voltages. You can checkby measuring the DC voltage at the anodes of D6 and D7. During receive, the voltage at D6 anode should be about 8 volts and the voltage at D7 should be near zero volts. If the K2 is 'stuck in transmit', those voltages will be reversed. If your K2 is indeed 'stuck in transmit', try removing the key plug and the microphone - if something external is creating that transmit condition, it should be OK with those cables unplugged. 73, Don W3FPR Jean-François Ménard wrote: Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! De Jean-François Ménard / VA2SS No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM De Jean-François Ménard / VA2SS ___ 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 De Jean-François Ménard / VA2SS ___ 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM
Re: [Elecraft] K2 freeze at startup... need advice
I also found another thing. Resistance check of Pin 7 and 8 of RP4 on the control board give me 81K ohm, but PIN 5 and 6 give me 19K ohm... should be 81K ohm too !!! Le 08-09-19 à 09:29, Jean-François Ménard a écrit : It seems that a resistence check on the control board give me a hint. U6 PIN 29 are inside spec, but PIN 30 give me only 16K ohm and should be higher... around 80K ohm to 90k The key jack seems to be good, R1 and R2 are OK. Re-insert controler on RF board, nothing change Le 08-09-19 à 08:11, Don Wilhelm a écrit : Jean-Francois, It certainly could be a faulty key jack, but it could be a microprocessor problem too. Turn the power down to zero for further testing. Then check the voltage at the end of R1 and R2 near the key jack - they are easy to reach if you remove the left side panel. The voltage should be near 5 volts if there is nothing pulling those inputs down. Remember that the DOT line and the PTT line are one and the same on the K2, so if that line is low the problem nay be in the key jack or on the Front Panel board. Should you find either the DOT or DASH lines near zero volts, turn power off and make resistance checks to find out if there is a short (maybe a solder bridge that has been dormant for a long time). Those signal lines run direct to the microprocessor, so there is only the jacks, PC traces, and the microprocessor involved. 73, Don W3FPR Jean-François Ménard wrote: It seems that something let my K2 stuck in TX mode. I removed all module and put appropriate jumpers (unmod kit). Still in TX when powered ON. I checked this using my DL2 dummy load with my multimeter I always have output power !! Could it be a defective KEY jack that is jammed? I have nothing plugged.. Le 08-09-18 à 23:33, Don Wilhelm a écrit : Jean, This is strange - the second case of similar behavior reported on the reflector today. Could it be a case of the 'phase of the moon'? When the K2 is in transmit state, the behavior will be as you describe - no buttons operate but the K2 displays the frequency. Check to see if your K2 is somehow stuck in transmit. The easiest way is to check the state of the 8R and 8T voltages. You can checkby measuring the DC voltage at the anodes of D6 and D7. During receive, the voltage at D6 anode should be about 8 volts and the voltage at D7 should be near zero volts. If the K2 is 'stuck in transmit', those voltages will be reversed. If your K2 is indeed 'stuck in transmit', try removing the key plug and the microphone - if something external is creating that transmit condition, it should be OK with those cables unplugged. 73, Don W3FPR Jean-François Ménard wrote: Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! De Jean-François Ménard / VA2SS No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM De Jean-François Ménard / VA2SS ___ 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 De Jean-François Ménard / VA2SS ___ 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 PSK31 with Digipan
Hi All, I have noticed this problem as well, and also with the sdr 1000. I just widen the tx passband on the sdr 1000, so perhaps we could use the 6 kHz filter for A mode data transmission. 73 Tim gm4lmh - Original Message - From: "zibs" <[EMAIL PROTECTED]> To: Sent: Friday, September 19, 2008 2:12 PM Subject: [Elecraft] K3 PSK31 with Digipan Just getting my new K3 working on PSK31 and noticed that it seems to be important to limit the range of the transmit frequency. Using Digipan and K3 Data A mode, if I select a transmit frequency on the waterfall that is too high or low, I will get very low (or zero) power output. It seems like one needs to keep this frequency centered in the transmit filter bandpass (I use the 2.7 kHz filter for transmit) -- so should I always transmit near 1.3 kHz? I never noticed needing to limit this range when using my IC-756 with Digipan. Steve N9SZ -- View this message in context: http://n2.nabble.com/K3-PSK31-with-Digipan-tp1100818p1100818.html Sent from the Elecraft mailing list archive at Nabble.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 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 not transmitting after AM BC use
After my post yesterday about not being able to transmit after being on the AM BC band.think the problem may have been that Phat Phingers may have stayed on the mode up button too long putting the rig in test mode (blinking T) and being a newbie I didn't recognize the problem. Powering the rig off and on cleared what was an operator problem.this has probably NEVER happened to anyone else. 73, de gary ___ 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 freeze at startup... need advice
It seems that a resistence check on the control board give me a hint. U6 PIN 29 are inside spec, but PIN 30 give me only 16K ohm and should be higher... around 80K ohm to 90k The key jack seems to be good, R1 and R2 are OK. Re-insert controler on RF board, nothing change Le 08-09-19 à 08:11, Don Wilhelm a écrit : Jean-Francois, It certainly could be a faulty key jack, but it could be a microprocessor problem too. Turn the power down to zero for further testing. Then check the voltage at the end of R1 and R2 near the key jack - they are easy to reach if you remove the left side panel. The voltage should be near 5 volts if there is nothing pulling those inputs down. Remember that the DOT line and the PTT line are one and the same on the K2, so if that line is low the problem nay be in the key jack or on the Front Panel board. Should you find either the DOT or DASH lines near zero volts, turn power off and make resistance checks to find out if there is a short (maybe a solder bridge that has been dormant for a long time). Those signal lines run direct to the microprocessor, so there is only the jacks, PC traces, and the microprocessor involved. 73, Don W3FPR Jean-François Ménard wrote: It seems that something let my K2 stuck in TX mode. I removed all module and put appropriate jumpers (unmod kit). Still in TX when powered ON. I checked this using my DL2 dummy load with my multimeter I always have output power !! Could it be a defective KEY jack that is jammed? I have nothing plugged.. Le 08-09-18 à 23:33, Don Wilhelm a écrit : Jean, This is strange - the second case of similar behavior reported on the reflector today. Could it be a case of the 'phase of the moon'? When the K2 is in transmit state, the behavior will be as you describe - no buttons operate but the K2 displays the frequency. Check to see if your K2 is somehow stuck in transmit. The easiest way is to check the state of the 8R and 8T voltages. You can checkby measuring the DC voltage at the anodes of D6 and D7. During receive, the voltage at D6 anode should be about 8 volts and the voltage at D7 should be near zero volts. If the K2 is 'stuck in transmit', those voltages will be reversed. If your K2 is indeed 'stuck in transmit', try removing the key plug and the microphone - if something external is creating that transmit condition, it should be OK with those cables unplugged. 73, Don W3FPR Jean-François Ménard wrote: Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! De Jean-François Ménard / VA2SS No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM De Jean-François Ménard / VA2SS ___ 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 config problem
Sorry I missed related post. I understand now it is not yet implemented. 73 aki ja1nlx - Original Message - From: "a.yoshida" <[EMAIL PROTECTED]> To: Sent: Friday, September 19, 2008 8:15 PM Subject: [Elecraft] KRX3 config problem Just finished assembling my KRX3. Everything seems to work as advertized except "VFO IND " setting. When I turn VFO A to set "YES" I see "UNAVAIL" in VFO B I am reffering "Installation and Operation manual Rev B August 20, 2008". Am I missing something ??? 73 aki ja1nlx ___ 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] K3 PSK31 with Digipan
Just getting my new K3 working on PSK31 and noticed that it seems to be important to limit the range of the transmit frequency. Using Digipan and K3 Data A mode, if I select a transmit frequency on the waterfall that is too high or low, I will get very low (or zero) power output. It seems like one needs to keep this frequency centered in the transmit filter bandpass (I use the 2.7 kHz filter for transmit) -- so should I always transmit near 1.3 kHz? I never noticed needing to limit this range when using my IC-756 with Digipan. Steve N9SZ -- View this message in context: http://n2.nabble.com/K3-PSK31-with-Digipan-tp1100818p1100818.html Sent from the Elecraft mailing list archive at Nabble.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] [K3] Split Diversity Work-around
Split operation using Diversity with the KRX3 is not yet available (but will be forthcoming). A temporary work-around is to enable XIT and set the offset to the split the DX station announces. You cannot listen on your TX frequency but at least this will allow you to use Diversity and transmit on a different frequency. Another alternative is to listen to the pileup area, set the VFO to the spot you want to TX on, and then use RIT to tune back to the DX station. All of the above only works within the range of XIT/RIT (+/- 10 kHz). 73, Bill W4ZV -- View this message in context: http://n2.nabble.com/-K3--Split-Diversity-Work-around-tp1100719p1100719.html Sent from the Elecraft mailing list archive at Nabble.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] K2 freeze at startup... need advice
Jean-Francois, It certainly could be a faulty key jack, but it could be a microprocessor problem too. Turn the power down to zero for further testing. Then check the voltage at the end of R1 and R2 near the key jack - they are easy to reach if you remove the left side panel. The voltage should be near 5 volts if there is nothing pulling those inputs down. Remember that the DOT line and the PTT line are one and the same on the K2, so if that line is low the problem nay be in the key jack or on the Front Panel board. Should you find either the DOT or DASH lines near zero volts, turn power off and make resistance checks to find out if there is a short (maybe a solder bridge that has been dormant for a long time). Those signal lines run direct to the microprocessor, so there is only the jacks, PC traces, and the microprocessor involved. 73, Don W3FPR Jean-François Ménard wrote: It seems that something let my K2 stuck in TX mode. I removed all module and put appropriate jumpers (unmod kit). Still in TX when powered ON. I checked this using my DL2 dummy load with my multimeter I always have output power !! Could it be a defective KEY jack that is jammed? I have nothing plugged.. Le 08-09-18 à 23:33, Don Wilhelm a écrit : Jean, This is strange - the second case of similar behavior reported on the reflector today. Could it be a case of the 'phase of the moon'? When the K2 is in transmit state, the behavior will be as you describe - no buttons operate but the K2 displays the frequency. Check to see if your K2 is somehow stuck in transmit. The easiest way is to check the state of the 8R and 8T voltages. You can checkby measuring the DC voltage at the anodes of D6 and D7. During receive, the voltage at D6 anode should be about 8 volts and the voltage at D7 should be near zero volts. If the K2 is 'stuck in transmit', those voltages will be reversed. If your K2 is indeed 'stuck in transmit', try removing the key plug and the microphone - if something external is creating that transmit condition, it should be OK with those cables unplugged. 73, Don W3FPR Jean-François Ménard wrote: Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! De Jean-François Ménard / VA2SS No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.169 / Virus Database: 270.7.0/1680 - Release Date: 9/19/2008 8:25 AM ___ 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 config problem
Yes, this fairly major feature of the K3 is missing. No timescale for it's implementation been given. 73 Stewart G3RXQ On Fri, 19 Sep 2008 20:15:13 +0900, a.yoshida wrote: > Just finished assembling my KRX3. > Everything seems to work as advertized except "VFO IND " setting. > > When I turn VFO A to set "YES" I see "UNAVAIL" in VFO B > I am reffering "Installation and Operation manual Rev B August 20, 2008". > > Am I missing something ??? > > 73 > aki ja1nlx > > ___ > 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] KRX3 config problem
Just finished assembling my KRX3. Everything seems to work as advertized except "VFO IND " setting. When I turn VFO A to set "YES" I see "UNAVAIL" in VFO B I am reffering "Installation and Operation manual Rev B August 20, 2008". Am I missing something ??? 73 aki ja1nlx ___ 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: RSGB Insurance - check yours
Again, please forgive my cross posting. I have received the following mail from Peter Kirby, General Manager of the RSGB, correcting my misunderstanding of the situation with Catlins/Orion. Although Orion did cease trading 6 months ago, this WAS apparently announced in RadCom and other media. I was not aware of the announcement and so apologise to the RSGB and RadCom for my complaint that we had not been notified. -- It is unwise to be too sure of one's own wisdom. It is healthy to be reminded that the strongest might weaken and the wisest might err. -Mohandas K. Gandhi (1869-1948) = = = = = = = = = = = = Dear Mr Ferrington, I have recently sighted an Email you placed on various reflectors warning/announcing that the RSGB Insurance scheme through the Lloyds syndicate Catlins had gone out of business. This I am afraid that not only is the information you put out incorrect but this is very old news. The insurance brokers Orion who were handling this business ceased trading some 6 months ago this was widely reported by the RSGB at the time in RadCom on GB2RS and on the RSGB website. At the same time we reassured those members/Radio Amateurs that Catlins the underwriters providing the insurance cover would honour all policies until the time for policy renewal. The RSGB could not write to each individual policy holder because we do not know who has joined the scheme this is between the broker and the individual amateur so the only method of announcing the news was via the mediums listed above. The Society has worked with Catlins since the announcement to try to identify another broker to take on the business, to date we have been unsuccessful. The RSGB’s role is to put its name to the scheme only. We do not recommend or have any other involvement. I am more than happy for you to place this Email on the reflectors you posted your Email on to correct the mis-information you put out in your original Email. Yours sincerely Peter Kirby, G0TWW Peter Kirby. General Manager. Registered office: Radio Society of Great Britain 3 Abbey Court Fraser Road Priory Business Park Bedford MK44 3WH Tel +44 (0) 1234 832700 Fax +44 (0) 1234 831496 Registered Number: 216431 On 18 Sep 2008, at 12:43, David Ferrington, M0XDF wrote: Please forgive the cross posting, especially if you aren’t a G or an M. I have just found out that the company that provided the RSGB Radio Insurance Plan Catlin Insurance Company (UK) Ltd. (as advertised in RadCom last year I believe) went out of business sometime ago - I don't know when. I discovered this by chance and have seen no notification of this in RadCom - something I would have expected since it was RadCom that recommend it. My policy is due soon and since I've increased my kit (added a K3 to start with :-), I'm going to go back to the previous provider - "Amateur Radio Insurance services" supplied by Stuart Alexander Ltd. (0207 3351647). I have no association with them other than being a previously happy customer. I only went to the RSGB plan because it was recommended by the RSGB and was slightly cheaper (very slightly), lesson learnt! Again, apologies for the bandwidth. -- If you must play, decide on three things at the start: the rules of the game, the stakes, and the quitting time. -Chinese Proverb ___ 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 freeze at startup... need advice
Try removing and reseating the MCU (U6) on the Control Board before switching on, this will clean the contacts and could solve your problem. I have had the same problem with my K2. 73, Geoff GM4ESD Jean-François Ménard wrote on Friday, September 19, 2008 2:55 AM Hi everybody, I have my first major trouble since my building experience back in 2004. Now, everytime i power up my K2, I can see ELECRAFT and then the frequency. but everything is frozen after.. still get the frequency displayed, but no button, no function work. I also tried to reset the K2 to the factory default by holding 4-5-6 buttons. Got the 201 message then back to the ELECRAFT and the frequency. but still frozen Is it possible the the control board PIC got a static discharge or something like this !?!?!?! Thanks for your help. De Jean-François Ménard / VA2SS ___ 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
