[Elecraft] P3 Beta software Bug? Data A REV?
I observe the full 2.8 kHz red transmit cursor underneath the green receive cursor when DATA A used. However, when I press and hold ALT on the K3 to select DATA A REV I see only the green receive filter cursor, without the red transmit cursor. Was DATA A REV overlooked in the makeover? Bob NW8L On 04/26/2014 06:42 AM, Joe Subich, W4TV wrote: > > I agree here ... FSK D, AFSK A, and PSK D should show 400, 400 and 100 > Hz, while only DATA A should show the full 2.7 or 2.8 KHz. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Random wires
Here's a link to the W8JI radiation resistance topic: http://www.w8ji.com/radiation_resistance.htm where the antenna efficiency issue is analyzed - using a 1/4 long folded radiator as the example. In this analysis the antenna efficiency is unchanged because total power and ground loss power terms remain constant. Bob NW8L On Tue, 1 Oct 2013 14:48:55 -0700 "Ron D'Eau Claire" wrote: > The important value is the resistance at the feed point of the > radiator, independent of any matching devices used. > > Adding a 4:1 or other transformer is simply adjusting the impedance > the feed line sees, like any other matching network you might use. It > has no effect on the feed point resistance of the antenna. > > A 1/4 wave long folded radiator has a feed point resistance of 4x the > typical 1/4 wavelength radiator, quite independent of the ground > system. Hence the efficiency is higher. > > 73, Ron AC7AC > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 USB request
Actually, in many cases a USB port is used in conjunction with a USB<->Serial converter chip, like the FTDI series, precisely to allow a product to be accessed over USB without changing the serial protocol originally used over the RS232 interface. The USB interface is exposed to software on the PC via a virtual COM port, by means of the driver supplied by the USB<->Serial port converter chip vendor. Existing programs continue to work just fine. I've done this for years at work, adding a USB port to our products using an FTDI converter chip which is demanded by those customers using laptops without an RS232 interface (and who do not want to mess around with outboard USB<->Serial converter cables). In many cases the product retains the original RS232 interface with DB9 connector as well, so the device can be accessed one way or the other. The serial control protocol is unchanged. Even firmware updates are done over the USB interface, just as they were done over the RS232 interface. It's no big deal to do this if all you need to do is sustain an existing serial control protocol and PC software, rather than implement digital audio transport over the USB interface. Bob NW8L On Sat, 10 Nov 2012 01:31:11 -0800 "Fred Townsend" wrote: > MORE IMPORTANTLY, if you replace RS232 with either an interface or > USB, you break the code of every ham radio program out there that > uses an RS232 interface. That is not a trivial matter. It's still a > shovel with a rope handle. > 73 > Fred, AE6QL > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KAT500 cable?
I downloaded the KAT500 manual from the website a few minutes ago, Revision A. I think it's been changed since you downloaded it, I see only a portion of the text you quote below. However, bullet (4) on page 7 still starts with the line "DB15 interface cables with male and female connectors (one cable supplied)." Maybe was meant to be edited also since according to this posting: http://www.mail-archive.com/elecraft@mailman.qth.net/msg144134.html the cable isn't going to be included. I called and added a E850463 cable to my KAT500-K order just today and was told "lots of guys are adding the cable to their orders" without any mention that it's already included. 73, Bob NW8L On Fri, 2 Nov 2012 21:44:57 -0400 (EDT) ac...@aol.com wrote: > Excerpt from the KAT500 manual posted on the Elecraft website: > > DB15 interface cables with male and female connectors (one cable > supplied). Do not use > common VGA cables; they are not wired correctly for this use (See > Interface Cable Wiring on page > 10). One cable is supplied with the KAT500. If you need a second > cable, you can order E850463 from > Elecraft or you can make your own. These cables provide the best > integration of the KAT500 with the > K3 and KPA500 by: > Including the essential Key line that inhibits the KPA500 > amplifier. The Key line circuit > passes through the KAT500 where it is automatically opened whenever > a KAT500 tune > operation occurs. This inhibits the KPA500 to avoid applying > excessive RF power while the > KAT500 is tuning. If you need access to the key line to control > external equipment, see > Elecraft K3 Transceiver and KPA500 Amplifier with Separate Key Line > on page 7. > Providing band data from the K3 to the KAT500 that allows it to > switch to the current band at > the same time as the K3 instead of waiting until RF is applied and > allows the KPA500 > amplifier to send the K3 status information (see the KPA500 Owner’s > Manual for complete > details). __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 s/n 1965 on the air - and a power-up question
Is the negative lead from your power supply to the KX3 open, maybe at the DC input connector? If so, return current could be flowing through the coax shield, antenna system ground etc. to find its way back to the Ten-Tec supply through its chassis to V- connection. Disconnecting the coax would interrupt power to the rig in such a case. Might be worth checking. Bob NW8L >I'm very excited to get my new KX3 on the air, and during my initial >exploration of the rig, I discovered something unexpected. It appears >that the rig will not power on if there is no antenna attached. I >noticed this first when I disconnected the coax to change the antenna >setup while the rig was on and in receive mode - the rig immediately >shut down. Then with the antenna disconnected I tried to power up - no >response. After reconnecting the antenna, everything behaved normally. > >I did not find any mention of this in the manual. I don't have an ATU >installed, perhaps that might have an effect. > >I am running from an external 20A power supply (a venerable TenTec >252M), and the load is RG 8X connected to an LDG Z-11 autotuner, >feeding an outdoor dipole. > >If this is normal behavior, does it have implications for doing >firmware updates? Must the rig have some kind of load attached in >order to power on to connect to the computer? > >In all other respects everything is working fine and I am very pleased >with the rig. My first CW contact was Bulgaria on 10w from the east >coast! > >73 >Mike N2HTT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Is a K3 ATU with balanced outputs possible?
Maybe not. The analysis presented in this article: http://fermi.la.asu.edu/w9cf/articles/balun/ leads to the conclusion that locating the choke balun at the input of the tuner, and floating the tuner, offers an advantage only for balanced tuner designs (and good balance in the load). The stress on the balun in a high SWR situation is unchanged by moving it to the input. In short "An unbalanced tuner trades the large differential mode impedance for a large unbalanced impedance making the balun's job unchanged." W8JI also addresses the issue in this article: http://www.w8ji.com/tuner_baluns.htm and comes to the same conclusion, with emphasis on the need for good load balance in the case of a balanced tuner with choke balun at the input. He ends with: "The irony is, moving the balun to the input mostly works only when the balun is not needed!". Food for thought. I use a floating balanced-L tuner with choke balun at the input, but try to keep decent balance in the antenna system for this reason. Bob NW8L >There may be no difference in efficiency between putting the balun at the input >or the output of the tuner if you are operating into a nice 50ohm resistive >dummy load, but the situation changes if you are operating into an antenna fed >with ladder line on which there is a high SWR. In this case, the high SWR can >cause high currents that saturate the ferrite core in the balun, and causing >non-linearity and producing heat losses. This is why it may be preferable to >locate the balun at the input of the tuner, where the SWR on the transmission >line is low, and "float" the whole tuner. However, as Don mentioned, this can >present difficulties if the tuner is not a balanced design. > >73, Matt VK2ACL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 Problem
I experience a similar thing. With KPA500 BAND CHG set to STBY and using the KPA500 band buttons to change bands, it happens if the KPA500 goes from OPER to STBY on band change. Elecraft support confirmed the issue and said that it would be fixed in the next K3 firmware release. Bob NW8L >Fred, >There is a known firmware issue which causes the K3 to sometimes "forget" >to go back to 100W when switching the KPA500 from OPER to STBY. >Mine has the same issue where I need to periodically reset the K3 PWR back >up to 100W when operating the KPA500 in STBY. So far the K3 remembers to >go to the preset PWR output levels when the KPA500 is in OPER. >Elecraft is supposed to address this issue in a future firmware release. > >Mike AC6JA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna static charge precautions - any tips?
Check the K3 schematics - there *is* a static bleed resistor at each antenna input, including the KXV3 Rx Ant In jack. Gas discharge tubes are also present in the KANT3, KAT3 and KRX3. Bob NW8L >Which begs the question...why isn't a 100K across the antenna jack in the >original design? >BTW, I use a choke across the antenna leads. > >Chuck, KE9UW >aka Jack, BMW Motorcycles BMWMOA #224 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] (no subject)
Check the K3 schematics - there *is* a static bleed resistor at each antenna input, including the KXV3 Rx Ant In jack. Gas discharge tubes are also present in the KANT3, KAT3 and KRX3. Bob NW8L >Which begs the question...why isn't a 100K across the antenna jack in the >original design? >BTW, I use a choke across the antenna leads. > >Chuck, KE9UW >aka Jack, BMW Motorcycles BMWMOA #224 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FW: TEN-TEC announces new amplifier
Specs, manual etc. are all available on the Ten-Tec website: http://www.tentec.com/products/160%252d6-Meter-Solid-State-Linear-Amplifier.html I'm not sure about QSK operation. From the product brochure: "Amplifier keyed form direct connection to foot switch,hand switch, or straight key. Key Out from amplifier is provided to key radio." >From the manual: "The rear panel on the 418 has a 1/8” stereo jack for connection of a key input and key output. The tip is used as the key input to key the 418 and the ring is used as a key out for other configurations. The key out has a 4 millisecond delay to allow the amplifier’s relays to engage to prevent hot switching. The key out is not a relay. It is a transistor switch rated for a maximum of 24 volts and 250 mA. Note: You can not use paddles to key this amplifier." Bob NW8L >Any specs shown on this? > >matt W6NIA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Digital Mode Interface for the KX3 for WSJT modes
Yes, I *know* that the KXSER serial cable carries only wires for TXD and RXD. That's why I said that the KXSER cable would run between the KX3 and the interface box. As the original message stated, a *full* serial port would run from the computer to the interface box, where PTT and CW would be broken out for connection to the KX3 independently of the serial line to the KX3 (which could be a KXSER). 73, Bob NW8L What is missing is that the KXSER serial cable carries only wires for TXD and RXD. Furthermore, the backshell is molded, so you cannot open it and add the wires. To use PTT from RTS or DTE, you would have to use a regular serial cable to your interface box, and then provide an outlet from that box to plug the KXSER cable into, and route the TXD and RXD signals on to the KX3. If one chooses to use the KXUSB cable, you would need 2 ports to use PTT from RTS or DTR.- one having the RTS or DTR signals and the other being a port associated with the USB to serial chip. 73, Don W3FPR On 7/13/2012 11:52 AM, Bob Cunnings wrote: > I don't understand this response. Why would he need to use 2 serial > ports or Y adapters? He states that a full serial port will run from > computer to interface box, where the serial signals will be broken out > as required for PTT and CW. Presumably the KXSER rs-232 cable could > run between interface box and the KX3 to convey RXD and TXD. What am I > missing? > > Bob NW8L > > Bill, > > You may want to re-think using the serial port on your interface. > > Most data mode applications like to use the same COM port for rig > control (OK, maybe just frequency display) as they use to activate DTR > or RTS for PTT. > > Given that the KX3 supplied cables only have RXD and TXD signals, using > the serial port to generate PTT requires that either you use 2 serial > ports (one may be the KX3 USB cable and the other can be a real port or > USB to Serial adapter), or provide a "Y" adapter to go to your > interface. Use of the "Y" adapter precludes the use of the KX3 USB cable. > > There is nothing wrong with generating PTT from the audio stream, or > just using VOX in the KX3. > > 73, > Don W3FPR > On 7/13/2012 9:51 AM, Bill Conkling wrote: >> I am working on an interface in a box w/pcb. Once you use a box, you can do >> anything. I plan to have full serial port and two audio cables from >> computer. Transformers in the audio chain and a 10K/1k attenuator in mic >> input to KX3. I will split the serial port to provide proper connections >> for CAT, PTT, and CW as n1mm handles the K3. >> >> Whole thing in a 2.5X2.5X1 box. >> >> Big plans >> >> ...bill nr4c __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Digital Mode Interface for the KX3 for WSJT modes
I don't understand this response. Why would he need to use 2 serial ports or Y adapters? He states that a full serial port will run from computer to interface box, where the serial signals will be broken out as required for PTT and CW. Presumably the KXSER rs-232 cable could run between interface box and the KX3 to convey RXD and TXD. What am I missing? Bob NW8L Bill, You may want to re-think using the serial port on your interface. Most data mode applications like to use the same COM port for rig control (OK, maybe just frequency display) as they use to activate DTR or RTS for PTT. Given that the KX3 supplied cables only have RXD and TXD signals, using the serial port to generate PTT requires that either you use 2 serial ports (one may be the KX3 USB cable and the other can be a real port or USB to Serial adapter), or provide a "Y" adapter to go to your interface. Use of the "Y" adapter precludes the use of the KX3 USB cable. There is nothing wrong with generating PTT from the audio stream, or just using VOX in the KX3. 73, Don W3FPR On 7/13/2012 9:51 AM, Bill Conkling wrote: > I am working on an interface in a box w/pcb. Once you use a box, you can do > anything. I plan to have full serial port and two audio cables from > computer. Transformers in the audio chain and a 10K/1k attenuator in mic > input to KX3. I will split the serial port to provide proper connections > for CAT, PTT, and CW as n1mm handles the K3. > > Whole thing in a 2.5X2.5X1 box. > > Big plans > > ...bill nr4c > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 sometimes forgets set power level?
I see a similar problem here when using the band change buttons on the KPA500 -- with KPA500 BAND CHG set to STBY and K3 PWR SET set to PER BAND. The K3 STBY power level for a band "A" appears to be overwritten with the OPER power level when the KPA500 is in OPER mode and I shift to another band "B", causing the KPA500 to change from OPER to STBY. On return to band "A" the KPA500 is in STBY but the K3 power level is wrong and must be changed back to the original value (100 W). There is no problem when KPA500 BAND CHG set to NOR. When I reported it to Elecraft support they acknowledged the issue and said it would be sorted out in a future firmware release. I have KPA500 BAND CHG set to STBY because I use a manually adjusted balanced antenna tuner and don't want the amp to be in OPER status until I've re-tuned after a band change. Bob NW8L >I have my K3 set up with my KPA500 and to run 15 watts in OPER and 100 >watts in STBY. >It seems every so often when I switch between OPER and STBY, both power >levels will be at 15 watts and I have to roll the power back up to 100 watts >in STBY mode. >Any ideas as to why the K3 would forget the power level? >I am running the most current firmware versions in both. >Any info would be appreciated. > >Mike AC6JA >K3 #3215 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] help - firmware hangup
Duh! Parameter Initialization - I see it now (should have searched the electronic version of the manual). Thanks, I'm going to make a note of this. It's good to know that it may help in recovering from a condition where the normal procedure to force a download doesn't work. Bob NW8L On Sat, Jun 30, 2012 at 11:59 AM, iain macdonnell - N6ML wrote: > Bob, > > See the section of the K3 Owner's Manual entitled Troubleshooting / > Parameter Initialization > > 73, > > ~iain / N6ML > > > > On Sat, Jun 30, 2012 at 10:32 AM, Bob Cunnings wrote: >> I find nothing in the K3 manual or K3 Utility regarding "PWR on/SHIFT >> LO". Is this a useful undocumented procedure or just voodoo? Perhaps >> the KE7X manual provides a rationale for this action but I don't have >> a copy of it, to date the Elecraft manual has been entirely >> sufficient. >> >> Bob NW8L >> >> --- >> I have regained comm with the K3 and load 4.51 successfully. >> >> Going through everything, again, I tried the PWR on/SHIFT LO on p 32 of >> the KE7X manual. This time it worked. That enabled comm between computer >> and radio, etc. So, I think this is working. Thanks again to everyone >> for responding. Aside from specific suggestions - all appreciated - just >> having the Elecraft community out there was reassuring which enabled me >> to keep plugging along. That's as good as any specific suggestion. >> Thanks much to all. >> >> ...robert >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] help - firmware hangup
I find nothing in the K3 manual or K3 Utility regarding "PWR on/SHIFT LO". Is this a useful undocumented procedure or just voodoo? Perhaps the KE7X manual provides a rationale for this action but I don't have a copy of it, to date the Elecraft manual has been entirely sufficient. Bob NW8L --- I have regained comm with the K3 and load 4.51 successfully. Going through everything, again, I tried the PWR on/SHIFT LO on p 32 of the KE7X manual. This time it worked. That enabled comm between computer and radio, etc. So, I think this is working. Thanks again to everyone for responding. Aside from specific suggestions - all appreciated - just having the Elecraft community out there was reassuring which enabled me to keep plugging along. That's as good as any specific suggestion. Thanks much to all. ...robert __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] help - firmware hangup
In K3 Utility Help, USB to Serial Adapter Troubleshooting topic: "Before loading K3 firmware through a virtual port associated with a microHAM microKEYER, microKEYER II, MK2R or MK2R+, change the microHAM USB Device Router's Radio type to "none". (TU W4TV). If you are unable to load firmware through a microHAM device, use a USB to Serial Adapter or a "real" RS-232 cable. Neither microHAM nor Elecraft recommend loading K3 firmware through the microHAM Router (the PC software used with microHAM USB devices)." Maybe this is the problem. Bob NW8L -- Dick... Thanks for responding. Still no joy after going through all the HELP suggestions. The problem seems to be an inability to connect from the computer to the K3. Note, this whole arrangement has been working perfectly up to this point. No cable changes, etc. What I get when trying to establish a connection to the K3 is a steady hunt through various baud rates with no success. I have cycled everything many times. I am not using a serial-USB adapter. I am connecting via a microHAM CW KEYER [which has been working without problems]. I think I'm getting desperate! Thanks again. ...robert On 6/30/2012 16:00, Dick Dievendorff wrote: > See K3 Utility Help, Troubleshooting MCU Load failure. It has a step by step > recovery procedure. > > 73 de Dick, K6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 Cheat sheets
Well, there is this: http://www.elecraft.com/manual/KX3reference2.pdf on the Elecraft website. Bob NW8L >Has anyone updated / created a cheat sheet for the KX3 yet ?? > >If so, could you forward a copy to me please… > >Thanks >Niel >WA7SSA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 - Noise Reduction
Especially silly since if you actually read the erratum: http://www.elecraft.com/manual/E740163E%20KX3%20Owner'sManErrata%20B2-2.pdf it's defined explicitly: "Some specifications are still shown as TBD (to be determined)." Bob NW8L >A silly thing to debate -- but, it has always meant "To Be Done". __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 SVGA Keyboard
Will the P3 get data display without the need to install the P3SVGA? This would be nice for those who don't need the external monitor or want to use a keyboard, but are happy to use paddles in PSK-D mode... that VFO B area is pretty cramped. Bob NW8L ... The P3 will also get data display, with or without an attached keyboard. 73, Paul __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Tx audio ramp up with DATA-A mode
If you are using Windows, there *is* a way to adjust the emu0202 output in software. It's not by using the EM-U control panel app but by using the Windows Volume Control applet instead. I'm using an emu0202 with Windows XP. Either access the Windows Volume Control from the task bar or Navigate to Control Panel->Sounds and Audio Devices. Select the Audio tab (not the Volume tab where the controls are grayed out) and you should see the emu0202 as the "sound playback" device. Click on the Volume... button to open the Speaker dialog, where you can adjust the output level. With mine set to the 2nd tick mark from the bottom, the mic level control is set to 16 or 17 to drive the K3 to 4-5 bars input in DATA A mode. If you are running Windows 7 things may be a bit different. No, the emu0202 instructions don't mention how to do this. Bob NW8L >Just providing some information that may help others that have >experienced RF slow ramp up to full power when driving Tx audio from >a soundcard (typ DATA-A application). I > >I had comments back at the time I asked for solutions to check for >low audio level. But it was the opposite, in fact! > >I am using an external emu0202 soundcard (I/F to computer vis USB2.0) >which has plenty of level controls for a sound input but none for >output via the stereo phone jacks. Going into the operating sw for >the soundcard reveals no adjustment of the output audio (usually >called playback). I found reference to making adjustments as part of >installation of the sw - but none after installation - huh? > >Well not wanting to go thru all the process of un-installing then >re-installinng I looked for an alternative. There was one starring >me in the face on the front panel. There is a headphone jack with >level control (volume) as part of the on-off control. I unplugged my >Tx audio line from the jack at the rear and into the headphone jack >and adjusted the TX audio to 4-bar with 5th flickering. > >I could not accomplish this using the mic level control on the K3 >(which doubles as line-in level). Setting the mic=0 results in no >audio; setting the mic=1 and it was overloading the K3. The >soundcard output was just too hot. Using the headphone jack with >headphone level control lets me set it just right. > >Result. First time I sent test tones form the sw the K3 went thru >the gradual RF ramp up. Next time I tried it K3 immediately went to >full power with no ramp up...problem solved! > > >73, Ed - KL7UW, WD2XSH/45 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KAT500 vs KAT3 Matching Range
According to the K3 manual (page 73): "The KAT3 provides a wide-range, switchable C-in/C-out L-network for matching a variety of antennas with SWR as high as 10:1 (100 W) or 20:1 (10 W)." so the KAT500: "Typical matching range at 500-600W is up to 10:1 on most bands." is comparable to the KAT3 I suppose. Bob NW8L >Will the matching range of the KAT500 be the same as the KAT3? If not, is it >better or worse? > >Andy VK4KY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] serial to USB
>what IS the difference between FTDI and Prolific. They are two different manufacturers of USB to Serial hardware ICs (chips). http://www.ftdichip.com/ http://www.prolific.com.tw/eng/company.asp Besides the hardware, each manufacturer supplies royalty free software (device drivers) as part of the solution for PC operating systems such as Mac, Windows and Linux. At work I have long used FTDI chips in products we design. A customized version of the signed driver package supplied by FTDI for 32 and 64 bit Windows is incorporated into our own software distribution. Prolific is generally ok but lately they have been warning about counterfeit parts and USB to Serial Cables: http://www.prolific.com.tw/eng/downloads.asp?id=31 Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] Remote control protocol documentation
>From the changes notes for K3 firmware MCU 4.47 / DSP 2.73, 12-2-2011: REMOTE-RIG SUPPORT: "One K3 can now directly control another, with one acting as nothing but a front panel. This "remote rig" mode provides a nearly perfect emulation of the remote K3's display and controls. (Previously, front panel emulation was limited by the K3's legacy command set.) The simplest way to use this is to connect the two K3s together using a "null modem" cable at the RS232 ports. However, by using a computer or a third-party hardware as an intermediary, it's possible to control a K3 over the internet or even a wiFi connection." "Previously, front panel emulation was limited by the K3's legacy command set." hints at something new to make remote control more efficient. Wayne described it in this message posted on 21 Sep 2011: http://www.mail-archive.com/elecraft@mailman.qth.net/msg123387.html "Virtually the entire K3 user interface is supported by the new remote- control protocol. It really feels like you're using the remote K3 itself, including a 100% accurate emulation of the remote K3's LCD (flashing icons, etc.)." Bob NW8L >So the new "REMOTE" mode of the K3 uses the normal K3 commands from the >Programmer's Reference to talk to the remote K3? I was sure I'd seen >somewhere that a better protocol had been devised for this. > >Can anyone with such a setup verify if that's the case, possibly by >snooping on the link? > >This is not directly related to RemoteRig, as far as I understand it will >work by hooking up any 2 K3's with, for example, a null-modem cable or two >serial ports on a PC "virtually" connected together. > >73, Thomas __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 - Range of integration with P3 (initial version)?
Very nice -- will the adapter/P3 interface be the "aux. data" port rather than the IF port, perhaps to minimize the number of conversions in the path? I've been wondering about possible applications for "aux. data". Bob NW8L >Not so. We also plan to offer a small IQ to P3 adapter for the KX3, which will >give users full P3 operation with the KX3. > >Stay tuned! > >73, >Eric __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3SVGA - Coming soon
Well, if these connectors match up to the unused cutouts in the existing P3 rear panel, these may be the jacks marked "keyboard", "ext. display" and "aux. data" with "sensor" remaining empty. Or maybe not. Bob NW8L >Well, now: > >I spy a USB socket and what appears to be an Ethernet socket above and below >the VGA socket on this board... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KAT500 update
Another available tuner is the Palstar BT1500A, a balanced L tuner with choke balun at input. I've been using one for years here. Build quality is excellent and it has served me well matching doublets fed by 450 ohm window line running into the shack. Right now it's being used with the KPA500. Bob NW8L >Don't forget that MFJ now makes a balanced tuner. Three versions - >974B, 974HB, 976. They do have what is needed - a balun at the input >followed by a fully balanced tuner. Or at least they appear to be >fully balanced. > > >73 de dave >ab9ca/4 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 question
The answer is found in the Rev B P3 manual on pages 18 and 19, it varies by tuning mode. In "tracking" mode the right and left labels display frequencies "in terms of their offset from the center", and in "fixed-tune" mode they are "actual RF frequencies that correspond to the left and right edges of the display, rather than the frequency offsets from the center." Bob NW8L >The screen on my P3 has a center freq. of for example 28.050 and range >readings in the left corner is -50. and right corner is +5 > > >How do I get the minus and plus readings to read actual frequencies? Like >28.000 and 28.100? > > >Bob, W1EQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [ot] rf from smart meters
Here's some info from the ARRL regarding smart meters: http://www.arrl.org/smart-meters Bob NW8L >Hi Gang, my utility is about to roll out smart meters and it occured to me will >it generate rf on hf? It will be 6' from shack. Anyone pulling their hair out >over smart meters? I hope not. > >73 >Mike R __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] RX audio distorted on FM
Actually, no, not for FM. Just as you say, most FM receiver IF circuits run the circuit gain at maximum. Also, a conventional FM receiver IF contains one or more limiter stages. Quieting is not a function of reduced IF gain - it is a function of the limiter. Quieting is observed as signal strength rises past the point where limiting begins, and full quieting occurs at the point at which the signal is strong enough to saturate the limiter so that no AM component remains. Bob NW8L >When the incoming station is "full quieting"... it's signal is so >strong that the IF gain is pushed down so much that the detected >audio is "quiet".. i.e. no additional band noise.. just the clean >audio to your speaker. Same deal with FM broadcast receivers. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 - WWV spectrum display
>Those tones are not sine waves. I wasn't so sure about this. Over the years I've never heard this mentioned, and technical references like NIST 25-67 and 668 describe the audio tones as being derived from the cesium standards, with no mention of harmonic content. So I sent an email to WWV asking if the audio tones were generated as pure sine waves or had harmonic content added intentionally. I quickly received this response: -- Thanks for your email. The audio tones on the WWV broadcast are derived from the station frequency standard, and are pure sine waves. Detailed information on the WWV broadcast can be found in NIST publication SP432, available for download on the webpage: http://tf.nist.gov/general/pdf/1383.pdf Sincerely, Glenn Nelson National Institute of Standards and Technology Radio Stations WWV/WWVB - I also see the harmonics on the P3. Unless Mr. Nelson is misinformed, I suspect that it may be the "harmonics" are distortion products, either transmitter IMD or artifacts of the receiver (P3 in this case). BTW the publication he mentions is a very good read for WWV listeners. Bob NW8L >Those tones are not sine waves. They have distinct harmonic content >that makes them a little "sharp" sounding, rather than the soft sound >of a pure sine wave. What you're looking at is the components that >make it sound that way. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: ARRL CW Sweepstakes question
Ok, thanks - I never knew such a thing existed. It seemed just as intense as the real thing! I'll have to try it myself some year. BTW, I meant to say November, not March! Bob NW8L >This is a practice session. No worries >Mike W0MU >J6M CQ WW DX CW Contest 2011 >J6/W0MU November 21 - December 1 2011 >W0MU-1 CC Cluster w0mu.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT: ARRL CW Sweepstakes question
Forgive me for asking, but I'm not a contester and am unclear on how things work. Tuning around 40 mtrs I hear a lot of what seems to be ARRL CW Sweepstakes activity right now. According to the ARRL website the contest begins at 2100 hrs Sat. March 5 (UTC) - but at this moment it's only 0310 hrs March 5 on my clock. Is 2100 March 4 being confused with 2100 March 5? I hear so many stations that it's hard for me to believe that they are wrong, so I think that I must be misunderstanding something. 73, Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] noisy noise
I too suffer from some severe local noise, of several varieties, which comes and goes depending on time of day, day of week etc. So I picked up a DX Engineering NCC-1 here and am happy with it. It's well made and the control knobs are *big* and very smooth, a pleasure to operate. It integrates nicely with the K3, inserted between the K3 antenna OUT and antenna IN jacks. I have a horizontal trap dipole which I use as the RX antenna on the K3 when I need to fight noise. A vertical doublet antenna or inverted L is used as the transmit antenna, but I also use these as the noise sense antennas when the NCC-1 is in-line. To do this, the horizontal antenna goes to antenna port A on the NCC-1 (receive antenna input), K3 antenna OUT (from the transmit antenna) goes to antenna port B on the NCC-1 (noise antenna input) and the output of the NCC-1 goes to the K3 antenna IN. Now I have 3 choices: If I then select the RX antenna on the K3, the NCC-1 is inserted and I use the horizontal antenna for receive. If I don't select the RX antenna on the K3, the NCC-1 is bypassed, and the transmit antenna is used for receive. If I select the RX antenna on the K3, but turn the NCC-1 OFF, then I receive on the horizontal antenna, but the signal passes straight through the NCC-1 from antenna port A to the output without modification (for some local noise that's all that's needed). K3 KEY OUT goes to NCC-1 T/R CTRL to put it in bypass mode when the K3 is keyed. Cancellation of local noise seems to work well with this setup, using a full size vertical as the noise sense antenna, and the horizontal antenna as the receive antenna. The NCC-1 can provide a very deep null on the horizontal antenna for vertically polarized noise which is "heard" better on the vertical. The trick is to correctly balance the levels of the two antenna inputs on the NCC-1. The balance and phase controls are very precise and repeatable, and the phase control has great range. Having the P3 to look at helps in identifying the noise and finding what can be a rather sharp null. So far, the noise canceller has proven helpful in dealing with many (but not all) local noise problems and I'm glad I have it when I need it. Of course no two stations are identical. An alternate setup might involve a separate noise antenna (usually vertical) on NCC-1 antenna port B, with K3 antenna OUT going to NCC-1 antenna port A. In this case the K3 transmit antenna is used for receive at all times, but the NCC-1 is bypassed if the RX antenna is not selected on the K3. Another might involve dedicated noise and receive antennas, with the NCC-1 output connected to the K3 antenna IN. The NCC-1 is designed to work with the various active antennas offered by DX Engineering, one of which might make a good noise sense antenna. Bob NW8L >Guys >I am being hammered by what I believe are switching power supplys from >the local hospital >although it could be from a neighbor as it doesnt show any directivity on >my rcv loop >are there any suggestions on a good noise canceler ?? I have a anc >product which isnt always >effective and wondered if the DX eng. unit may be better,, I believe it >will rotate / control the phase 360 # >it is a lot more expensive >anybody have any expierence with any of the noise cancelers ?? >Bob K3DJC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] One minor issue with the KPA500
Any progress in this area? I'm experiencing the same problem. KPA500 s/n 468 fw v1.11 with BAND CHG set to STBY K3 s/n 495 fw v4.42 with PWR SET set to PER BAND Works correctly when using band change up/down buttons on K3 but when using band change buttons on KPA500 the power setting for OPER remains in effect after the change - the STBY power setting is not recalled. Bob NW8L This _was_ fixed in the V1.11 firmware. I will be contacting you off-list to get more details to determine why it may not be working in your setup. Jack Brindle, W6FB Elecraft Engineering On Sep 25, 2011, at 11:01 AM, Richard Squire - HB9ANM wrote: > On July 1, I wrote: > "When BAND CHG is set to STBY (which I prefer in order to avoid tuning my > dipole on the new band with 400 W instead of 20 W by mistake!), the KPA500 > does go into STBY when changing bands but the K3 keeps the lower power > setting and does not return to 100 W. This does not happen if BAND CHG is > set to NOR." > > This was supposed to be a timing problem to be resolved with the next FW > release but FW 1.11 didn't solve it. Any one else noticed this? > Not a big issue but I'd like to go for BAND CHG = STBY... > Anyway, the KPA500 is joy to use. > > 73 > > - > Richard - HB9ANM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Horrible signal on 10130
I've been hearing (and seeing on the P3) an 850 Hz shift RTTY signal on 10.130 MHz for years now, virtually every evening. I use it as a propagation indicator on 30m, when it's strong I can work into the eastern US from here (NM) easily. I've read that it is an encrypted transmission of the US Navy, possibly from the Cutler ME NCS. I see that it turns up on this list: http://ik4hdq.net/doc/10to30MHz.htm But this signal I observe has an occupied BW of no more than 4 kHz. It's certainly not spread out over a 14 kHz bandwidth you indicate. Maybe you are seeing something else? Does it look like wide shift RTTY? Bob NW8L >Is anyone else with a P3 hearing and seeing the signal now (04Z 20 Sep) on >10130? It's audible and has the strangest display on the P3 from 10113 to >10137. > > > >Jim N7US __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] How to do soft or hard reset.
On page 66 of the manual there are instructions for "Parameter Initialization". Bob NW8L >I have searched the manual and can not find how to do a hard or soft reset of >K3 # 758.can anyone help me. > >Tnx, > >NF8J, > >Paul __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] External PAN with PMSDR question on filters
Actually, there is more to it than just the 5-pole filter offset. The panadaptor offset between the carrier and the IF center can shift as filter width increases because the K3 doesn't let the lower edge of the filter fall below 200 Hz. In CW mode for example, using a pitch of 600 Hz, there is a change in the offset required when the filter width exceeds the point where the IF center can be offset by the CW pitch frequency (where (200 + width/2) > 600). I noticed this when hacking PowerSDR/IF-Stage here to make some improvements. The definition for command FI in the K3 Programmer's Reference states: FI * (I.F. Center Frequency; GET only) RSP format: Fi; where represents the last 4 digits of the K3’s present I.F. center frequency in Hz. Example: If = 5000, the I.F. center frequency is 8215000 Hz. Intended for use with panadapters, which need to keep track of the exact I.F. center frequency as filter bandwidths and shifts are changed by the operator. If you don't account for all this the position of the filter passband relative to the carrier frequency isn't displayed correctly on the panadaptor. Bob NW8L PA3CW wrote: > > Hi all, > I recently completed a small SDR receiver called PM SDR. I am using it > with HDSDR software. Currently i have it connected to the IF out on my K3 > to use it as panorama view. In the software HDSDR i have to set some > offset values in the different modes to have the PMSDR and K3 in sync. > That is going fine, however, when i switch my filters i.e. in CW from > 400Hz to the standard 3,7 kHz the synchronisation is lost and i need > completely different offset values. Why is the offset changing if i > change filters? Is there any way i can correct this in the settings of my > K3? > Thanks > Dick PA3CW > I'm sure you meant to say standard 2,7 kHz...not 3,7 kHz. The reason for the difference is that 5-pole filters (e.g. 2.7 kHz) have a large offset compared to 8-pole filters (e.g. 400 Hz). You can either install a 2.8 kHz 8-pole filter or compensate for the offset in your software. Unfortunately it is not possible to correct for this in the K3 itself. 73, Bill __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] SWR safe levels question
If you're looking for a documented level, here's the change note describing the SWR power rollback feature when it was introduced (MCU 1.87 / DSP 1.69 on 5-3-08): * POWER ROLLBACK BASED ON REFLECTED POWER: Power rollback begins at about 2.5:1 at 100 W (and of course much higher SWRs are tolerated at lower power settings). Recovers to original target power level after mismatch is corrected. When making antenna tuner adjustments I adopt the usual convention for solid state finals: keep the SWR below 2:1. In the case of the K3 that apparently puts me well below the foldback threshold at 100 W so I'm content. It's the SWR indication on the K3 that I care about since that's what's driving the K3's foldback feature. Bob NW8L >I have been searching for the "safe" swr level for the k3. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 Batttery life question...
I take my KX1 on backpacking trips, and see internal batteries in anything like a KX1 or KX3 as indispensable! Internal battery power helps to keep rig setup quick and easy. I like using internal AA lithium batteries in the KX1 because they are light weight and will power the rig for a very long time. Bob NW8L >I see internal batteries in anything like a K1, KX1, or KX3 as having nothing >but novelty value. (I removed the KBT1 from my K1 after a year of use.) In >something like the unfortunate Yaesu FT-817, it's the height of foolishness. >Any real period of operation will require at least an external 4 AH SLA >battery. >I'd be *very* happy if no internal KX3 space was wasted accomodating internal >batteries. Put other options in the vacated space. > >Mike / KK5F __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
No, the RF Gain control is one-half of a dual potentiometer, see the K3 Front Panel schematic, page 5 of 7 "Front Panel - Miscellaneous". Bob NW8L >The RF pot in the K3 is a encoder, not a carbon pot found in old tube radios >used as a volume control. > >Ed K7WIA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 (fine tune mode)
I suggested the same thing a while back... http://www.mail-archive.com/elecraft@mailman.qth.net/msg100958.html so it's nice to know I'm not alone! Bob NW8L >I’m new on the reflector as of today. I searched for this and didn’t see >anything that addresses my thought and I hope I’m not repeating something that >has already been covered somewhere. If so, please let me know. >To me it would be useful if the following capability were available to me: >When I move a marker with the P3 knob and then tap it to tune the K3 frequency >to my selection, I almost never hit the exact carrier frequency in SSB. I >then have to move my hand over to the K3 VFO for fine tuning. It’s not a big >deal but over and over in a contest this might become time consuming. >If, after tapping the select knob on the P3 it would be useful to me if, for a >few seconds, the knob were to become a direct K3 fine frequency tune control. >I wouldn’t have to switch back and forth between the P3 & K3 all the time. If >the knob isn’t turned for a short time, say 5-seconds, it would revert to its >normal operation of moving the marker only. >Others’ thoughts on this would be welcome. >Thanks, >Bob, W7KWS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] DSP
According to the K3 Owner's Manual, the K3 uses a 24-bit ADC. From the schematic, it appears to be the Burr-Brown PCM1804DB, a very nice part. Bob NW8L -Original Message- Interesting. Can you explain how exactly you define "DSP horsepower"? Is there evidence that K3 does not have enough "DSP horsepower"? Are you sure the current K3 DSP software used full potential of the TI DSP chip? If we talking about processing, somewhere I heard that KX3 use 24 bit sigma-delta ADC. Now that is something new with potential. If I remember correctly, the K3 uses 16 bit codec. I am a little skeptical that 24 bit SD will give measurable advantage over 16 bit ADC in ham radio application. I guess at some point it will be measured. 73, Igor, N1YX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] kpa 500
FWIW this was posted back in September: http://www.mail-archive.com/elecraft@mailman.qth.net/msg102741.html "The KPA500 requires 30 to 40 watts for full output." which puts gain at 12dB or so. Bob NW8L On Thu, Dec 16, 2010 at 5:11 PM, William H. Droeger, Jr. wrote: > Has anybody heard how much power out the k3/10 will drive the kpa500 > amp to? As mostly a qrper it might be nice to have a lil juice once > in a while. I can get 12w max out of my k3/10 and was hoping since > the kpa500 is a solid state amp, I might get 400-500 watts out of it > with 12 watts of drive. Thanks-Skip KT9T > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [P-3] Some menu items in 00.41 are not retained at power off
Amplitude (Level) Calibration is described on page 22 of the latest P3 manual: http://www.elecraft.com/manual/P3%20Owner%27s%20man%20Rev%20A7.pdf Use it to calibrate the amplitude scale on the P3. Bob NW8L On Sun, Dec 12, 2010 at 7:04 AM, wrote: > > Hello all, > > One of the menu items available in 00.41 is the ability to assign centering > Marker A or B to a Function button. After selecting it in the menu, it works > as it should. But whenever the rig is powered off and turned back on, the > feature is disabled. I have to go back in the menu and select this again. > However, if I select to use the "tap knob" feature for centering Marker A or > B, that is memorized. Other menu items are memorized. > > And while I have your attention, what does "Level Calibrate" do? > > Thanks for the input. > > 73 de Art KZ5D > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 & FTDX5000 you tube
Listen carefully, at 29 seconds in he states that they are using the same speakers... What I notice is that the panadaptor on the FTDX5000 has a very slow refresh rate! Bob NW8L On Sun, Nov 21, 2010 at 2:50 PM, Ron D'Eau Claire wrote: > Sounds exactly like the FT has a forward facing speakers (are those the > grilles on either side of the spectrum display) and the K3 is using its > internal up-facing speaker. > > When the pickup microphone is beyond what the audio folks call the "critical > distance" the echoes from around the room start to compete with the direct > audio, causing a loss of clarity and an echoing effect. > > If they wanted to compare apples with apples, the mic should have been the > same distance and same orientation from each rig, or best, used a direct > wired connection to the camera audio input. > > It's true that in almost any situation the up-facing speaker won't sound > quite as good as a forward-facing speaker. That's why so many Elecraft > owners who use the speaker much add a pair of outboard forward facing units. > Back when the K2 was new, many ingenious Hams looked to the past and built > deflectors out of metal, stiff paper or plastic that sat on top of the K2 to > deflect the sound forward. Works great. > > Ron AC7AC > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DOUGLAS ZWIEBEL > Sent: Sunday, November 21, 2010 12:53 PM > To: Elecraft Reflector > Subject: [Elecraft] K3 & FTDX5000 you tube > > If this is a duplicate listing...sorry. > > I really don't care about an "audio" comparison on just one signal on > a quiet band, but wow...look at the size difference! > > I guess guys like driving an 18 wheeler, but I'll stick with the K3 > any day of the week. YMMV > > http://www.youtube.com/watch?v=WKwJ8Cu8lA0&feature=fvw > > de Doug KR2Q > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FTDX5000 Design Flaw
The FTDX500 wouldn't be the only one, if a -130 dBc composite noise number defines failure. If you have access to QST reviews, compare: Flex 5000 FT-2000 Orion II IC-7700 K3 all of which plot tx composite noise at 100 or 200 W out to 1 Mhz. You can draw your own conclusions, but the FTDX5000 apparently isn't exceptional in that regard. The Flex is no better than -120 dBc out to 1 MHz, the FT-2000 is slightly worse than the FTDX-5000, and the Orion II is no better than -130 dBc out to 100 kHz. The Icom rigs seem to do a little better. The K3 performance indeed far surpasses the others. I could find no comment on these numbers in the reviews. Bob NW8L > Why is this not sent to the Editor and Technical Editor or QST as > well as the lead test engineer at the ARRL lab? What was their > response? > > If the radio's transmitted phase noise is that bad, Yaesu should be > forced to recall all units currently in the field. > > > 73, > > ... Joe, W4TV > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] (OT) - Power Supply for SGC-237
On SCC's Installation FAQ page I see this explanation: "Analog or switching power supplies themselves are highly susceptible to RF. A few millivolts of RF in the power supply can create an instability which could lead to a catastrophic failure. We never recommend regulated or switching power supplies because no one can predict when RF is upsetting the power supply and all installations differ in characteristics." http://www.sgcworld.com/smartinstallFAQ.html Perhaps they are talking about RF pickup on a long run of power cable between a coupler located at the antenna and the power supply in the shack?? Bob NW8L On Tue, Nov 2, 2010 at 5:13 PM, stan levandowski wrote: > If there is any lister using the SGC-237 autocoupler, could you please > tell me what power supply you are using for it? > > My coupler (backordered for two months - they are apparently very > popular) is arriving on Friday and I just found out from an SGC tech's > email that I am only supposed to use an UN-regulated power supply (but > NOT a wall wart). > > > So after buying a nice Astron RS-20M power supply for my new K2, I find > out I can't use it to power the coupler because the coupler "might > destroy the Astron electronics" according to SGC (no details as to "how" > or "why" in the email). > > Unfortunately, SGC's policy is that all technical assistance is via > email only so I can't have a phone conversation with anyone there (I > already tried!). > > Thanks! > > > Stan Levandowski WB2LQF > QRP CW: Skill, not power! > QCWA #35038 OOTC #4558 NAQCC #4740 SKCC #6488 FISTS #14992 > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Roofing Filter Usage
Yes, they do. Elecraft presents it's position on the term "Roofing Filter" here: http://www.elecraft.com/K3/Roofing_Filters.htm where the "protective" function is emphasized. Bob NW8L On Thu, Oct 28, 2010 at 5:37 PM, Wes Stewart wrote: > Unfortunately, they do. Personally I dislike the term. > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] TenTec Hamfest
What I noticed was missing is a dedicated RIT *knob*. The RIT function exists, but as a secondary function, requiring two button presses to set it up. According to the manual: RIT (22) The receiver integrated tuning can be selected as a secondary button function by pressing FNC and then the MOD button. You will notice RIT will begin to flash on the front panel and you may now adjust the receiver in 10 Hz increments up or down frequency using the MULTI knob. To zero out the RIT simply press and hold the MOD button and the display will zero out. To exit simply press the FNC button Bob NW8L On Mon, Sep 27, 2010 at 7:28 AM, Ignacy wrote: > > Their Eagle is small (like K2) with few buttons in front and few connectors > in back. No SPLT button, no rx ant. 7lb with all the options. First IF at > 9 Mhz with 2.4K standard and two empty slots, and 2nd IF with DSP. Around > $1800 with no ant tuner and $2k with a tuner. > > It seems that they are finding a niche in simplicity. > > If it performs well, there radio may be good for simple Dxpeditions where > small size and dimensions matter, and one does not want to carry a separate > tuner. > > Very nice flea market, with lots of good stuff at good prices. > > Friendly Tentec staff. A knob in my TT238 broke. They gave me two free. > > Ignacy > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/TenTec-Hamfest-tp5568730p5574940.html > Sent from the [HAM] mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] TenTec Hamfest
The 599 does have a SPLIT function. According to the Eagle manual: To operate SPLIT mode simply press and hold the A/B button for 2 seconds. The word SPLIT will appear next to the B VFO which also indicates the frequency you will be transmitting on. Remember when in SPLIT mode you will always be transmitting on VFO B. Bob NW8L On Mon, Sep 27, 2010 at 8:21 AM, Joe Subich, W4TV wrote: > > > No SPLT button, no rx ant. 7lb with all the options. > > snip > > > If it performs well, there radio may be good for simple Dxpeditions > > where small size and dimensions matter, and one does not want to > > carry a separate tuner. > > With no split and without a separate receive antenna it will be > useless for any significant DXpedition. > > 73, > > ... Joe, W4TV > > > On 9/27/2010 9:28 AM, Ignacy wrote: >> >> Their Eagle is small (like K2) with few buttons in front and few connectors >> in back. No SPLT button, no rx ant. 7lb with all the options. First IF at >> 9 Mhz with 2.4K standard and two empty slots, and 2nd IF with DSP. Around >> $1800 with no ant tuner and $2k with a tuner. >> >> It seems that they are finding a niche in simplicity. >> >> If it performs well, there radio may be good for simple Dxpeditions where >> small size and dimensions matter, and one does not want to carry a separate >> tuner. >> >> Very nice flea market, with lots of good stuff at good prices. >> >> Friendly Tentec staff. A knob in my TT238 broke. They gave me two free. >> >> Ignacy > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Ref LVL and SCALE? Means What?
The scale on the left (in dBm) does indeed reflect receive signal strength, see: http://en.wikipedia.org/wiki/S_meter where the relationship between nominal S meter readings and receive signal strength in dBm is explained. Bob NW8L On Wed, Sep 22, 2010 at 7:19 AM, KM4VX wrote: > > I am trying to understand what these terms mean, and having read the related > posts still can't figure out what they mean or what settings to use. I want > the P3 to reflect cw signals and sometimes ssb signals within a given span > (say plus and minus 75). I have no idea what the db signals to he left > reflect because they can't reflect receiving signals at that db level can > they? (-100? -50? ??) I think ELECRAFT should include a description in the > owner's manual of what the terms mean and make some suggestions of what > settings to use. The art of scientific prose is to be able to articulate the > complex so the masses may understand. Also, a default setting is always > appreciated. Many thanks. Ron > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/P3-Ref-LVL-and-SCALE-Means-What-tp5559048p5559048.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 firmware 0.36 experiences?
I'm using 0.36, and like you have no need to use the function key implementation of QSY tap/hold. However, I do run LP-Pan/PowerSDR concurrently with the P3 at times and the 0.36 serial port changes have eliminated some problems I was experiencing in that case. But beyond that, nothing else noticed or enjoyed. Here's another un-original idea: how about static band edge markers on the P3? These would be vertical red lines on the spectrum display to demarcate the ham bands. I like having these in the PowerSDR display when hopping around the band, to have a rough idea of my position relative to the bottom of the CW band. Sure, there is a numerical readout of cursor position, but panadaptor tuning is supposed to be an unabashedly visual experience, right? At present I use the VFO B marker for this purpose, parking it at the lower band edge. This is particularly useful when CENTER has been held and I'm surveying the band by changing the center frequency using the QSY knob. Bob NW8L On Mon, Sep 20, 2010 at 7:44 AM, Craig D. Smith wrote: > I'm considering installing the 0.36 P3 firmware, but am not in the habit of > using beta versions of the K3 firmware, which is required for total support > of 0.36. I do not use HRD or have any other known response/latency issues. > Also no immediate plans to use the function key implementation of QSY > tap/hold. Release notes indicate that these are the main improvements in > 0.36. > My question for folks who have tried it is: Are there any other benefits of > 0.36 that I would notice or enjoy? > Thanks and 73 Craig AC0DS > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3: QSY knob mod (front panel)
Interesting. I have P3 #74 and #498, which both have the "Elecraft P3" lettering below the display, but the "TAP=QSY" lettering is in the clear. Perhaps #520 came with a larger knob, which now covers up part of the lettering? The knobs on my units are the same size as the K3 RIT knob. Now that you mention it, the P3 knob in the marketing photo is smaller than the RIT knob in the companion K3. Bob NW8L On Sun, Sep 19, 2010 at 7:19 AM, Dan Atchison wrote: > Nice idea, but on my front panel (#520), the silk screened "TAP=QSY" is > already partially covered by the oem knob. Adding a larger knob (or cover) > may hide it completely. Regardless, I find the knob OK for my finger size, > anyhow. > > Elecraft has changed the front panel on the P3 since it's introduction and > marketing photos. On #520, the display is higher in the cabinet and the > "Elecraft P3" silk screening is below the TFT display. There was > apparently a change in the display board itself as the mounting screws would > have to be in different locations to achieve this. > > I thinking when these new front cabinet panels went into production, the silk > screen for "Select, TAP=QSY" was lowered (accidentally?) and it is now > partially covered by the knob. It's just a visual oddity and my only > complaint with this superb product. > > > Dan -- N3ND > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3: QSY knob mod
I use the P3 with a fairly wide span to spot and pounce on signals in the CW bands. The P3 is near the edge of the table and I find myself most comfortable when placing the heel of my hand on the table edge and twirling the QSY knob with the index and middle fingers to move the cursor around the band. This was hard to do with the stock knob, it seemed a bit small and I needed a little more friction also. While rummaging around in a drawer I found a couple of those dipped vinyl protective caps used made to fit SO-239 connectors was inspired. One of these fits snugly over the P3 QSY knob. It fattens the knob considerably and offers a lot more friction. I can twirl away effortlessly now, and tapping is easy too. Here's a photo link: http://www.whitemesa.com/nw8l/images/p3-knob.jpg Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] New K3 & P3 Beta Firmware Available
What is the purpose of the new P3 "Knob Tap" and "Knob Hold" menu functions? Bob NW8L On Fri, Sep 17, 2010 at 12:12 PM, Wayne Burdick wrote: > Hi all, > > K3 beta firmware rev 4.12 and P3 rev 0.36 are now available. If you > have a P3, you'll want to load both. They work together to greatly > reduce serial I/O delays with PC applications such as HRD. > > There are many other improvements as well. See release notes for both > K3 and P3 below. > > 73, > Wayne > N6KR > > * * * __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Misbehaving?
Is the noise floor on the P3 stuck at -140 dBm or so all the time, no matter what? I experienced a similar problem after 2 weeks of use, and replacement of the P3 RF board was required. Apparently, I was informed, another cause can be handling damage to transformers T100 or T101 on the P3 Front Panel board, so you might take a look at them. I sure wish the P3 schematic was available at the time, it would have made troubleshooting a little easier (it's still not published AFAICS). As usual, Elecraft support was prompt and efficient, I'd contact them if there's no change. Bob NW8L On Sat, Sep 11, 2010 at 4:34 PM, Sanger, Joseph wrote: > Just assembled P3 a few days ago. Having a problem that I can't seem to > solve. > > Background: Haven't done K3 OUT mod yet (SN 113 fairly old) ... really > am apprehensive about opening up K3 again ... but I know I'm just being > neurotic ... will face any weekend now). > > The P3 was pretty much performing as expected ... given that I haven't done > the above mode yet, and I live in manhattan with a mediocre hamstick hung > outside my window .. I could generally see strongest stations above a lot of > noise on P3. That was good. > > But over past few days, it seems that the sensitivity of the device was > diminishing .. started to have trouble seeing the few stations that I could > actually hear above the noise on my K3 ... and then today, it now appears > that the P3 is basically deaf to the K3 ... I see some low ampitude noise, > which doesn't vary in appearance with or without the coax cable to the IF OUT > of the K3 plugged in. I am listening to a fairly strong Italian CW station > now on 20 meters now, sticking his head above the omnipresent S5-6 noise ... > armchair copy, if you will, but all I see is noise at the bottom of the P3 > screen. The center frequency tracks my K3 nicely ... but no matter how I > adjust the REF, SCALE and SPAN, all I see is noise. > > Any thoughts would be welcome. Yes, I will dive in and do the IF OUT mod, > but am trying to understand the curious behavior, and to see if it sounds > familiar to anyone. > > Thanks in advance > > -- WB2SSB > > Joseph J. Sanger, M.D. > Associate Professor of Radiology > Director, Radiology Informatics __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3: a modest proposal for QSY
Wow. Better hand-eye coordination I guess. Yes, I would prefer that the marker be only 1 pixel wide also. An auto-spot-on-QSY feature would be sufficient for CW use I suppose. I'll just try harder in the interim. I did receive a postcard recently from my optometrist, reminding me that I was due for an eye exam. I think I may need to get over there right away! Bob NW8L On Wed, Aug 11, 2010 at 11:45 AM, Bill W4ZV wrote: > > On Wed, Aug 11, 2010 at 12:38 PM, Bob Cunnings [via Elecraft] < > ml-node+5413008-376189874-210...@n2.nabble.com >> wrote: > >> >> The idea is to make life easier when cruising around the band when >> using a *wide* span. Earlier today I opened it up to 70 kHz so I could >> see +/- 35 kHz whilst listening around 7.040 Mhz and try as I might, >> when I used the marker to select a CW signal I often ended up outside >> the passband of my 400 Hz filter. > > > I decided to try the same on 20m since 40m is relatively dead here. Using a > 70 kHz SPAN and 400 Hz filter, after QSY I had NO signals falling outside my > passband. I don't know what we're doing differently but I am simply > aligning MKR A (in the Spectrum display only) which is 2 pixels wide with > the signals in the Waterfall display directly below. I adjust REF LVL such > that the waterfall background is relatively dark and weak signals are 1 > pixel wide. I don't find it hard to align these but would actually prefer > if MKR was 1 pixel wide instead of 2 (and I've told Alan that). > > I guess I'm spoiled by using the mouse in point/click/fine tune mode >> with LP-Pan/PowerSDR-IF in a 96 kHz span where there is no need for >> extreme accuracy in pointing, it's fast and easy. I think similar >> functionality would enhance the P3, just a suggestion. >> > > I don't care for PowerSDR but I do use CW Skimmer's waterfall. The > advantage is that clicking on a decoder dot in Skimmer takes you to the > *exact* zero-beat frequency. The downside is that Skimmer's "Softrock on > IF" mode (which is what must be used on the K3) is limited to 24 kHz spans > (although Page Up and Down allows you to jump these spans up or down the > band quickly). IMHO the really unique advantage of Skimmer is that you can > jump from one decoder dot to the next by simply using Up or Down arrows on > the keyboard. This makes for extremely fast S&Ping up or down the band in > contests. CT1BOH first described this below: > > http://lists.contesting.com/pipermail/skimmertalk/2008-November/000191.html > > This is perfectly legal for unassisted categories since Skimmer's Blind Mode > is not displaying decoded calls. > > If the P3 can be made to do something similar this would overcome this > weakness relative to Skimmer. The P3 has many other advantages such as 200 > kHz span, better flexibility in controlling both VFO A and VFO B, etc. > > In the meantime, one workaround is to leave the K3 in CWT mode, click on the > P3 signal and then tap SPOT for auto-tuning. However this still takes two > keystrokes and requires that you at least get the signal inside your filter > passband. I believe the P3 may eventually allow automatically sending the > SPOT command to the K3 with its QSY command, but there are probably better > ways to do this. > > I know Alan is very aware of this need and we'll just have to wait to see > what he comes up with. > > 73, Bill > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/P3-a-modest-proposal-for-QSY-tp5410950p5413246.html > Sent from the [K3] mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3: a modest proposal for QSY
Good advice, I'll try enabling Peak and see if I can line the marker up better that way. Bob NW8L On Wed, Aug 11, 2010 at 11:04 AM, The Smiths wrote: > Actually, after you posted that on the reflector last night I went back to > the P3 and I put my span at 50KHz and I did a BUNCH of QSY to and from the > zero beat of a signal. I was generally able to park myself within about > 10Hz of the Center. A quick push of the SPOT button brought me right to > Zero Beat with the signal. I did this with both weak signals and with loud > ones (dark red lines). > Of course this is ONLY because I painstakingly took the time to find and > properly set my Center mark before doing the final Ref Cal Alighment. > As you have already figured out, it's VERY important to let the P3 warm up > sufficiently due to it's excessive drifting before doing the REF-Cal > alignment. After that you should be able to get yourself somewhat close. > > I think that the key to getting it so accurate, Bob, is to use your Peak > meter.. Once a signal is present on the Audio display, and you can see below > that it's a cw signal, if you line the A marker up with the displayed Peak > of the signal that's stuck there, you can pretty much nail it. If you're > trying to QSY to a signal by lining it up with only the Waterfall line as it > comes down, or even worse, by using the Audio scope WITHOUT the peak on, > you'll never get close.. That becomes a guessing game. > I'm still VERY much in favor of your idea to have a Scrub feature once you > QSY, thereby using the Select knob as a way to drag the VFO around until you > have Zero beat the signal both on the rig, and on the display. Then exit the > Scub mode returning the A/B marker. > > Because the accuracy of the display readout when doing the "CENTER" > alignment is short by 2 digits, it causes the centering of the P3 to > be within only 100Hz of the actual center. It is imperative to the CW guys > that the extra 2 digits be displayed on the Top center read out. This would > allow us to both CENTER and REF CAL our WWV carrier right on Zero Beat, and > not just within 100Hz. Right now this is the most crippling blow to the CW > guys. > > > >> Date: Wed, 11 Aug 2010 10:33:27 -0600 >> From: bob.cunni...@gmail.com >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] P3: a modest proposal for QSY >> >> Can you really do much better than +/- 100-200 Hz using a 50 kHz span? >> That requires a marker placement accuracy of +/- 2 pixels, a 4 pixel >> window, which is less than 1% of the width of the display (4/480 = >> 0.25%). If so, I must concede that you're a much better marksman than >> I am! >> >> The idea is to make life easier when cruising around the band when >> using a *wide* span. Earlier today I opened it up to 70 kHz so I could >> see +/- 35 kHz whilst listening around 7.040 Mhz and try as I might, >> when I used the marker to select a CW signal I often ended up outside >> the passband of my 400 Hz filter. At 70 kHz each pixel represents a >> 150 Hz bin (approx) so I'm off by even 2 pixels I'm outside the filter >> passband. Jumping from signal to signal within a wide panadaptor span >> would be easier with a fine tune feature, and work for SSB signals as >> well as CW. >> >> I guess I'm spoiled by using the mouse in point/click/fine tune mode >> with LP-Pan/PowerSDR-IF in a 96 kHz span where there is no need for >> extreme accuracy in pointing, it's fast and easy. I think similar >> functionality would enhance the P3, just a suggestion. >> >> "Snap Tune" is an interesting idea too. >> >> 73, >> >> Bob NW8L >> > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3: a modest proposal for QSY
Can you really do much better than +/- 100-200 Hz using a 50 kHz span? That requires a marker placement accuracy of +/- 2 pixels, a 4 pixel window, which is less than 1% of the width of the display (4/480 = 0.25%). If so, I must concede that you're a much better marksman than I am! The idea is to make life easier when cruising around the band when using a *wide* span. Earlier today I opened it up to 70 kHz so I could see +/- 35 kHz whilst listening around 7.040 Mhz and try as I might, when I used the marker to select a CW signal I often ended up outside the passband of my 400 Hz filter. At 70 kHz each pixel represents a 150 Hz bin (approx) so I'm off by even 2 pixels I'm outside the filter passband. Jumping from signal to signal within a wide panadaptor span would be easier with a fine tune feature, and work for SSB signals as well as CW. I guess I'm spoiled by using the mouse in point/click/fine tune mode with LP-Pan/PowerSDR-IF in a 96 kHz span where there is no need for extreme accuracy in pointing, it's fast and easy. I think similar functionality would enhance the P3, just a suggestion. "Snap Tune" is an interesting idea too. 73, Bob NW8L On Wed, Aug 11, 2010 at 8:39 AM, Bill W4ZV wrote: > > > Bob Cunnings wrote: >> >> Yes, Ref Cal has been performed on both K3 and P3. The issue is ergonomic. >> > > Another thing I do is to align the Spectrum MKR with the Waterfall (no MKR). > The Center Line in the Spectrum Display interferes with the signal and MKR > so it's easier to align if you use Split Display mode with Spectrum MKR only > and align to the signal in the Waterfall immediately below. > > As I said before I also hope for some sort of Snap Tune, but I can do much > better than +/- 100-200 Hz with the current setup. > > 73, Bill > > P.S. Depending on which firmware rev you have there may not be a Waterfall > MKR available. There is in beta 00.30 but I don't use it for the above > reason. > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/P3-a-modest-proposal-for-QSY-tp5410950p5412535.html > Sent from the [K3] mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3: a modest proposal for QSY
Yes, Ref Cal has been performed on both K3 and P3. The issue is ergonomic. It's a matter of how accurately I can place the marker in the wider spans, especially when I need to move quickly. My near vision isn't so great, and the pixels on the display are tiny. At, say, a span of 50 kHz each pixel on the display is a 100 Hz bin (approx). If I'm off by a couple of pixels when I position the marker and tap SELECT, I'm at the very edge of my 400 Hz CW filter. Point and click tuning doesn't have to be such an exacting exercise if you could just place the marker approximately and then rapidly and accurately fine tune the signal by ear, all with the SELECT knob. I don't know what span you normally use, but I like using a span of at least 50 kHz so I can observe activity on the entire CW sub-band, and this would make hopping from signal to signal easier. Perhaps the implementation of external monitor support will help by expanding the display, but that's off in the future. Bob NW8L On Wed, Aug 11, 2010 at 7:56 AM, Bill W4ZV wrote: > > > Bob Cunnings wrote: >> >> >> With the P3, when I move the marker and tap the SELECT knob to QSY to >> the frequency of some CW signal, rarely end up at zero-beat, often at >> least 100-200 Hz away, sometimes more. >> > > While I agree with the need for a better zero-beat QSY function (I'm spoiled > by Skimmer's decoder dots), you should be able to come much closer than +/- > 100-200 Hz. Have you checked both your K3's Ref Cal (do that first) and the > P3's Ref Cal procedure? Using a 100 Hz BW (i.e. +/- 50 Hz) in the K3, I can > consistently hear QSY signals inside the 100 Hz passband. > > 73, Bill > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/P3-a-modest-proposal-for-QSY-tp5410950p5412345.html > Sent from the [K3] mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3: a modest proposal for QSY
P3 s/n 74 arrived today, went together nicely and works great. I'm still getting used to it, but as a long-time LP-Pan/PowerSDR-IF user, I was struck by one thing right away. With PowerSDR-IF point and click tuning with the mouse is enhanced by the fact that after pointing and clicking to change the K3 frequency, one may immediately "fine tune" the signal with the mouse scroll wheel. Especially for CW signals, this becomes second nature, a quick, fluid series of actions - point, click, fine tune up or down to zero-beat the signal (I do it by ear), using only one hand. This is good because I can't always point with perfect accuracy, so am often some tens or hundreds of Hz away from the desired signal. I set the scroll wheel fine tuning rate to either 10 or 50 Hz per step. With the P3, when I move the marker and tap the SELECT knob to QSY to the frequency of some CW signal, rarely end up at zero-beat, often at least 100-200 Hz away, sometimes more. So, in order to zero-beat I must move a hand to the K3 and tune it in or press SPOT. I'd rather finish the job using the hand already on the P3 SELECT knob, it's much easier that way when it's done repeatedly (search and pounce etc). I like panadaptor spans of 30 to 40 kHz, but even with narrower spans I just can't consistently get close enough to zero-beat with a CW signal on the P3 using the marker. What I'd like to propose is a P3 "fine tune" QSY mode (optional, controlled by menu setting), where the act of QSYing by tapping the SELECT knob not only changes the K3 frequency, but also: 1. Clears the marker. 2. Puts the P3 into a mode where turning the select knob one way or the other "fine tunes" the K3 at some rate like 200 Hz per revolution or so (a "fine" rate, maybe adjustable). 3. Then, after any required fine tuning is complete, one more tap of the select knob disables fine tuning, and it's business as usual. The marker is cleared in step 1 because otherwise turning the SELECT knob should continue to move the marker. So the flow goes like this, with the proposed "Fine Tune" QSY mode enabled in menu: 1. Tap MKR A to enable marker. 2. Turn SELECT knob to move marker onto desired signal. 3. Tap SELECT knob to QSY. The marker is cleared. Fine tuning of K3 is enabled. 4. Turn SELECT knob to fine tune (to zero-beat in the CW case, by ear or using CWT indicator) the desired signal. 5. Tap SELECT knob once more to disable fine tuning, returning to normal state. MKR B would get the same treatment. This would be perfectly general, working for all modes, and less tiring when QSYing repeatedly using the marker. Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] RF Main assembly VFWD & VREFL trace cut mod?
Thanks. In the absence of any mention of the trouble indication being addressed, I will assume the mod prevents problems with a feedback system such as KAT3 tuning, SWR protection for the finals, power control etc. which rely on the integrity of these signals. It's nice to have an understanding of the operational benefit of the mod before taking an Exacto knife to PCB traces. Bob NW8L On Sat, Jul 10, 2010 at 3:01 PM, lyle johnson wrote: > Yes > >> Is the purpose simply to prevent saturation of the ADC input... > > 73, > > Lyle KK7P/7 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K3] RF Main assembly VFWD & VREFL trace cut mod?
I'm about to install the REMIOUPDG replacement KIO3 digital i/o assembly. The instruction sheet (Rev B) includes a step which involves cutting 2 traces on the main RF board leading to pins 11 and 12 on P51, VFWD and VREFL. The instructions state that this "ensures the digital-to-analog converters (DACs) always receive the proper signal levels". A look at the schematic indicates that this mod is breaking the connection between these nets and U6 (analog mux) on the RF board. These signals seem to be the forward and reflected power outputs of the SWR bridge and are inputs to U8, a ADC78H90C ADC on the DSP board. So the instruction should perhaps read "analog-to-digital converters (ADCs)" unless I'm missing something. Indeed, the latest schematic warns "Vfwd/Vrefl traces @P51 must be cut on rev A PCB". Is the purpose simply to prevent saturation of the ADC input an thus inaccurate Power/SWR computations? Or is there more the story? What happens if it's not done? Just curious, I've been running these 2 K3 for over 2 years now without apparent trouble, and this change appears to have a purpose independent of the main purpose of the REMIOUPDG update (negative going ALC and band data output pullup mods). Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Regarding the K3 and high QRN levels
Have you looked at page 25 of the latest manual? http://www.elecraft.com/manual/K3_Owner%27s_Manual_Rev_D7sm.pdf NB and NR settings are explained there. Also, regarding NR settings, this was posted a while back by Lyle: http://www.mail-archive.com/elecraft@mailman.qth.net/msg81591.html in a discussion of changes to NR being made at that time (affecting settings F1-1 through F4-4, the fewer taps, the more "aggressive"). However there has been further change since then (e.g. the "mixed" settings described in the manual were restored later) so that explanation may or may not be current anymore. The manual plays it safe, only saying "In general, the higher the number, the more aggressive the noise reduction." without being specific about the meaning of the 2 digits in the setting. Bob NW8L On Fri, Jul 9, 2010 at 5:23 AM, ve7xf wrote: > I understand NB 'width' and 'depth' controls (for lack of > better terms) on other radios, so I know what's happening as > I adjust them. > > I am, however, confounded by the K3 settings - which one is > 'wider'?, which one is 'deeper'? Increased or decreased > effect with advancing numbers? > Am I overooking something in the manual? > An explanation would relieve some of my frustration with the > K3. > > Then we can work on the keyed PTT and the reverse CW. > > VE7XF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3/HL-1.2Kfx
> Lyle never said that. Someone was quoting my response and had my name > at the top followed by their assertion, and my comments a few paragraphs > down. Sorry about the wrongly attributing that remark to you, Lyle. Yes, I understand the case where ALC is mis-applied as a form of drive control, it's been frequently discussed here. It was the "last ditch" amplifier protection case mentioned by W5OV in an earlier message that to my mind seemed possible and maybe even recommended in the case of the K3/KPA500 system. That's why I asked - I wondered if the KPA500 will provide ALC output and if the amp protection case would be supported. Since it will be, and seems a desirable equipment safety feature, I'll plan on updating my older K3s to be compatible. It's easy nowadays with the availability of the REMIOUPGD KIO3 replacement boards. Bob NW8L On Sun, Jul 4, 2010 at 12:41 PM, Lyle Johnson wrote: > >> I'm curious as to whether or not Lyle's assertion "The K3 does have >> ALC output, but you shouldn't use it." > > Lyle never said that. Someone was quoting my response and had my name > at the top followed by their assertion, and my comments a few paragraphs > down. > > In fact, the K3 has ALC *input* that is compatible with most amplifiers, > assuming the K3 has the negative ALC mod. The negative ALC has been > standard in production for the K3 for many, many months now. > > In general, I suggest you set the K3 to run the amplifier at its normal > level, and have ALC connected in case something goes mildly wrong and > the amplifier requests drive be reduced , but before the amplifier > faults and goes off-line. One should never crank up the > transmitter/exciter to the amplifier, and then use ALC to throttle back > the drive as this usually leads to splatter and other undesirable traits. > > The ALC has not yet been activated in the KPA500, but will be soon. My > prototype KPA500 is operating nicely on the air with today's KPA500 > firmware update :-) . I set the drive from the K3 to get about 450W to > 500W on peaks. The amplifier is good to well over 600 watts, so that > leaves plenty of margin, better IMD, etc. > > 73, > > Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3/HL-1.2Kfx
I'm curious as to whether or not Lyle's assertion "The K3 does have ALC output, but you shouldn't use it." will hold strictly true for the future KPA500. I wouldn't be surprised at all if the tight integration between K3 and KPA500 presumes the use of ALC since it's "there". If so, I'll need to upgrade my early K3s, which shipped with the original oddball ALC scheme, so it would be nice to know in advance. Happy Independence Day! Bob NW8L On Sun, Jul 4, 2010 at 4:46 AM, wrote: > This subject comes up occasionally, and I would remind all of you that > Tokyo Hy-Power recommends the proper adjustment and use of ALC to provide > a safety limit on your power output from your radio - not a contast > "throttling" of your radio's output that would cause distortion like some > other solid state amp company seems to recommend(?). > > ALC in the context of a solid-state amp is not equivalent to an amplifier > using tubes. Period. > > So, bottom line, unless you are willing to assume the cost of repairs that > might be necessary due to overdriving a THP amplifier, one should not > advise to ignore the manufacturers' instructions. > > 73, > > Bob W5OV > Array Solutions > Tokyo Hy-Power Dealer & > THP Factory Warranty Service Center > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] scanning
As of firmware MCU 3.25 / DSP 2.21 six meter scanning has been available. From the release notes: * 6 METER SCANNING NO LONGER PROHIBITED. Scanning is limited to the 6-m U.S. ham band (50-54). Exception: In some countries the K3 won’t operate on 6 m at all. Bob NW8L On Sat, Jul 3, 2010 at 3:03 PM, WILLIS COOKE wrote: > Jack, you are not trying to scan on six meters are you? Six meter scanning > is blocked to comply with a FCC reg to keep people from eaves dropping on > cell phone conversations. The possibility of getting this changed has been > beat to death several times in the last couple of years so I hope we don't > start that again. > Willis 'Cookie' Cooke > K5EWJ > > > > > > From: Jack Colson > To: elecraft@mailman.qth.net > Sent: Sat, July 3, 2010 3:36:44 PM > Subject: [Elecraft] scanning > > I am unable to enable the scan function. I have stored two frequencies > in memory locations 90 and 91. According to the manual(version D4 page > 40) simply depress M>V, hold scan button for 2 seconds and you will see > AF ON. Well holding SCAN does nothing and do not see the AF msg nor > SCAN. > > This must be simple but it eludes me. I am running the latest F/W > version 4.03. > > Any thoughts? > > Thank you, > 73 > Jack, W3TMZ > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - ATU BYPASS relay/circuitry?
There is no bypass relay as such: http://www.mail-archive.com/elecraft@mailman.qth.net/msg84916.html Bob NW8L On Thu, Jul 1, 2010 at 12:04 PM, GW0ETF wrote: > > Maybe someone can answer this. > > Still trying to understand the K3 atu and why I still get random high swr > readings on some bands into a dummy load; when I switch in BYPASS I hear a > relay switching but I've never located this relay *or* the associated BYPASS > circuitry on the schematics, ie. I can't work out what BYPASS is actually > doing at the circuit level. > > Anyone know?? > > Stewart Rolfe, GW0ETF > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-ATU-BYPASS-relay-circuitry-tp5244635p5244635.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna Separation for Diversity
> Huh... Broadside to the vertical provided minimum coupling? Apparently so. See the article by K6STI in the Sept. 1995 QST "A Receiving Antenna that Rejects Local Noise" for an explanation. Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Coax Loss Figures
In Cisco parlance, "Low Loss" and "Ultra Low Loss" refers to classes of "Aironet" coax cable assemblies. On this data sheet: http://tinyurl.com/yr8fck we find these described in Table 8. If you indeed have part nbr "AIR-CAB100ULL-R" (where the ULL means Ultra Low Loss) then the attenuation is specified as 4.4 dB per 100 ft at 2.4 GHz. This puts it in the LMR600 class, < 0.5 dB attenuation per 100 ft at 30 MHz. Bob NW8L On Tue, Jun 22, 2010 at 9:16 PM, Brett Howard wrote: > I'm trying to find the specs on this chunk of coax that has the RP-TNC > connectors on it... I'm not having a lot of luck but perhaps someone is > more familar with it than I... Its just says Amphenol TWO 6001 9G > > Then the box just says its a Cisco Systems Ultra Low Loss Coax > Assembly... And being Cisco is why I get the joy of dealing with the > RP-TNC... ;) But hey the whole thing was free! > > ~Brett > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] One more question about CW operation
Yes, operation here is almost exclusively straight key or bug. I use my Swedish Pump style straight key at least 50% of the time, it's a dream to operate. Bob NW8L On Mon, May 31, 2010 at 7:54 AM, Alexey Kats wrote: > I apologize if my question is not related to elecraft products at all, > but I am simply curious... Of all fine folks using Elecraft > transceivers, do you still use straight keys or bugs? Or are you using > paddles and keyers all the time? > > I am asking because so many times I am hearing almost the same code on > the air with only two things changing - timing between letters and > words and QRS/QRQ. Which usually means that people use paddles. So I > wonder, do people still use straight keys these days? > > -- > Alexey Kats (neko) > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FT5000 review in Radcom
On Sat, May 22, 2010 at 8:33 AM, Hector Padron wrote: > Third in place ??? I will not believe it until I see the performance reports > from Sherwood labs. > > AD4C > Why not? I wouldn't be surprised to see incremental improvement in this area, now that it is finally receiving the attention it deserves. Contesters should be happy that more manufacturers are heeding the call to produce properly designed down conversion receivers in the mold of Orion, and K3. Choice is good. Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - SWR on Tx Gain Calibration
When in doubt, search the archives! http://www.mail-archive.com/elecraft@mailman.qth.net/msg69011.html http://www.mail-archive.com/elecraft@mailman.qth.net/msg84916.html Bob NW8L On Wed, May 5, 2010 at 11:07 AM, Mike wrote: > lstavenhagen wrote: >> For what it's worth, I definitely can't replicate this on my K3. The ATU is >> definitely is bypassed when I select bypass on 10M (in both ANT sockets). >> Do you hear the relay clicking when you switch back and forth between bypass >> and inline? >> >> 73, >> LS >> W5QD >> > I had a question about bypassing the ATU a while back. If I remember > correctly (put the IF in caps), I was told it is not completely out of > the circuit when it's bypassed. > Don? Lyle? Wayne? > > 73, Mike NF4L > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: PSK-31 Power Settings
Sorry, now I see that you did, in an earlier post. The context was lost (trimmed away) by the time the statement quoted below was made, so I took it at face value. I only remarked on this because the advice for any other rig in the world is to set audio for very little or no ALC indication. The requirement that the K3 be set for 4-5 bars of "ALC" has been a source of confusion for digital mode setup since the beginning, as a search of the archives will reveal. Bob NW8L On Wed, Apr 28, 2010 at 11:10 PM, Don Wilhelm wrote: > Bob, > > I thought I explained that the K3 "ALC" meter is like a VU meter for the > first 4 bars - the ALC indication starts at the 5th bar. > > 73, > Don W3FPR > > Bob Cunnings wrote: >> >> On Wed, Apr 28, 2010 at 8:14 PM, Don Wilhelm wrote: >> >> >>> >>> but the K2 (and K3) control the output level prior to the balanced >>> modulator, and will have trouble if used that way. Set the power to the >>> level that is desired and then adjust the audio for no ALC for digital >>> modes. >>> >>> >> >> Except for the K3 which requires that audio be set for 4-5 bars ALC >> for digital modes. >> >> Bob NW8L >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2: PSK-31 Power Settings
On Wed, Apr 28, 2010 at 8:14 PM, Don Wilhelm wrote: > but the K2 (and K3) control the output level prior to the balanced > modulator, and will have trouble if used that way. Set the power to the > level that is desired and then adjust the audio for no ALC for digital > modes. > Except for the K3 which requires that audio be set for 4-5 bars ALC for digital modes. Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Notch
No. This question comes up once in a while. Lyle made a couple of statements on the subject in a past thread: http://www.mail-archive.com/elecraft@mailman.qth.net/msg62779.html and http://www.mail-archive.com/elecraft@mailman.qth.net/msg62885.html Perhaps it's "on the list" for future consideration. Bob NW8L On Mon, Apr 26, 2010 at 10:23 AM, N1JM wrote: > > I hardly ever use notch. I recently noticed that the notch doesn't reduce the > carrier as shown on the S-meter. Is it not in the agc loop? > > John N1JM > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-Notch-tp4963433p4963433.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] attenuator in amp was Re: K3 and Expert 1K-FA
On Wed, Apr 21, 2010 at 3:14 PM, Eric Swartz - WA6HHQ, Elecraft wrote: > You will need the mod. Ah. Will the ALC connection be prescribed as mandatory for the K3/KPA500 system? Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 shipping status query
According to the order page: http://www.elecraft.com/elecraft_prod_list.htm#k3 they start shipping July 15th. Bob NW8L On Mon, Apr 19, 2010 at 8:33 PM, David F. Reed wrote: > for those of us who already first day ordered our P3s, when might we > anticipate their shipping? > Or, failing that, when might we see the P3 added to th shipping status page? > > Not trying to rush things, just being curious. > > 73 de Dave, W5SV > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 button problem question
Yep, according to the schematic, these are all associated with the SCANADC1 line. SPOT is also on that line, do you have trouble with that button? A while back I had trouble with some of the buttons on the SCANACD3 line in K3 #495 - Width and AFX in particular, but after a few days the problem went away suddenly - I have no idea why. Bob NW8L On Sat, Apr 17, 2010 at 11:55 PM, Dave Hachadorian wrote: > Interesting. I also have several buttons that don't work on my > K3: > band up > mode up > ant > shift/lo/norm > rate/lock > NR > > The radio is still usable, and I'm waiting for a break in the > contests to send it in for repair. > > Dave Hachadorian, K6LL > Yuma, AZ > > > -- > From: "Paul Ferguson" > Sent: Saturday, April 17, 2010 7:28 PM > To: > Subject: [Elecraft] K3 button problem question > >> Seven of my front panel buttons do not function on K3 #757. I >> also used the >> Switch Test to see that they give no scan codes. All other >> buttons work OK. >> >> Looking at the the schematic for the "Front Panel - Switches" I >> see these seven >> buttons are all connected to the SCANADC0 line into U3. I took >> off the front >> panel and put an ohmmeter from ground to the SCANADC0 line, and >> it gives a few >> ohms. The other lines (SCANADC1-7) show as open. >> >> I looks like either U3, C30, or R27 is bad. Does anyone see any >> other >> possibilities? >> >> I don't relish replacing U3 since it is a 16-pin IC. Maybe some >> Chip-Quik or >> tiny cutters to snip the leads would ease the job. >> >> 73, >> Paul >> K5ESW >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: >> http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Cooling
They are exhaust fans, blowing air out. The manual states that the fans must be oriented so that the manufacturer's label faces outward. This is correct, since the convention is that the air flows in the direction of the label on the fan. Bob NW8L On Sun, Apr 4, 2010 at 4:16 PM, Jim Harris wrote: > > Hi Folks, > > Which way is the air flow supposed to be through the fans on the K3? Mine > blows out, pulling air in from the slots in the top above the KPA3. (My K2 > blows in.) The manual doesn't seem real clear on which way to install them > in the K3. > > My K3 is nearing eight months old and doesn't seem to have a major cooling > problem. But, I do some heavy RTTY contesting and I've occasionally seen the > PA temp at over 60 degrees centigrade. I'm considering adding a fan on half > inch stand offs from the bottom of the shelf above the radio to blow through > the slots in the top of the K3. Will this disturb normal airflow around > other components possibly causing them to overheat? > > In the past I installed an external fan on two off-shore radios and it seemed > to improve cooling. I want to be sure I have the fans installed correctly > and there would not be other problems before proceeding. > > Thanks everyone. > > CU in the Colorado QSO Party Sept 4th, 2010. > > 73, Jim, W0EM > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] {K-3} K144XV
Why does the data sheet for the K144XV state "2-meter receive on both main and sub receivers" and "With the sub receiver installed, you can listen to a repeater’s input and output frequencies simultaneously." http://www.elecraft.com/manual/K144XV%20Data%20Sheet%20rev%204sm.pdf Bob NW8L On Fri, Mar 19, 2010 at 12:13 PM, Phillip Buckholdt wrote: > Thanks to all who replied, several said 2 meter recption is not possible on > the sub. > I thought it was, Yes on both the main and sub. > When I put a 2M freq in the sub, just Ant apperas in the display, I guess it > won't work in ths Sub > > Thanks > Phil > K8MBY > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3DSPLPF Low Pass Filter
I also installed the LPF in 2 K3s here this weekend. Although I have pretty good hearing, I was skeptical about any possible improvement. However, I was surprised when I turned on the 1st unit completed. The improvement was noticeable (I use headphones with a wide frequency response). CW notes are purer, and atmospheric noise less grating. AF output from the headphone jack looks very clean now when viewed on Spectrum Lab, previously the artifacts were no better than 60 dB down with strong signals. There is no change to the line out audio, which uses a separate DAC and audio path. All vias were solder filled on both units, but I was able to clear them with solder wick and the installation went smoothly. The instructions are very clear. I also did not make the change to extend low frequency response. Bob NW8L On Mon, Mar 1, 2010 at 11:02 PM, Joe Planisky wrote: > I recently installed the LPF. I did *not* make any other changes > (e.g. to extend the low frequency response.) I work mostly CW but do > a fair amount of listening to SSB and SWBC. > > In my case, the effect is rather subtle and I can't be sure it's not > just a placebo effect, but I think CW notes and SSB voices sound a bit > smoother. I haven't used it for a long period of time since I > installed the LPF, so I can't really tell if it's less fatiguing. > > Like Brett, I have before and after spectrum plots which clearly show > that the aliased passband images centered on 12 kHz are completely > gone. However, in my case the 12 kHz clock leakage itself is still > there. It must be getting into the output some other way than through > the normal audio path. > > It was one of the more challenging mods that I've done to my K3, > mostly due to the fact that 4 of the 6 vias used were filled with > solder, two of which have an IC on the other side preventing the use > of a hot needle to clear them. And I'm *always* nervous cutting > traces. That said, it wasn't really difficult. I took my time and > spent about 2 hours from power off to power on. > > I noticed the price on the LPF board has gone up to $35. When I > ordered mine it was $25. Was it worth it? I think so. I wouldn't > call it a whole-new-rig difference but I seem to think the rig is a > bit more pleasant to listen to. > > 73 > -- > Joe KB8AP > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - 'High Isolation Headphones'
Yes, I've learned that there is a difference between headphones with foam type cushions vs. those with the gel-type cushions (and an NRR rating), such as the Dave Clark products. The sound of a door closing is a good indicator. I always come back to using my Dave Clark 10S-DC stereo headset, with NRR 23dB, because I operate in a very noisy part of the house and find that it offers the best isolation over a wide frequency range. I hear a lot of complaints about Dave Clark being uncomfortable to wear, some based on experience many years ago, but find the 10S-DC to be just fine myself - perhaps the cushion design has improved over time? Bob NW8L On Wed, Mar 3, 2010 at 7:09 AM, Wes Stewart wrote: > I'm an early advocate of the CM-500 (I bought mine in June of last year) but > I don't think that they are quite as good for isolation as Hector does. > > In fact, what I notice is that certain noises come through "apparently" > stronger, since most other noises are eliminated. One of those is the sound > of a door closing. I often have to yank them off and go determine what's > going on, since it sounds like it's been slammed. I'm often wondering > whether the XYL is POed because I'm spending too much time on the radio :-) > > I also have an H10-30 David Clark headset and I can guarantee this doesn't > happen with it. Not quite as comfortable tho... > > Wes > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Use of CC1 K Heil Mic Cable
According to pg 13 of the K3 manual: "MIC An Elecraft MH2, MD2, Proset-K2, or other compatible mic can be used (see pinout below). To select the front- or rear-panel mic, and to turn bias on/off, use the MAIN:MIC SEL menu entry. Bias must be turned on for electret mics (e.g. MH2, MD2, Proset). It must be off for dynamic mics (e.g. Heil mics using HC4 or HC5 elements)." My MH2 hand mic works fine here with a K3. Since the pin configuration on a K2 is adjustable, using jumpers on the front panel, maybe it is different. The KSB2 manual has a table explaining the jumper settings for various microphones. Bob NW8L On Sun, Feb 28, 2010 at 9:03 AM, KM4VX wrote: > > I use the Heil CC1 K cable and a Heil mic for my K3, and it works fine. I > tried the same CC1 K cable and Mic on the K2 and it does not work. I assume > the Kenwood mic configuration for the K3 is correct but that is not true for > the K2. Correct? I have the Elecraft MH2 hand mic for the K2 and it works > fine, so the radio is not the problem. Are the pin configurations different? > Why would Elecraft do that? I am asking if the pin configurations are > different because I can't believe they are? The MH2 mic also does not work > with the K3. Is that also correct? This is a little crazy guys. Thanks > -- > View this message in context: > http://n2.nabble.com/K2-Use-of-CC1-K-Heil-Mic-Cable-tp4649314p4649314.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 auto spot function
Flex/PowerSDR has long had a feature called "Zero Beat – RIT". When "on", pressing the "0 Beat" button (like CWT) moves the RIT, not the tx frequency. I once saw an allusion to it in the context of contesting, where the op keeps tx fixed on a run freq, but wants to retain the 0 beat option for callers in some cases. Bob NW8L On Wed, Feb 24, 2010 at 8:52 PM, The Smiths wrote: > > Blaa blaa blaa blaa blaa, yet again, you people can't just let something be > without over analyzing it. Fine, it's not Zero Beating.. It's Zero Noting.. > Now that we have that out of the way... __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Search
Yes, a couple of searchable archives are listed here: http://www.elecraft.com/elist.html Bob NW8L On Wed, Feb 24, 2010 at 6:09 PM, Dick Frey wrote: > Is it possible to search the Elecraft reflector archives? > I go to the archives and it seems you have to do it by month. > There > > -- > Dick - K4XU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
> The DSP code is written entirely in assembly language. Don't ask how I > know... :-) The better to fully exploit the power of the processor. Using SHARC floating point family here at work, where use of assembly language programming allows maximum utilization of the dual FPUs in SIMD mode. Now working with an X version of the new SHARC 469 part, clocked near max, with a 48 kHz sample rate, 9 x 1024 = 9216 instructions per audio frame are available - truly an embarrassment of riches! Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Programming language and tools used by Elecraft and other for PIC programming - OT
I do a lot of PIC18 programming at work in C and use the Hi-Tech C compiler for that microcontroller family. A free "Lite" version is available for download. Bob NW8L On Sun, Feb 7, 2010 at 12:09 PM, Ken Nicely wrote: > This is a little off topic as it is not something that might be of great > interest to some owners of Elecraft equipment unless they are into software > as I am. This reflector seems to be pretty knowledgeable and much more > technical than most, so I am posting this to the reflector as there might be > a few others here that would find it of interest. > > Recently I have started learning how to program PIC controllers, partly > because I am interested and curious about how it is done and partly because > I would like to start building some of my own software controlled radio > electronics. I am wondering what language Elecraft uses for programming > their radios and what software package they use. I am leaning towards using > C in my projects using the Microchip compilers, but I have also looked into > the Swordfish basic compiler and the mickoBasic Pro compiler as I know > Visual Basic.net very well. > > I would also be interested in knowing if there are others on the list that > have done some PIC programming and what language and software they use or > would recommend. > > Ken Nicely KE3C > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Reflector Traffic
At least one of these is recurring theme, reappearing from time to time - the straight key decode (on sending) request. It's been the subject of threads in the past, one of which culminated in this response from Eric: http://www.mail-archive.com/elecraft@mailman.qth.net/msg65027.html which is the last word from the factory that I can recall. This, and many other interesting discussions of old can be found "in the archives". Bob NW8L On Sun, Jan 24, 2010 at 3:01 AM, wrote: > Hi, > > Is the factory on holidays or is it my imagination that I am not seeing much > in the way of comments and or responses to several requests for minor changes > to the FW? > > Seems like a couple of interesting changes are being sought by K3 users where > as in the past we have had quick comments etc from the factory. > > I think the narrow Tx filter option seems reasonable to me and I think it > would be very handy. Same with the straight key decode function, I too could > not see why it cannot be activated in the FW. > > I also read comments on the P3 but nothing forthcoming from Aptos, or is it > Watsonville now. > > Does anyone know when the P3 will be ready for release or is it being held up > till Dayton. > > Sorry for the bandwidth but I am curious. > > 73's > Gary > VK4FD > Sent via BlackBerry® from Telstra __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] New K3 DSP Board
Lyle posted this a while back: http://www.mail-archive.com/elecraft@mailman.qth.net/msg83487.html describing the changes. Bob NW8L On Sat, Jan 23, 2010 at 7:55 AM, Roy Morris wrote: > If the new DSP board does not improve the low frequency response in receive > audio unless the bandpass is adjusted as some have suggested, I wonder what > it is intended to do. Is it supposed to improve the low frequency > transmitted audio? What can the new DSP board do that the TX EQ and RX EQ in > the MAIN menu not do? Roy Morris W4WFB > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Delay in monitor audio - it aint there!
Here's an interesting piece on K3 transmit audio processing: http://www.cliftonlaboratories.com/elecraft_k3_speech_processing.htm where it is reported that "There's 31 milliseconds of processing delay in the K3's DSP stages between microphone input and monitor output..." using the setup described in the article. The date is 15 March 2009. Bob NW8L On Thu, Jan 21, 2010 at 2:53 PM, Lu Romero wrote: > To those of you who were complaining about the delay in the > K3 audio monitor chain, I am curious what you are hearing. > > After reading the thread, and playing around with the radio > for a few days critically listening for this issue, I dont > hear a problem. > > Maybe its a matter of your listening through a sound card or > some other external device. Or maybe you have external > digital processing after your microphone. However, with a > microphone plugged in directly (OK, through a microHAM > MicroKeyerII then into the K3) and my headphones plugged in > to the front panel headphone jack, I do not hear any > discernable delay in the audio feed when listening to myself > in the audio monitor of the rig. > > And before I get flamed for not knowing what to listen for, > Im "learned" in audio delay issues... As a broadcaster, I > understand audio delay and can see lip sync problems down to > around 2 video frames (just ask ABC and Fox TV Network > Control centers, they probably curse me even today). > Newspeople have complemented me on my attention to their > audio delay problems in their IFB and ProChannel feeds for > years (rare for them, because usually they only talk to > engineers when things are broken or they want a free tape > for their resume reel). > > Lu Romero - W4LT > K3 #3192 > > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] K3DSPUPGD
This question has been asked several times recently, without direct response from Elecraft. However, W4TV apparently made contact and posted an answer the other day: http://www.mail-archive.com/elecraft@mailman.qth.net/msg87611.html Bob NW8L On Sat, Dec 19, 2009 at 8:33 AM, wrote: > I find no actual description of what the K3DSPUPGD (REV C) consists > of. Does it include the lowpass audio filter that everyone keeps talking > about, or is that an additional add on to the REV C DSP board? > > Could someone from Elecraft please straighten me out on this so I > can determine if there is something additional I need to order for the REV C > DSP upgrade board? All this talk on the subject has got me confused. > > > Stan Rife > W5EWA > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Fw: Hardware Differences K3
Hmmm, no mention of the (hardware) AF low pass filter in the announcement quoted below... can Elecraft confirm/deny? There is no documentation of the K3DSPUPGD option on the order page, and nothing in the "K3 Alerts, Enhancements and Application Notes" page either. Bob NW8L On Wed, Dec 16, 2009 at 1:56 PM, Steve Ellington wrote: > We started shipping the current DSP boards, Rev C, approximately March > 6th, 2009. > Any K3 DSP board Rev C or later will have the extended low end audio > frequency response h/w enhancement. > > This corresponds approximately to K3 serial number 2800, plus or minus > 10-20. Since assembled -Fs and kit K3s flow through different > manufacturing paths, there is a slight variance in s/n for the phase-in. > If in doubt, check the DSP board Rev as noted above. > > These changes basically added additional h/w low end frequency response > below 300 Hz. You need to also have the latest K3 f/w to take advantage > of this. Of course, you can also tailor (and limit) your RX and TX > response via the K3's IF Shift and B/W controls and by using the TX and > RX Equalizer entries. > > A picture of the Rev label location on the DSP board and additional info > is at: > http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm > > (The 'C', or later, revision letter at the bottom of the label is what > is important.) > > We have added to our parts and mod kits page an option, K3DSPUPGD to > swap out your current DSP for one upgraded to the latest Rev C changes. > The cost will be $69.00 plus shipping. Order placed via this page will > start shipping approximately in 4 weeks, around Nov 9. > > Steve > N4LQ > n...@carolina.rr.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] antenna farm
And, if you don't have enough space for a radial field on the ground, try a vertical doublet, center fed with balanced line for multi-band operation. I've been using one for years which is 32 ft. tall and can be loaded easily from 30 meters to 15 meters. Much better for dx than my low dipole and the elevated feedpoint (at 16 ft.) seems to help overcome ground clutter (enclosing block walls etc.). The wire is supported by a 32 ft. telescoping fiberglass pole, with footprint less than one square foot! Bob NW8L On Mon, Dec 14, 2009 at 12:58 PM, Ron D'Eau Claire wrote: > As Ken mentioned, height is an important factor in a horizontal or > semi-horizontal antenna. There's limited "gain" in any direction at low > angles unless the radiator is 1/2 wavelength above ground. That's why most > of us have to live with little directivity on the lower bands. > > The option is to consider verticals. Unless you are living on salt water (or > atop a sheet of copper), or can make the vertical a full 1/2 wave high, the > vertical won't be as efficient as doublet or dipole, but a vertical will > produce typically much better signals at lower angles of radiation than a > horizontal antenna (under 1/2 wave high) and doesn't require a huge > 'footprint'. Also you can phase multiple verticals for directivity and even > design them so you can use them for supports for horizontal wires on the > higher bands. > > You've probably noticed that 45 foot verticals are being heavily promoted > these days. That's an old design that is very handy for limited space. It > provides low angles of radiation on all bands up through 20 meters where > it's 5/8 wavelength high (on bands where it's more than 5/8 wavelength the > angle of the main lobe rises from the horizontal and minor lobes appear at > high angles). Down on 80 meters it's just a bit shy of 1/4 wavelength. With > a good ground system it can produce excellent results down there and even on > 160 - especially when compared with the short, low (in wavelengths above > ground) antennas most of us are forced to use on those bands > > Ron AC7AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 shuts off
Yes, the K3 has the ability to display voltage and current drain. See pg. 36 of the manual, under "VFO B Alternate Displays". Bob NW8L On Sat, Dec 12, 2009 at 8:47 PM, Mike wrote: > I was at a friends today, looking at his K3. It's in the 1000 range of > serial numbers, not a kit. > > If power is set above 95-96 watts, the rig shuts down instantly when you > transmit (at least in CW and if you press the TUNE button. Didn't try it > on any other modes). > > His power supply reads 14.6V, it's a 20A supply, but we didn't read it > under load. Does the K3 have the ability to display voltage and current > draw? > > I downloaded and installed 3.68 firmware, but the problem was there before. > > Clues and hints, please? > > 73, Mike NF4L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Noise blanker board
Well, according to the K3 schematic, pin 5 of the connector shows 'no connection'. This would be the 8th pin from one end. Bob NW8L On Wed, Dec 9, 2009 at 4:14 AM, Mike Weir wrote: > > Good morning all > Almost finished putting the K3 all together but last night I did notice while > putting the NB board on the 8th pin from the left was missing. I ended up > plugging it into the main board but will wait to find out if this is > intentional or defective before I power up the unit. > Thanks > Mike > VE3WDM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: CW feature request
Sorry, I was confusing the two, you did say *Sideband* 9.001 after all. So in the case where the IF is 5 MHz and the VFO is 9 MHz, we have: Subtract 5 MHz IF: VFO 9.000 - 5.000 = 4.000 MHz VFO 9.000 - Sideband 5.001 = 3.999 MHz ==> LSB where we do see the inversion of the sideband. Bob NW8L On Thu, Dec 3, 2009 at 11:34 AM, Alan Bloom wrote: > No, we're talking about sideband direction, not VFO tuning direction. > > Al > > > On Thu, 2009-12-03 at 08:15 -0700, Bob Cunnings wrote: >> Er, hold on. you write: >> >> > Subtract 5 MHz VFO: >> > Carrier 9.000 - 5.000 = 4.000 MHz >> > Sideband 9.001 - 5.000 = 4.001 MHz >> > ==> USB >> >> but shouldn't it be: >> >> Subtract 5 MHz VFO: >> Carrier 9.000 - 5.000 = 4.000 MHz >> Sideband 9.000 - 5.001 = 3.999 MHz >> ==> LSB >> >> Since we changing the VFO, not the IF freq? >> >> Bob NW8L >> >> On Wed, Dec 2, 2009 at 10:39 PM, Alan Bloom wrote: >> > On Wed, 2009-12-02 at 21:06 -0800, Alan Bloom wrote: >> >> On Wed, 2009-12-02 at 18:36 -0800, wb6r...@mac.com wrote: >> >> > LSB on the lower bands and USB on the higher bands is an artifact of >> >> > the mixing scheme, from the early days of SSB, of a 9 Mc IF mixed with >> >> > a 5.0 - 5.5 Mc VFO. (Yes, it was Mc in those days, not MHz.) Add and >> >> > you get 20m. Subtract and you get 80m. The subtraction results in >> >> > sideband reversal and so LSB became the "standard" for 80m. There is >> >> > really no reason now to not to just operate USB on all bands other >> >> > than tradition. >> >> >> >> I've heard people say that many times over the years but clearly it's >> >> not true. A 9 MHz IF set up for (let's say) USB will still be USB no >> >> matter whether you add or subtract the 5-5.5 MHz VFO. >> > >> > I just did a little Googling on the Internet (AC6V.com and elsewhere) >> > and discovered to my astonishment that this is an actual bona-fide >> > controversial subject among radio amateurs. Despite the fact that a >> > simple 2-minute back-of-the-envelope calculation is all it takes to >> > disprove the myth. For the record: >> > >> > Intermediate frequency: >> > Carrier 9.000 MHz >> > Sideband 9.001 MHz >> > ==> USB >> > >> > Add 5 MHz VFO: >> > Carrier 9.000 + 5.000 = 14.000 MHz >> > Sideband 9.001 + 5.000 = 14.001 MHz >> > ==> USB >> > >> > Subtract 5 MHz VFO: >> > Carrier 9.000 - 5.000 = 4.000 MHz >> > Sideband 9.001 - 5.000 = 4.001 MHz >> > ==> USB >> > >> > I can't believe people are actually arguing about this! >> > >> > Al N1AL >> > >> > >> > __ >> > Elecraft mailing list >> > Home: http://mailman.qth.net/mailman/listinfo/elecraft >> > Help: http://mailman.qth.net/mmfaq.htm >> > Post: mailto:Elecraft@mailman.qth.net >> > >> > This list hosted by: http://www.qsl.net >> > Please help support this email list: http://www.qsl.net/donate.html >> > >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: CW feature request
Er, hold on. you write: > Subtract 5 MHz VFO: > Carrier 9.000 - 5.000 = 4.000 MHz > Sideband 9.001 - 5.000 = 4.001 MHz > ==> USB but shouldn't it be: Subtract 5 MHz VFO: Carrier 9.000 - 5.000 = 4.000 MHz Sideband 9.000 - 5.001 = 3.999 MHz ==> LSB Since we changing the VFO, not the IF freq? Bob NW8L On Wed, Dec 2, 2009 at 10:39 PM, Alan Bloom wrote: > On Wed, 2009-12-02 at 21:06 -0800, Alan Bloom wrote: >> On Wed, 2009-12-02 at 18:36 -0800, wb6r...@mac.com wrote: >> > LSB on the lower bands and USB on the higher bands is an artifact of >> > the mixing scheme, from the early days of SSB, of a 9 Mc IF mixed with >> > a 5.0 - 5.5 Mc VFO. (Yes, it was Mc in those days, not MHz.) Add and >> > you get 20m. Subtract and you get 80m. The subtraction results in >> > sideband reversal and so LSB became the "standard" for 80m. There is >> > really no reason now to not to just operate USB on all bands other >> > than tradition. >> >> I've heard people say that many times over the years but clearly it's >> not true. A 9 MHz IF set up for (let's say) USB will still be USB no >> matter whether you add or subtract the 5-5.5 MHz VFO. > > I just did a little Googling on the Internet (AC6V.com and elsewhere) > and discovered to my astonishment that this is an actual bona-fide > controversial subject among radio amateurs. Despite the fact that a > simple 2-minute back-of-the-envelope calculation is all it takes to > disprove the myth. For the record: > > Intermediate frequency: > Carrier 9.000 MHz > Sideband 9.001 MHz > ==> USB > > Add 5 MHz VFO: > Carrier 9.000 + 5.000 = 14.000 MHz > Sideband 9.001 + 5.000 = 14.001 MHz > ==> USB > > Subtract 5 MHz VFO: > Carrier 9.000 - 5.000 = 4.000 MHz > Sideband 9.001 - 5.000 = 4.001 MHz > ==> USB > > I can't believe people are actually arguing about this! > > Al N1AL > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KUSB Adaptor
On Fri, Nov 20, 2009 at 10:44 AM, Matt Palmer wrote: > inside the radio Not to mention the exercise in writing drivers > alone is herculean. Not if you use the FTDI parts. *They* write the system driver, and supply a complete driver package for 32 and 64 bit Windows. All the application programmer needs to do is interface with it via an easy to use .dll. The latest driver packages from FTDI are even signed. Here at work I've used FTDI parts to embed a USB device ports in our gadgets (including UHF radio receivers) for years now without any heartburn. FTDI will even allow you to customize the driver package (to "brand" the USB driver with your own company name and tailor it to your company's own USB vendor and product IDs) and get it re-signed by Windows Hardware Quality Labs (Winqual) under the "DUA" program. I did this for our latest product family and it only required an expenditure of 99 bucks for a Verisign Organizational Certificate (for signing purposes) and some of my time to navigate the admittedly arcane DUA submission process at Winqual. Bob NW8L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 SWR Accuracy - reprise
Speaking of the KAT3, Jack's report doesn't state whether or not his K3 contains the KAT3 module or not, and what state it's in. Bob NW8L On Sun, Nov 8, 2009 at 9:07 PM, Wayne Burdick wrote: > Great data, Jack. We've been testing this, too, and we know why the > K3's readings differ. > > A firmware change will be made to improve the accuracy in general. But > part of the difference on the higher bands is due to strays in the > KAT3 module. These strays can be tuned out by the KAT3 itself, thus > presenting the correct load to the K3 internally. But an external > instrument is on the other side of the KAT3 and thus sees a slightly > different match. > > We'll post additional details soon. Meanwhile, no one need worry about > this apparent discrepancy. The ATU is cancelling its own strays, and > the SWR bridge is correctly reporting the load presented to the > transceiver internally, which is the important thing when matching the > rig to its load. > > 73, > Wayne > N6KR > > > > http://www.elecraft.com > > On Nov 8, 2009, at 7:18 PM, "Edward Dickinson, III" > wrote: > >> _ >> >> From: Jack Smith [mailto:jack.sm...@cliftonlaboratories.com] >> Sent: Sunday, November 08, 2009 10:00 PM >> To: Edward Dickinson, III >> Subject: Re: [Elecraft] K3 SWR Accuracy - reprise >> >> Dick: >> >> http://www.cliftonlaboratories.com/swr_accuracy.htm >> >> I posted a message to the Elecraft reflector about the page being >> available >> but it has not shown up after an hour and a half. >> >> Jack K8ZOA >> >> >> Edward Dickinson, III wrote: >> >> Hi Jack. >> >> >> >> I extend invitation to apply your expertise regarding the matter being >> >> addressed in above referenced discussion. >> >> >> >> >> >> Best regards, >> >> >> >> Dick - KA5KKT >> >> >> >> >> >> >> >> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
