Re: [Elecraft] [K3] Receiver overload point?
Hi Bob thanks. The receive converter has an input 1dB compression point of about -5dBm, and a conversion gain of around 22dB. So before it overloads it will be delivering +17dBm to the K3, which is a seriously big signal. I already run with the K3 attenuator in, next move is to add attenuation between the transverter and K3 so that I only hear a slight increase in noise when the transverter is switched on. At this stage, it would be useful to know when the K3 overloads. At least I will then know where the limitations of my system are. 73 Ian On 14/06/2012 00:21, riese-k3...@juno.com wrote: I generally dont chime in on issues but I believe the bigger problem may be how well your converter handles the strong signal unless someone is tx a bad signal ( distortation ) I have never had overload ' issues on 75 meter the DEM stuff is pretty good,, not sure what else is outthere Bob K3DJC On Wed, 13 Jun 2012 21:42:58 +0100 G0AFHg0...@g0afh.com writes: Hi What is the largest signal that I can reasonably expect the K3 to handle before overload? I am using my K3 with an external transverter for 2m and have a very large in band signal to deal with. If it makes any difference, I am transverting from 14MHz. 73 Ian. __ 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] [K3] RX Attenuator value, and COR activation level.
Hi, What is the value of the RX attenuator in the K3? At what level does the carrier operated relay protection operate? 73 Ian G0AFH __ 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 Attenuator value, and COR activation level.
Thanks for the link. I recall seeing the wire when I checked to see if the IF out level mod had been done. 73 Ian On 13/06/2012 10:16, Brett Howard wrote: If you want to check and be absolutely certain check this document out: http://www.elecraft.com/K3/mods/K3%20rx%20protection%20mod,%20rev%20B.pdf ~Brett (N7MG) On Wed, Jun 13, 2012 at 2:14 AM, g0afh g0...@g0afh.com mailto:g0...@g0afh.com wrote: Thanks, useful to know. I am trying to optimise my 2m system to deal with some exceptionally strong signals. The transverter o/p can reach about +15dBm before compression, but I think the K3 may be overloaded before then. I managed to activate the COR during testing last night. My K3 was made in June 2010 so should have the extreme signal protection mod. 73 Ian G0AFH. On 13/06/2012 09:19, Brett Howard wrote: the ATTN is 10dB. Not sure where the CORs activate however. I do know that I've hit them before though.. :) Not sure if this helps you but I do also know that you can get to +20dBm and as long as you have the extreme signal protection mod done to your radio (or it was built after 9/1/2009) before the CORs are activated and your ATT will be automatically engaged to protect the RX post amp. ~Brett (N7MG) On Wed, Jun 13, 2012 at 12:52 AM, g0afh g0...@g0afh.com mailto:g0...@g0afh.com wrote: Hi, What is the value of the RX attenuator in the K3? At what level does the carrier operated relay protection operate? 73 Ian G0AFH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net 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] [K3] Receiver overload point?
Hi What is the largest signal that I can reasonably expect the K3 to handle before overload? I am using my K3 with an external transverter for 2m and have a very large in band signal to deal with. If it makes any difference, I am transverting from 14MHz. 73 Ian. __ 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] 70 MHz on K3
As an alternative to the 2m transvereter... 73 Ian G0AFH On 28/05/2011 08:43, John Lemay wrote: That would be nice. I raised this question many months ago and don't recall seeing a reply from Elecraft. My guess is that the bandpass filters won't permit this, but we can hope ! John G4ZTR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Eric-Jan Wösten Sent: 28 May 2011 08:33 To: elecraft@mailman.qth.net Subject: [Elecraft] 70 MHz on K3 Hi, Any chance K3 will be able to have 70 MHz rx/tx ? vy 73 Eric, PA3CEV __ 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 __ Information from ESET NOD32 Antivirus, version of virus signature database 6159 (20110527) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __ Information from ESET NOD32 Antivirus, version of virus signature database 6159 (20110527) __ The message was checked by ESET NOD32 Antivirus. http://www.eset.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 - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1375 / Virus Database: 1509/3663 - Release Date: 05/27/11 __ 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] 2nd RX
And another... With a suitable dual rx 2m transverter and two arrays I can listen to two directions at once. Very useful in contests. 73 Ian G0AFH. On 04/03/2011 18:16, Wayne Burdick wrote: Actually there's a fourth reason. If you use QRQ CW mode (ultra-fast break-in), you can't normally use split or RIT. But if you have the sub receiver installed, you can transmit on VFO A and receive on VFO B, which will achieve the same goal in many situations. 73, Wayne N6KR On Mar 4, 2011, at 10:10 AM, Wayne Burdick wrote: Hi Lee, There are three reasons you might want the sub-RX: (1) diversity; (2) listening to both your RX and TX frequencies when operating split; (3) monitoring one band while you operate on the other. The K3's sub RX has identical performance to the main RX, so it excels at all of these applications. 73, Wayne N6KR Lee Buller wrote: I am curious What is the benefit of a 2nd RX in 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 __ 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] a P3 first impression
Just wait until your neighbour installs power line networking :-( You won't need a P3 to tell when it's on. 73 Ian G0AFH. http://ban-plt.co.uk/ On 14/02/2011 18:56, Bill W4ZV wrote: Dunc Carter - W5DC wrote: It has an added benefit in that I can tell if my neighbor's horrible new plasma TV is on without having to get near the rig. If the waterfall is all green, there is no point in trying to operate. On 80, the plasma TV raises my noise floor from - 102 dBm to - 82 dBm.on 80 and the only band that it doesn't wipe out is 15 meters. I wish some retired ham attorney would file a class action lawsuit against all plasma TV manufacturers and the FCC. How in the world did this technology ever meet FCC Part 15 regulations in the first place? It's a travesty that this technology was ever allowed in our borders! 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] [K3] Enhancement request - audio mixing
It's something that I would like too. Using two antennae on 2m there are frequently occasions where I would like to listen to the sub rx in both ears. For now, I achieve this with external switching. 73 Ian G0AFH On 11/11/2010 23:10, David Lankshear wrote: As Richard's message seems to have disappeared under a pile of other posts, I would add my voice on behalf of a friend who would dearly love to be able to listen to his 2nd rx in both ears. I would guess that it wouldn't be that hard to implement, judging from the other audio options that have been implemented in firmware. Love to have a 'yea', 'nay', 'maybe', 'on the list' or 'never' from Eric or Wayne. 73 DaveL G3TJP __ 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] K3 Intermod with IF NB
Hello, Primarily I use my K3 to drive transverters for the higher bands. I transvert to 2m from 20m using the transverter interface on the k3. Conditions on 2m have been enhanced in recent days so there a few big signals on the band. Last night I needed to use the NB to deal with some local power line noise. With the NB on there is far more intermod than I would have expected. Locally I have a beacon on 144.43 (s9+40). Station A on 144.32 (110KHz from the beacon) could also be heard on 144.210. Station B on 144.270 (160KHz from the beacon) could be heard on 144.110. Both stations were over s9. In both cases the spurious signals were around s4-5, distorted, but easily identifiable. Switching off the IF NB makes the spurious signals disappear. Perhaps I shouldn't be surprised, using the NB is never a good idea with strong signals around. 73 Ian. __ 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 Audio routing question
Hi Yes, for me it has a very real advantage. Most of the time the K3 is in 'diversity mode' although I am not strictly listening in diversity as my antennae are pointing in different directions. The advantage for me is that the receivers are locked together as well as they can be - including the filtering. I'll make up a switch box / balance control. I didn't expect this thread to grow quite the way it has! Thanks for the info. 73 Ian. W8JI Tom wrote: You are correct, that is not diversity mode but it has an advantage. We often do that on 160 meters, where my antennas have very deep wide-area nulls. We can lock one ear one direction and move the other ear to other directions to scan for signals. In this mode we often use different bandwidths and sometimes even have one channel USB and the other LSB on CW with the USB channel offset lower in frequency and the LSB channel offset higher. On SSB however it would obviously be same sideband and always same frequency, so I understand the utility in what you do. The one thing I dislike about the K3 is the location of volume controls while in that mode. I would prefer a fast balance or fader that is easy to grab to instantly fade one channel out. I think this is really what you are asking for. I have this feature on my antenna and audio selector panel. Easy to grab. Using dual audio gain controls is too cumbersome for this mode. http://www.w8ji.com/images/Shack/RX-ant-select.jpg 73 Tom - Original Message - From: g0afh g0...@g0afh.com To: d...@w3fpr.com; Elecraft@mailman.qth.net Sent: Tuesday, July 06, 2010 4:26 AM Subject: Re: [Elecraft] K3 Audio routing question Hi Don, Imagine a system with good isolation between antennae such as you can achieve with long yagi's at VHF/UHF. In my left ear I have the main RX with stations from the UK, in my right ear I have the sub RX and stations from Europe. I have a QRM from another G in my left ear when I am called by a weak station from Europe which I hear in my right ear. As the antennae have nice patterns I can barley hear the QRM from the G on the antenna pointing at Europe. Now I want to mute or attenuate the audio from the main RX and listen to the audio from the sub RX in both ears. I know this will not be diversity any more but I'd quite like the filter controls to continue to affect both receivers without having to press BSET. After I have worked the station I need to return to diversity mode listening to both receivers again. Diversity mode almost does what I want with both receivers locked together, I just need to be able to select which audio I listen to at a given time. I can easily make up a box to switch the audio but I would have thought that what I want to do is not that uncommon. Hope this makes more sense. 73 Ian G0AFH Don Wilhelm wrote: Diversity reception requires hearing both the main and the subRX, each with their own antenna. I do not understand why one would want to listen to only the subRX when doing diversity receive - it nullifies any benefit of diversity. Can you explain further, maybe there is something I am missing. 73, Don W3FPR The Smiths wrote: Lyle, As you know, this is NOT working in the Diversity mode as this person wants to use it. It is ONLY available with SUB mode at the time. Perhaps you can Stress to Wayne that he should finally make it available for use when in Diversity... __ 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
[Elecraft] K3 Disabling VOX on CW.
Hi I would like to disable VOX in CW mode so that when I touch the key the rig does not go into transmit. Is this possible? My primary use for the K3 is to drive transverters and I use manual tx/rx change over or a foot switch - even on cw. 73 Ian G0AFH. __ 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 Disabling VOX on CW.
__ 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 Disabling VOX on CW.
Hi Gary! Ok, the penny has dropped. That sounds exactly like what is happening here. I didn't notice the absence of RF but the PTT line is certainly being keyed even with VOX off. Once I've confirmed the absence of RF I'll sleep better! 73 Ian. On 07/07/2010 22:30, Gary Hinson wrote: On my K3, with the VOX set to off, the K3 still keys the PTT line out to my amp when I hit the paddle. It doesn't actually transmit any CW unless I hit the PTT footswitch, but it seems to key the PTT line for some odd reason. 73 Gary ZL2iFB PS Hi Ian! __ 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 Audio routing question
Hi Don, Imagine a system with good isolation between antennae such as you can achieve with long yagi's at VHF/UHF. In my left ear I have the main RX with stations from the UK, in my right ear I have the sub RX and stations from Europe. I have a QRM from another G in my left ear when I am called by a weak station from Europe which I hear in my right ear. As the antennae have nice patterns I can barley hear the QRM from the G on the antenna pointing at Europe. Now I want to mute or attenuate the audio from the main RX and listen to the audio from the sub RX in both ears. I know this will not be diversity any more but I'd quite like the filter controls to continue to affect both receivers without having to press BSET. After I have worked the station I need to return to diversity mode listening to both receivers again. Diversity mode almost does what I want with both receivers locked together, I just need to be able to select which audio I listen to at a given time. I can easily make up a box to switch the audio but I would have thought that what I want to do is not that uncommon. Hope this makes more sense. 73 Ian G0AFH Don Wilhelm wrote: Diversity reception requires hearing both the main and the subRX, each with their own antenna. I do not understand why one would want to listen to only the subRX when doing diversity receive - it nullifies any benefit of diversity. Can you explain further, maybe there is something I am missing. 73, Don W3FPR The Smiths wrote: Lyle, As you know, this is NOT working in the Diversity mode as this person wants to use it. It is ONLY available with SUB mode at the time. Perhaps you can Stress to Wayne that he should finally make it available for use when in Diversity... __ 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] K3 Audio routing question
Hi Is there a way to get the audio from the sub receiver into both ears without external switching? Here is why I want to do it. K3 in diversity mode so that frequency and filtering is locked together. Main RX on an antenna pointing in one direction. Sub RX on an antenna pointing in different direction. If I am called by a weak station on the Sub RX and I have QRM on the main RX I'd like to switch both ears across to the Sub RX to concentrate on the weak station.. As far as I can tell I can't do this in the K3. 73 Ian G0AFH __ 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 microphone input noise
Hi, My K3 last arrived last week and I have been getting to grips with it. However, I think I may have an issue with noise in the mic amp /adc. The headset I hoped to use is one that I have successfully used with my FT1000MP, a Sennheiser HMD25-1. This has a 200 ohm dynamic mic insert. With the K3 I find that I need to use the high gain setting and a relatively high mic gain level (30 -40) to get anywhere near the required 4-5 bars of ALC. With that much gain I hear more noise than I would expect to. The noise is mostly white but has a distinct whine which I estimate to be at around 1500Hz. The situation is the same using the front or rear mic sockets. I have also tried a number of other headsets. A Bayer DT190 with a 200 ohm dynamic mic insert gives similar results to the HMD25-1. A Sennheiser HME25-1 which has an electret mic insert is a little better (probably because it has a higher output level) although still requires fairly high gain. The best results so far have been with a low cost computer headset or a £1.00 electret mic capsule. With both of these I was able to use the low gain setting and a mic gain less than 20. So, some questions... What sort of gain level should I expect to use for a dynamic mic? Are other K3 mic amps as noisy as the one I have, if not then where should I start looking for the noise issues? Does anyone else hear the tone in the noise with the mic gain turned up? 73 Ian. __ 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 and Javornik II transverter
Hi Dominik, Thanks. I already have the Javornik which is currently used with my Ft1000MP. Just thinking about an upgrade... 73 Ian Dominik Bugmann wrote: Hi Ian, Yes, HB9AJ is using Javornik on 144MHz together with a K3. No issues at all. IF is 14MHz and we use 4x 7el vertically stacked and/or 4x 11el in H formation. Unfortunately Javornik is sold out ... (at least that's the info I heard last year). 73 de Dominik, HB9CZF Hi, Is anyone here running a Javornik II 2m transverter with their K3? just wondering how well the two perform together. 73 Ian G0AFH __ 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 and Javornik II transverter
Hi Jeff Thanks. I already have the Javornik. Out of interest, can you split the TX/RX paths on the K144XV? I need to add a couple of filters in the receive line to keep some fairly big local signals out. 73 Ian Jeff Cochrane - VK4BOF wrote: - Original Message - *From:* G0AFH mailto:g0...@g0afh.com *To:* elecraft@mailman.qth.net mailto:elecraft@mailman.qth.net *Sent:* Thursday, June 10, 2010 3:21 PM *Subject:* [Elecraft] K3 and Javornik II transverter Hi, Is anyone here running a Javornik II 2m transverter with their K3? just wondering how well the two perform together. 73 Ian G0AFH G'day Ian, I don't know about the Javornik transverter but the Elecraft K144XV internal transverter is fantastic. I am hearing signals now that my old FT847 could never hear due to its front end being as wide as a barn door and it getting nailed by Plasma TV's. The K144XV works for me! :) Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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 and Javornik II transverter
Hi Dave Thanks for the info. That should all be fine. On the K144XV can the TX and RX be split at 144MHz? That is where I need to add the extra filtering. I presume that the second RX is still available as a separate input when using the transverter interface? The Javornik transverter has two receive converters. 73 Ian. Dave Zeph wrote: Jeff I've used both a XV50 and a XV144 with my K3. The K3 and the XV Transverters work hand-in-glove. The POWER OUTPUT of the K3 can be controlled incrementally to between 200 mW –100 W. The Power Output of the Transverter XMIT Output can be varied between .01mW to 1mW The K3's (KXV3 Module) TRANSVERTER Input Output are SPLIT - and Power Level is selected via CONFIG Menu item. XVx PWR H 0.1 Allows fixed or variable power level for XVTR band x. Tap 1 – 9 to select xvtr band. H x.x (High power level) specifies a value in watts, and use of the main antenna jack(s). This should be used with caution, as you could damage a transverter left connected to these antenna jacks accidentally. L x.x (Low power level) species a value in milliwatts, which requires the KXV3 option *Using Transverters* Nine user-definable bands are provided for use with transverters. Once enabled individually, these bands will appear in the band rotation following 6 meters. You can use Elecraft XV-Series transverters and most other transverter types with the K3. *Transverter Band Setup* Transverter bands are set up using the XV menu entries. In all cases, tap 1 – 9 within the menu entry to select a transverter band to configure. · XVn ON must be set to YES to enable transverter band n. · XVn RF selects the transverter operating frequency in MHz. · XVn IF specifies a K3 band to use as the transverter I.F. (7, 14, 21, 28, or 50 MHz). · XVn PWR sets the K3 power output range to be used with this transverter band. L0.01-L1.27 specifies a power level in milliwatts, which requires the KXV3 option (use the XVTR IN and OUT jacks). H00.0-H12.0 specifies power in watts, and selects the K3’s main antenna jack(s) for output. · XVn OFS is used to compensate for any frequency offset in the transverter’s oscillator/multiplier chain. The value shown is in kHz. · XVn ADR specifies an Elecraft XV-Series transverter selection address (see Transverter manual). Further details on these menu entries can be found in the CONFIG menu listings. For information on transverter control connections and band data, see pg. 19. CAUTION: We recommend the use of milliwatt-level drive with transverters (via the XVTR IN and OUT jacks). If you use the K3’s main antenna jack(s), you could accidentally transmit into a transverter at high power. 73 Ú Dave, W9ZRX -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of g0afh Sent: Thursday, 10 June, 2010 03:24 To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 and Javornik II transverter Hi Jeff Thanks. I already have the Javornik. Out of interest, can you split the TX/RX paths on the K144XV? I need to add a couple of filters in the receive line to keep some fairly big local signals out. 73 Ian Jeff Cochrane - VK4BOF wrote: - Original Message - *From:* G0AFH mailto:g0...@g0afh.com *To:* elecraft@mailman.qth.net mailto:elecraft@mailman.qth.net *Sent:* Thursday, June 10, 2010 3:21 PM *Subject:* [Elecraft] K3 and Javornik II transverter Hi, Is anyone here running a Javornik II 2m transverter with their K3? just wondering how well the two perform together. 73 Ian G0AFH G'day Ian, I don't know about the Javornik transverter but the Elecraft K144XV internal transverter is fantastic. I am hearing signals now that my old FT847 could never hear due to its front end being as wide as a barn door and it getting nailed by Plasma TV's. The K144XV works for me! :) Jeff Cochrane VK4BOF Innisfail QLD Australia Elecraft K3 #4257 __ 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 and Javornik II transverter
Hi Dave, Thanks. I think I may have created some confusion here too! My transverter has two receive converters, i.e two 144MHz antenna inputs and two separate 14MHz IF ports. In normal operation I want to run with one receive converter on the K3 main RX, and the other on the K3 sub. With two antenna arrays I can have one ear on the UK, the other on Europe. I can do this now with my modified FT1000MP but the 1000 lacks some of the niceties that the K3 has like being able to synchronously tune both receivers. I think that this should be possible with the K3 as it's just like operating it on 20m using diversity reception and transmitting at a few mW. 73 Ian Dave Zeph wrote: Hi Ian yes, the K3 has low-output-power, and separate Input and Output. The XV144 has matching, separate Input and Output. The XV144 can be assembled with EITHER a combined single input/output or separate Input and Output. That is an assembly option. Now as to using the K3's optional 2nd Receiver, KRX3 - a description of when is possible there is more complex! I'll try to give you can example: K3 MAIN Operating at 50Mhz, with XV-144 used with the KRX3. Yes it is possible to listen at once on the two bands I indentified, but The but is the switching that is involved. This really takes some understanding of the antenna switching within the K3. And it helps to understand the switching action that can or must concur when switching from MAIN on 50, XV144 On Auxiliary Input – to the opposite with Main on 144 and 50Mhz being on the Auxiliary, Perhaps some discussion of the role of the K3ATU, the KVV3, and the KRX3 is in order. Here’s a diagram from the rear of the K3 Manual that will either clarify the points – or will drive you crazy – and I’m not so sure I can describe how it works. I haven’t done it for a year!! Here you see all the front-end antenna switching. When the MAIN is on 50Mhz, and the SUB on 144Mhz, the MAIN gets its I/I via K2 and K3. The SUB, which is the 144Mhz signal is feeding the separate low-level Receiver XVERTER jacks. Remember that ONLY the MAIN can transmit. Let’s say you wish to make 144Mhz the MAIN BAND. RF Drive to the XV144 is hardwired – but wait – the XVERTER Receive signal has no path to back to the MAIN Receiver. This can be accomplished by using a BNC-T at the XVWERTER INPUT. The XV144 Receive Output cable normally connects to the XVERTER INPUT *and a BNC Jumper Cable connects to the RX ANT *which has a path to the MAIN Receiver Input. The 50Mhz can be placed on the 2^nd Receiver – but will not be able to transmit because the MAIN is actually operating on 28mHz to drive the Transverter. I well remember discussing it with Wayne (he’s the one that suggested a way to deal with the issue), *Unfortunately I haven’t used it since last year * The are several switching steps necessary to switch from XVERTER on 2^nd Receiver to XVERTER on MAIN, The “patch cable” is the only way to get the Transverter’s receive output to the MAIN. Frankly I was leery of answering this because of doing it only in one contest and that was a year ago. I’ve never pondered trying to use multiple XVERTERS where the MAIN always stays on 28mHz. All of this switching is a result of their being multiple inputs that allow use of the 2^nd Receiver when the MAIN is being use for the Primary.- and any subsequent desire to REVERSE the two “bands”. Those who have purchased the internal 144mHz Module say it works fine – but it’s not obvious if it solves any of these problems. I think Elecraft could do a better job of explaining this and possibly simplify the switching. Last time I darn near had to write down the steps to Reverse 6M and 2M between MAIN and SUB so that I could transmit on the desired Band. It certainly isn’t like having a 6M and a 2Mrig sitting next to each other when you can send on either and receive on either!!! I fear I’ve just added to your confusion! 73 Ú Dave, W9ZRX -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of g0afh Sent: Thursday, 10 June, 2010 06:21 To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 and Javornik II transverter Hi Dave Thanks for the info. That should all be fine. On the K144XV can the TX and RX be split at 144MHz? That is where I need to add the extra filtering. I presume that the second RX is still available as a separate input when using the transverter interface? The Javornik transverter has two receive converters. 73 Ian. Dave Zeph wrote: Jeff I've used both a XV50 and a XV144 with my K3. The K3 and the XV Transverters work hand-in-glove. The POWER OUTPUT of the K3 can be controlled incrementally to between 200 mW –100 W. The Power Output of the Transverter XMIT Output can be varied between .01mW to 1mW The K3's (KXV3 Module) TRANSVERTER Input
[Elecraft] K3 and Javornik II transverter
Hi, Is anyone here running a Javornik II 2m transverter with their K3? just wondering how well the two perform together. 73 Ian G0AFH __ 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 and Javornik II transverter
Hi, Is anyone here running a Javornik II 2m transverter with their K3? just wondering how well the two perform together. 73 Ian G0AFH __ 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] Can main and sub rx frequency be locked together?
Hello I am looking at building a K3 to use as the IF for my 2m system. At present I have a modified FT1000MP with the sub rx brought out to a separate connector. This allows me to listen to the main antenna in one ear and a second antenna (usually mounted at 90 degrees to the main antenna) in the other ear. With the FT1000 the only way to make the two receivers track is to hold the lock button whilst tuning the main VFO which requires two hands. Can the main and sub receivers on the K3 be made to track each other, i.e tune both receivers from one VFO? 73 Ian. G0AFH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
