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 & 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 > ______________________________________________________________ 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
