Re: [Elecraft] Transverter calibration
Alan, I have the same issue; mine is off about 50Hz. Not a huge deal but just enough to be annoying on VHF SSB and CW. I do have the REFLOCK, EXTREF (10MHz GPSDO) and KTCXO-1; nothing left to add. You are correct that you can’t adjust the offset once you’re in this configuration. As I say, for me its “only” about 50Hz but its consistent. I was gonna have to Elecraft team look at it in their lab the next time I send the rig in (if I send it in). Aside from that I’m living with the 50Hz delta. Joe W1GO > On Jun 21, 2018, at 6:35 PM, G4GNX wrote: > > I built a K3S a few months ago and I've installed the K144XV 2 metre > transverter into it, along with the K144XV Ref lock option. > > Although all of the main K3S calibration is OK, I find that the K144XV is > about 200Hz off nominal frequency, certainly in the 144-146 MHz segment. > > The manuals mention calibration being automatic, so I can't find any > reference to adjustment where the frequency is incorrect. > > Anyone any ideas how I can get the transverter on frequency across the band? > > > 73, > > Alan. G4GNX > > __ > 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 w...@icloud.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Microphone in 12 Watts
German, Use the power control to the right of it. That is, once you have set up the gain, AGC, etc. for the mic. It is in the manual, but if you don't have a copy, download from Elecraft site. 73, Bill K9YEQ https://wrj-tech.com/ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of German Duran Sent: Saturday, June 23, 2018 5:11 PM To: Elecraft Reflector Subject: [Elecraft] Microphone in 12 Watts Dear friends: When I did resetting of my Elecraft K3s, the microphone is fixed at 12 W. How do I make the microphone increase the power? Thank you. Germán HK3J __ 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 k9...@live.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 Message delivered to arch...@mail-archive.com
[Elecraft] Microphone in 12 Watts
Dear friends: When I did resetting of my Elecraft K3s, the microphone is fixed at 12 W. How do I make the microphone increase the power? Thank you. Germán HK3J __ 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
[Elecraft] OT: FS: LNR Precision MTR5B
The MTR5b has been sold. 73, Jim, W0EB __ 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
[Elecraft] OT: FS LNR Precision MTR5B Mountaintopper
At age 76, I don't get out to portable locations any more and this is totally surplus to my needs. I bought this MTR5B "MountainTopper" new from LNR Precision ($400) a couple years ago. Used it when I went to visit my sisters & neices in Florida and Louisiana with excellent results. I did add the optional tuning encoder (I grew up turning knobs for tuning rather than Up/Down button pushing). Also included in the package will be an MFJ 9201 "QRPocket Tuner" which will actually handle 100 watts when tuned at lower power. Original power cable with added "Deans Connector" + matching Deans female as well as a package of spare power connectors to fit the MTR5B. Main power cable has 2 series Schottky diodes in series with the + side to drop a 13.8V power supply to just under 12 V which is the stated max input voltage for the MTR5B. Rig puts out just under 5 watts on 11.9 volts and cosmetically it's a 9 out of 10. It has some scratches around one sides mounting screw hole that happened when I drilled the hole for the encoder. The good news is, Ihave a brand new case for it, still in the box which will be included. The manual is downloadable from LNR Precision's website but I have the original one which has the schematic in it. The one on LNR's website is very abbreviated. A printed copy of the original will be included. Asking $325 Shipped in the US for everything. Anyone interested please contact me off list, (w...@cox.net) for pictures, to say "I'll Take It" or for further information. Payment by USPS Money Order or Pay Pal would be preferred. Jim Sheldon, W0EB w...@cox.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Transverter calibration
Alan Does your k3 have the KTCXO3-1 upgraded reference oscillator or the original KREF3 oscillator? The KTCXO3-1 is recommended by Elecraft when locking I had a similar issue to you on my 1st K144XV installation locking it with the KREF3, as it was outside the range of the software offset calculator/corrector. When I did the upgrade the problem was solved Dave G4FRE Message: 2 Date: Fri, 22 Jun 2018 20:22:46 +0100 From: "G4GNX" To: "Elecraft Reflector" Subject: Re: [Elecraft] Transverter calibration Message-ID: Content-Type: text/plain; format=flowed; charset="utf-8"; reply-type=response Hi Don. I just got back from 'experimenting'! I turned the Reflock off and manually set the offsets according to the figures on the Xverter top. With the Reflock still turned off, the discrepancy is several KHz (I did not note the exact figures). With the Reflock turned back on, the discrepancy is back to around 200 Hz and there's no way to manually adjust that in software. I wonder if the K144XV itself is a tad off? I bought it from another amateur so I don't know its 'tweak' history, other than I have never adjusted any of it internally. 73, Alan. G4GNX __ 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] KPA-1500 ATU not working well
I'm not clear whether you are talking about the SWR before or after the tuner, but efficiency is determined by the load seen by the PA, which has two degrees of freedom (reactance and resistance), both of which can vary either side of the ideal. SWR reduces this to a single variable, that doesn't even respect the sign of the deviation from the ideal load. That means that efficiency may even be better than the nominal efficiency at a particular SWR, whereas that same SWR can also produce a lowered efficiency. (Similarly, an SWR may destroy a PA or be safe, depending on the fine details.) In particular, a higher load resistance may result in a higher efficiency, at the expense of a lower maximum output. There is actually a K2 build option, that winds the output transformer to impose a higher load resistance, in order give better efficiencies at low powers. Tuning across the band will change at least the reactance component of the load on the PA. Also, if input SWR isn't 1:1, I think you will find that the measured forward power doesn't reflect what is actually available to go out through the antenna. Whilst some of it will circulate back and forth and eventually make its way out in the right direction, some will also get absorbed by the PA. On 22/06/18 20:36, Paul Baldock wrote: I have found that if the KPA1500 is feeding a largish SWR (like 1.5:1 as you suggest) then the drive power required to maintain a constant output will vary significantly as you tune across a band. This means you have to keep adjusting the power control within a single band. This appears not to occur if the SWR is 1.1:1 or better. I don't know, but I would guess a solid state untuned amplifier efficiency is better into a 1:1 SWR than a 1:5:1. This could lead to the dreaded more fan noise. __ 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] [K3] Add to NTCH and APF
write a macro?? Bill W2BLC K-Line __ 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] [K3] Add to NTCH and APF
Hi Petr, Have you tried Save and then Restore Config in the K3 Utility? I know this is somewhat inconvenient but it might work (don't know if it will but worth a try). 73, Bill W4ZV -- Sent from: http://elecraft.365791.n2.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 Message delivered to arch...@mail-archive.com
