Re: [Elecraft] Upgrading K3

Wouldn't the new subrx also have to have the extra preamp to match the one in the KXV3B? 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ On 24 Jun 2017 02:54, Don Wilhelm wrote: I believe it has to do with reducing low frequency noise on the 8 volt line. The

Re: [Elecraft] ATU and Bandpass Filter

If one chooses to use band pass filters then one should anticipate using an external antenna tuner as well. This of course depends largely on the antenna and the impedance of the antenna at a given frequency.If one is using resonant antennas with a reasonably close 50 ohm impedance then

Re: [Elecraft] ATU and Bandpass Filter

Hi Don, The technique you use with monoband horizontal dipoles and bandpass filters is exactly what we do at the W3AO Field Day site, except we use monoband Yagis rather than dipoles on 40, 20, 15 and 10 meters. (we also use dipoles on 40M). The recent recommendation in the Elecraft

Re: [Elecraft] ATU and Bandpass Filter

Lane, Yes, you cannot do that. We are only discussing the need for the filter to have a 50 ohm non-reactive load. So if you are using a bandpass filter designed for a 50 ohm load (most are), then you need to use resonant antennas. What I was saying is that slight variations from a 50 ohm

Re: [Elecraft] ATU and Bandpass Filter

I think I'm missing something here. I'm not sure I understand putting the ATU after the filter since the ATU is internal. How does one put it after the external BP filter? On Fri, Jun 23, 2017 at 7:03 PM, Don Wilhelm wrote: > What Matt said is true. However, if your

Re: [Elecraft] ATU and Bandpass Filter

What Matt said is true. However, if your antennas are close to resonance, go ahead and use the ATU to "touch up" the tuning. If you are trying to use a multiband antenna such as a G5RV and such, you might as well forget the advantage of the bandpass filter. Our local club discovered that

[Elecraft] K3 memory editor

I just started using the K3 memory editor (v1.5.7.20 dated 2015) for the first time and I find it behaves in a strange way, depending whether a memory has content or not. At present I have general memories 0 thru 23 loaded with data and memories 85 thru 99 also loaded. All other memories are

Re: [Elecraft] Upgrading K3

I believe it has to do with reducing low frequency noise on the 8 volt line. The addition of the capacitor was mentioned by Eric at the FDIM when the K3S was introduced. The new synthesizers made that lower frequency operation possible, and I assume that during testing, the noise was

Re: [Elecraft] For Sale - KX2 Carry Case CS-60

SOLD -- View this message in context: http://elecraft.365791.n2.nabble.com/For-Sale-KX2-Carry-Case-CS-60-tp7632030p7632040.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home:

Re: [Elecraft] Upgrading K3

OK Don, I'll bite: What does a "220uF Solid Polymer Electrolytic Capacitor on the output of the 8 volt regulator" have to do with an "extension of the K3 tuning range to 100 KHz?" Voltage regulators are usually found at the far end of the circuit from frequency determining components.

Re: [Elecraft] Upgrading K3

Mike, The KRX3A includes the 220uF Solid Polymer Electrolytic Capacitor on the output of the 8 volt regulator. As far as I know, there is no other difference. This capacitor allows extension of the K3 tuning range (with the modified KBPF3 option) to 100kHz. See

Re: [Elecraft] Upgrading K3

An interesting question is just what is the difference between the KRX3 and the KRX3A. Regards, Mike VP8NO On 23/06/2017 17:57, Gmail - George wrote: The above assumes the new sub-receiver will operate with the old style synthesizer!

Re: [Elecraft] Upgrading K3

Christopher, Many of us who have upgraded have extra old style synthesizers with no plans for them. If the cost of upgrading your main synthesizer is stopping you from getting a sub-receiver, I and many others would be glad to loan or give you an old style one. In the long run a sub-receive

Re: [Elecraft] Upgrading K3

Chris - The new sub receiver comes with the new synthesizer, so you will only need to replace the one in your main receiver, if you have not already done that. The synthesizers must both be the same. 73 de Dave - K9FN On Fri, Jun 23, 2017 at 4:08 PM, Matthew George

Re: [Elecraft] 6 meters open this morning; listening 50.095 (CW)

Leroy and all, Guess this opinion is from those who only work HF with a random wire dropped over the tree in the backyard. Sure many tuners can load it and you can make some contacts, but it would not compare well with a "real yagi" designed for the frequency (which usually means its

Re: [Elecraft] K3S Noise reduction Test

I too would like the NR to use the A & B knobs and even greater options with the B knob. I think I would find it much easier to select the right settings on the fly. Maybe user selectable in the next or upcoming K3/K3s update? 73, Gary KA1J

Re: [Elecraft] Upgrading K3

I assume you mean sub receiver? If so, yes you will need two of the new synthesizers. It's all in the FAQ from 2015 located here on the elecraft website: http://www.elecraft.com/manual/KSYN3A%20FAQ-ver-C-2.pdf Well worth the upgrade by the way! Mg NG7M -- Matthew George 801-560-8754 > On

[Elecraft] Upgrading K3

Hi I am looking to upgrade my K3 with a sun receiver, to do this am I correct in assuming that the new part will come as per K3S spec? if this is the case do I then have too upgrade the existing with the new K3S synthesiser card also? What else do I then need? regards G0TZZ

[Elecraft] For Sale - KX2 Carry Case CS-60

I have a CS-60 which is the large carry case for the KX2. It's never been used other than to test the fit. $30 shipped Conus. Paypal preferred 73 Tex ka5y -- View this message in context: http://elecraft.365791.n2.nabble.com/For-Sale-KX2-Carry-Case-CS-60-tp7632030.html Sent from the Elecraft

Re: [Elecraft] OT: Article on Web pertaining to Telecommunications.

So much for "Nothing new under the sun". ;) This news could be huge for the future. Fundamental research scores yet again. Carl Sagan once said that your cannot tell beforehand where advances in research will take you. (As in solid state electronics, lasers, etc). 73 de Ray K2ULR KX3

[Elecraft] K3 6M power out

Is it normal for the 6M output to be about 10 watts less than indicated (i.e. 90w for 100w setting). If I do the 50w wattmeter cal on 20 M all bands but 6 are pretty much right on. Conversely if I cal on 6 then all the lower bands are (not surprisingly) 10 watts high. Mark. N2QT

[Elecraft] Elecraft KX2 Spinner Knob

You may want to look into this more. Shaft design may not be able to support such a knob cause of what bearings type it is. May cause damage that you may not want on your KX2. Jim K9TF __ Elecraft mailing list Home:

[Elecraft] OT: Article on Web pertaining to Telecommunications.

Maybe you saw this. They say the applications are near infinite. Phys.org: A 100-year-old physics problem has been solved. http://google.com/newsstand/s/CBIwq7GPnjU Rich, n0ce __ Elecraft mailing list Home:

[Elecraft] KX2 and Omnirig ...

Has anybody had any experience with coming up with an omnirig ini file for the KX2 ? Failing that, any pointers to how to come up with a new file ? I've read the Afreet readme files, but am still no wiser as to how to go about this. Thanks !! John N6RCD

Re: [Elecraft] K3S USB audio output needs to be adjustable in Menu

There is a Lin Out setting in menu. Sent from my iPhone ...nr4c. bill > On Jun 22, 2017, at 1:31 PM, Dick via Elecraft > wrote: > > Hello Elecraft, > > When feeding the audio from the K3S USB port to the CPU, the K3S audio > level is extremely high and way too

[Elecraft] K3S/100 - Add a KPA500/KAT500?

I figure when that KPA1500 comes out there will be a few KPA500/KAT500 units up for sale ;-) I'm thinking to add a used set to my K3S/100 and would like advice on adapting my system. At present, my remote ATUs are only rated to 100W (LDG RC/RT100 at base of G5RV) and 200W (MFJ-927), so I'll need

Re: [Elecraft] 6 meters open this morning; listening 50.095 (CW)

I think a lot of that comes from the fact that the average active 6M station runs a modest beam & 100 W. So, any less than that average is at a disadvantage. Obviously some run yuge beams and legal limit. Those station get through 1st, followed by the average stations and finally the rest. 6M

Re: [Elecraft] ATU and Bandpass Filter

The problem is that the filter is designed to work with a 50 ohm characteristic impedance (ie. with a 1:1 VSWR). This means you need to put ATU *after* the filter, not before, otherwise the filter will not work properly. 73 de Matt VK2RQ > On 23 Jun 2017, at 1:13 pm, Lane