Re: [Elecraft] Elecraft] KX2

80.  KAT3 will match it on 160, haven't tried to make any Q's there yet. Works great everywhere else considering it's strung on the 6' fence. Fred K6DGWTDY in Socal (softball) Sent from my Verizon 4G LTE smartphone Original message From: Jim Brown

Re: [Elecraft] Bioenno Battery Charger

Hi Jeff! Nice to see you on the Elecraft board. I have one question about the Turnigy Accucel 6 Balance Charger. I note that it can charge LiPos. Does it have the standard modular connector for LiPo batteries? This is usually located on the side of most LiPo chargers that I'm aware of. I

[Elecraft] [K2] AGC Time Constant

I'm looking at the K2 schematic at the components on the Control Board that set the AGC time constant, and I can't understand how the fast setting gets its time constant... the parts involved, C4 and R2, appear to have a very long time, much longer than necessary for the FST settting. If you

Re: [Elecraft] KX2

But Morgan, how many KX2s will fit inside your roller inductor? Seems a bit of an overkill for QRP ops :-) 73, Phil W7OX On 7/14/16 8:34 PM, Morgan Bailey wrote: A few years ago I built a parallel LC network from a roller inductor and a variable cap rated for approximately 2.5kv and have

Re: [Elecraft] Elecraft] KX2

On Thu,7/14/2016 2:54 PM, Fred C. Jensen wrote: I use an EFHW on 80-10, no dedicated counterpoise, no coax length rqmts. On what frequency is it a halfwave? :) 73, Jim __ Elecraft mailing list Home:

Re: [Elecraft] KX2

A few years ago I built a parallel LC network from a roller inductor and a variable cap rated for approximately 2.5kv and have used it to match 20 meter EFHW many times. I run 500 watts into it from the kpa500 through a choke balun in the shack. I use (5) 8 foot radials for a counterpoise and I

Re: [Elecraft] KX2

Keep in mind that the original End Fed Half Wave antenna was the original Zepp antenna. A halfwave radiator that was fed from one side of a quarter wave transmission line. That antenna was trailed from a Zeppelin airship. The 1/4 wave transmission line reduced the high impedance of the

Re: [Elecraft] KX2

Dave, Most of the commercial end fed halfwave antennas are designed for low power (100 watts and under). So the use of the coax shield as the counterpoise element is not a big problem in most cases. Add to that, the EFHW is an easy solution for portable operation - an easy up effective

Re: [Elecraft] KX2

I totally agree. End-fed half waves are tweaky. One terminal is the antenna wire and the other terminal must be something. The RF will find something to drive as the other “pole” of the antenna. There are no monopole antennas. It could be the outside of the coax, it could be a “counterpoise”

Re: [Elecraft] KX2

Yup ... that all makes sense. The counterpoise as described by that link is at the antenna where it should be, and it compensates for the fact that the network can't produce an infinitely high impedance feed. I stand corrected. Using the coax for a "counterpoise" is a really bad idea,

Re: [Elecraft] KX2

OK, I can buy that ... except that the term "ground reference" as used by you and Don doesn't really apply. The counterpoise is simply providing some minimal balance to the high impedance at the end of the EFHW, and it doesn't need to have anything to do with "ground". If the counterpoise

Re: [Elecraft] KX2

Dave, All that is theoretical does not translate directly to the physical world. Take a look at http://www.aa5tb.com/efha.html for more information. The counterpoise does not need to be very long, but it does need to be present. If the coupling between the high impedance side of the matching

Re: [Elecraft] Upgrading K3 --- order of installation

Brian, I just added the KIO3B, KXV3B, and KBPF3A mods. As per W3FPR, Don's advise, I did the KXV3B first, then the KIO3B, then the KBPF3A. I don't have the KAT3A, but I do have a K3/100, with ATU, internal 2 mtr xvtr, and the 2nd receiver. Had to take off top cover, remove 2 mtr xvtr, 2nd rcvr,

Re: [Elecraft] Upgrading K3 --- order of installation

Brian, Those are in physically different areas of the K3, so I don't think the order is significant. If you have the KRX3 installed, I would suggest adding the KBPF3A first (don't forget the added capacitor to the regulator output), and then leave the KRX3 assembly out until you have

Re: [Elecraft] KX2

The transmitter needs to drive into two terminals. That is how electricity works. If you do not provide a ground or a capacitive RF ground (counterpoise), the ground is the chassis of the transmitter. In a big grounded shack, that might be a stable reference. Otherwise, you need to provide a

[Elecraft] KX2 Bag Option

My KX2 arrived today. :-) I quickly put my Gemsproducts side plates on so that the knobs and shiny new bezel would stay retain that new-radio-luster. With the plates on, I was pleased to see that it easily fit into a molle water bottle pouch with enough additional room for the mike and coiled

Re: [Elecraft] Elecraft] KX2

I use an EFHW on 80-10, no dedicated counterpoise, no coax length rqmts. However, NEC2 doesn't like a source at the open end of a wire so to model it, I have to put some counterpoise on the wire. Length not critical, 5-10 ft is fine. 73, Fred K6DGW David Gilbert

[Elecraft] Bioenno Battery Charger

Hi Dave, There’s really no advantage unless you’re looking to have more control over battery maintenance. My personal preference is to have a maximum amount of control over the maintenance of my batteries. This means charge monitoring *with digital readout from the charger) that’s

Re: [Elecraft] KX2

I'm confused why an EFHW should need a counterpoise. If it needs a counterpoise it isn't actually acting like an EFHW. If it needs a counterpoise that means there isn't enough choking impedance at the feedpoint, and it means that the feedline is radiating with the counterpoise acting as

Re: [Elecraft] P3 with K2?

Hi Tom Looking forward to hearing about your results! Tom Azlin W7SUA wrote > Good question. I ordered one and will find out when I try to put it in. > I could find no instructions but have not written back to see if they > have any. > > 73, tom w7sua 73 - Sverre, LA3ZA K2 #2198, K3

[Elecraft] K3: PigKnob not needed - got a K-pod

If anyone is interested in buying my PigKnob - contact me off list. Bill W2BLC K-Line __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] PX3 BETA 1.45 firmware now available

I am unable to recall any of the saved message memories . F key and Alt Fkey do nothing CTLFkey and ShiftFkey send me to boot screen. Reloaded last version and working as before. -- View this message in context:

Re: [Elecraft] Upgrading K3 --- order of installation

They're kind of spread out so I don't thinking makes much difference. Download the various assembly manuals and see if there are two or more that need common panels/parts unassembled and do those at the same time. Sent from my iPhone ...nr4c. bill > On Jul 14, 2016, at 4:10 PM, Brian F

[Elecraft] Upgrading K3 --- order of installation

When the K3S first came out, I ordered the new synthesizer boards for my K3, and they installed easily and worked great. I also ordered the KXV3B, KAT3A and the KBPF3A. I am just now getting ready to install these. Does anybody have advice on the best order to install them? Or any

Re: [Elecraft] KX2

Andy, What happens if you connect to a dummy load? Does the KX2 tune it properly? If so, then you know the KX2 is operating into a 50 ohm load OK. Do you have an antenna analyzer? If so, then connect it to the antenna feedline and look at the impedance - both real and reactive - as well as

Re: [Elecraft] K3 - MMTTY interface for FSK

W4TV and W3FPR got me down the right path. I forgot that it is a pulse on RS232 pin1. Got the scope out and it is fine. Thanks Don. Got to get me one of those small, lightweight scopes. I had both transistors in the RS232 shell (FSK keying and PTT) and when I opened the shell it looked like I

Re: [Elecraft] KX2

Do you have a “counterpoise” wire? An EFHW can be very sensitive to nearby objects without that. Another approach is to use an end-fed non-resonant wire. Just yesterday with my KX3, I was using a 26 foot wire thrown in a tree and a 16 foot wire laid on the ground. An end-fed half wave has a

Re: [Elecraft] KX2

Andy, Is your KX2 receiving or is the problem just with TX? It sounds like you replaced the end panels with the 3rd party option. Did you try the KX2 before doing that? 73, Phil W7OX On 7/14/16 11:40 AM, Andy Clift wrote: Just received my KX2, but unable to get it to tune an EFHW wire.

[Elecraft] KX2

Just received my KX2, but unable to get it to tune an EFHW wire. I’ve tried a home made one and then tried a SOTABEAMS MultiBander that I’ve used successfully with an FT-857. I’ve checked the continuity in the wire and also the continuity in the KX2 between the BNC connector and where the wire

Re: [Elecraft] PX3 BETA 1.45 firmware now available

> There is a known bug with the macro import feature. As a work around, > after the macros > have been exported to a file, you will need to rename the file > "px3macro.txt" to "macros.txt" . This is what's referred to as an "undocumented feature". This feature allows the user to save /

Re: [Elecraft] PX3 BETA 1.45 firmware now available

There is a known bug with the macro import feature. As a work around, after the macros have been exported to a file, you will need to rename the file "px3macro.txt" to "macros.txt" . Also, the PX3 does not support flash drives that have been formatted using NTFS, you must use FAT or FAT32.

Re: [Elecraft] OT - 6m antenna

I have a 10M vertical made of 1/2" copper water pipe with a ground plane of aluminum window screen. It works reasonably well. One piece of advice is to sweat or otherwise ensure good contact in all joints that should be connected in the antenna. Ask me how I know. :-) 73 Bill AE6JV On

Re: [Elecraft] K3 - MMTTY interface for FSK

All along I have been using COM 1 on my PC for FSK keying. I have been using pin 3 to Pin 1 on the Acc K3 socket. I have not used Pin 7 (PTT) to Pin 4 on the K3. I trust you have been using an NPN transistor between the RS-232 output (+/- 9V) of the serial port and the TTL input (0 to +5V) of

Re: [Elecraft] K3 - MMTTY interface for FSK

Tony, If the com port pin stays at -9volts, then the COM port is not "doing its thing". I trust you used a 'scope to look measure it. A DMM will not likely respond quickly enough to see the positive going pulses. Try another COM port. 73, Don W3FPR On 7/14/2016 10:45 AM, N2TK, Tony wrote:

[Elecraft] K3 - MMTTY interface for FSK

I am having brain freeze. I must have changed something but not sure what. Both K3's had been working fine on FSK using MMTTY for years. I can still receive fine, but I can't transmit on either. I am using LP Bridge which is talking fine to either K3. When I hit Xmit in MMTTY the program shows

Re: [Elecraft] Another KX3 vs K3S Query...

Ah. I suppose Elecraft might cover issues beyond a year for original owners, for for a used unit, you pay the rate/parts. What was your experience, if you don't mind me asking. Best regards, Bret aka Charles Jessee KC1CJN -- Original Message -- From: Elecraft mailing list [via Elecraft]

Re: [Elecraft] Another KX3 vs K3S Query...

I've been monitoring this list for similar threads now for a bit now as my situation is close to Maverick's. I love my K2, but after having played with some online sets via WebSDR.org and learning some basics on using a panadapter has only piqued my interest to getting a newer set. Data modes

Re: [Elecraft] Another KX3 vs K3S Query...

> On Jul 14, 2016, at 7:17 AM, MaverickNH wrote: > > The used K3/P3 option is attractive, but I miss out on the "Next Generation" > hardware and add some risk for used equipment. Past the 1 year warranty, I'm > only trusting the owner that "as is" is fully functional. >

Re: [Elecraft] Another KX3 vs K3S Query...

Hi Joel, For pain point #1: I set up two macros accessible via the same PF key on the KX3. The last couple of macro commands setup a toggle on each macro line. Makes switching between SSB and Digital very easy/fast with the press of one button. I offer the two macros for your consideration.

Re: [Elecraft] Another KX3 vs K3S Query...

Let me add a little to the fray then. Up to recently, I had both the K3/P3 combo *and* a KX3. I sold the K3/P3 and added a PX3 to the KX3. I am looking to add the KXPA100 sooner or later. My K3 had a lot of options: 100 W amp 2nd receiver BPF on the 1st receiver 500 Hz CW filters in both

Re: [Elecraft] Another KX3 vs K3S Query...

Summarizing some great offline feedback I'm getting, I can see a few options emerging: 1. Get a loaded K3S/P3 2. Get a loaded KX3/PX3/KXPA100 system 3. Get a loaded/used K3/P3, which "beats" a KX3 system used for a base, at about the cost of a KX3 system 4. Get a "limited" K3S/P3 system, which is

[Elecraft] K-Pod es K3/0-Mini

Hi, today I got my K-Pod and I was only able to test it with the K3/0-Mini right now. But I get a few issues: * Tuning with the K-Pod very slowly works fine. Tuning at normal rate, I guess I can go for about five ticks and then it stucks. Normal Knob on the K3/0-Mini continues

Re: [Elecraft] PX3 BETA 1.45 firmware now available

Great job, Paul. I tested all of the new features this evening (and early morning) and have sent you detailed test results. I would like to highlight one feature in particular. The new PX3 #MAA and #MBA commands control the PX3 markers. These commands can be assigned to a remote knob such as

Re: [Elecraft] OT - 6m antenna

I built one using 1/2-inch electrical conduit (steel) and clamped each half to a 1-inch thick board with conduit clamps ran coax to the dipole an trimmed length to get good SWR. I assume you know how to calculate a half wavelength (cut the tubing about 2-inches long so you have some material