Re: [Elecraft] DSPx module

Vic, Comments below. On Tue, Apr 11, 2023 at 4:03 AM Victor Rosenthal 4X6GP wrote: > While cleaning my shack, I found a KK7P DSP module. ... It says "KK7P DSP > MODULE > REV C (c) 2003" on it. > > 1. Is this the same version as the one in the KDSP2? That is, can it be > used as a replacement

Re: [Elecraft] Faulty KDSP2 module

Chris, The KDSP2 consists of two boards: the factory-built DSPx module and the KDSP2 "carrier" board. When you say you swapped in a working DSP module, do you mean a working DSPx, or the entire KDSP2 assembly? 73, Lyle KK7P On Mon, Oct 10, 2022 at 8:22 AM Chris wrote: > Hello, > > I have a

Re: [Elecraft] KPA500 Parts

7.5V It is not there to regulate, but to limit in case of something bad happening, while allowing the gate of the FET to get the full control voltage for T/R switching. The zener normally is not conducting. 73, Lyle KK7P On Wed, Aug 17, 2022 at 12:08 PM RALPH TURK wrote: > The real question

Re: [Elecraft] K3 Birdies

In addition to cable dress and being sure the cables are fully inserted/mated, be sure all the shields and the case have good metal-to-metal contact. Might want to loosen the various screws 1/4 turn and then tighten them. The screw on the left panel that ties to the shield behind the DSP board

Re: [Elecraft] KPA500 Issue

Jim, See page 38 of the Rev E1 KPA500 operating manual for how to set the radio in the KPA500 menu (not KPA500 utility). This is the current version of the manual a available on the Elecraft website. 73, Lyle Kk7P On Thu, Mar 31, 2022 at 5:12 PM Jim Clymer wrote: > In my case, it was not the

Re: [Elecraft] De-soldering Tool Recommendations?

Or use ChipQuik Alloy and a low temp iron along with a bit of solderwick. Much easier than a SoldaPullt or even my trusty but bulky Hakko 808, safe for the PCB and nearby components. And doesn't require a beer... Lyle KK7P On Mon, Mar 14, 2022 at 5:04 PM Wayne Burdick wrote: > Shep was before

Re: [Elecraft] KX2 sluggish/intermittent VFO display

All encoders in the KX2 are soldered you the control panel board. 73, Lyle KK7P Sent from my iPhone > On Apr 19, 2020, at 3:57 AM, Heinz Baertschi > wrote: > >  > Thanks Tom, interesting to know. > > *When troubleshooting it would still be of great help to know how the KX2 > encoder is

Re: [Elecraft] NR

Vic, The NR algorithm always works better with a wider bandwidth. It is simply building a not-too-narrow filter around what it perceives to be the signal. Glad you found it helpful! 73, Lyle KK7P Sent from my iPhone > On Feb 22, 2020, at 10:38 PM, Vic Rosenthal wrote: > > I’ve never

Re: [Elecraft] K3: DSP Bandwidth Limit

Fred, The audio CODECs in the K3 have a 12 kHz sample rate. This puts the maximum audio bandwidth at 6 kHz. Practical limits of DSP filtering in the context of the K3 implementation limit audio to 4.5 kHz or so. Aliasing around the 12 kHz sample rate of the CODECs required that “brick wall”

Re: [Elecraft] Uploading voice files to K3 DVR?

Record them. There is no file transfer protocol defined to upload audio clips to the KDVR3. 73, Lyle KK7P Sent from my iPhone > On Nov 9, 2019, at 4:01 PM, Eric - Gmail wrote: > > Is it possible to upload voice files to the DVR in the K3, or do I have to > record them directly? > >

Re: [Elecraft] OT: Open Source Code

DSP code only.  The code in the AVR was not opened. 73, Lyle KK7P On 7/1/19 6:29 PM, Don Wilhelm wrote: Lyle, Does that include the KDSP2 Firmware IC code?  Or is it only the code in your DSP-x module? 73, Don W3FPR On 7/1/2019 7:21 PM, Lyle Johnson wrote: FWIW the DSP source code

Re: [Elecraft] K3S subreceiver sound "problem"

Is the "dull and muffled" only with the 400 Hz filter?  Does the Subrx have any other filters? If it is just the 400 Hz filter with the problem, it may be that the filter offset is not set correctly. 73, Lyle KK7P On 7/1/19 5:02 PM, Robert G Strickland via Elecraft wrote: I put "problem"

Re: [Elecraft] OT: Open Source Code

FWIW the DSP source code for the KDSP2 was and has always has been open source.  Until the Elecraft web site update in the last several months, and while the KDSP2 was an active product at Elecraft, the code was on the website for free download.  I recall perhaps four inquiries about it over

Re: [Elecraft] K4 RX dynamic range

Mark, The "20 dB lower than a K3" figure is an estimate for 100 kHz Blocking Dynamic Range rather than the 2 kHz Narrow Spaced Dynamic Range. The K3 is listed at 140 to 150 dB (depending on model, synthesizer, etc) on Sherwood's Receiver Test Data page.  The K4 series without the "HD"

Re: [Elecraft] SP3 vs SP4 speakers

Case size.  The K4 is the same size as the KPA1500, which is slightly larger than the K3.  So the SP4 height and depth match the K4, like the SP3 does the K3. 73, Lyle KK7P On 5/16/19 5:32 PM, Christopher Hoover wrote: What's different between the SP3 and the SP4 besides the silkscreen ?

Re: [Elecraft] KX-2 Remote

KX3 (but not KX2) can be turned on by brief application of 8 to 12V on the PTT pin of the mic connector. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] K3 S-meter reading and coax input or antenna voltage ?

Phil, With the original K3, S Meter "ABS" mode the S meter is referenced to the signal level at the antenna jack.  S9 = -73 dBm = 50 uV into 50 ohms. In the other S Meter mode, the reading varies with ATT and PRE settings, as well as signal level. 73, Lyle KK7P On 1/23/19 10:00 AM, Phil

Re: [Elecraft] KX2 Filter Bandwidth issue

Is the mode DATA A or USB/LSB?  Is USB/LSB (voice SSB) this is normal behavior as the radio switches to "3rd method" demodulation.  DATA A should not have this behavior. 73, Lyle KK7P On 1/16/19 11:06 AM, Corky wrote: I have been using my KX2 for digital (Fldigi and SignaLink) and am seeing

Re: [Elecraft] KX3 AFX - Pitch Setting Enhancement ...?

There is no "PITCH" mode in the K3 AFX selections, only the KX2/KX3. 73, Lyle KK7P On 8/5/18 6:14 AM, Grant Youngman wrote: I appreciate the clarification.  At least I’m not crazy this time :-) ... In any case, it works better on the KX3 than it does on the K3.

Re: [Elecraft] KX3 AFX - Pitch Setting Enhancement ...?

There are multiple AFX choices for the KX2/3 transceivers. The PITCH selection uses a fixed set of filters for pitch mapping and as noted by the OP the center frequency does not follow the pitch setting. At the time it was implemented we thought it worthwhile to include even if it didn't

Re: [Elecraft] [K3S] Radio transmits when computer powered on

In cases like this, please check the firmware release notes for the radio.  The info is often not found in the manual, which gets updated infrequently.  I added the bolding... 73, Lyle KK7P *MCU 5.33 / DSP 2.86 / FPF 1.23, 8-3-2015* ... ** PTT/KEY USE WITH THE USB PORT IMPROVED:*  PC

Re: [Elecraft] Changing defective KX3 VFO B encoder

Scott, There is no need to remove the membrane switch assembly to replace the encoder at the VFO B location on the KX3.  I just examined a CP board assembly to verify this. However, a lot of heat (not high temperature!  they aren't the same!) is needed to unsolder the frame mounting lugs.

Re: [Elecraft] When to use the preamp on the K3/K3S

In the K3/K3S/KX2/KX3, "RF Gain" adjusts receive path gain ahead of the AGC detector while "AF Gain" adjusts the receive path gain AFTER the AGC, if any, is applied. 73, Lyle KK7P ... "RF Gain" in modern receivers really just sets the maximum gain the AGC will allow, so reducing it only

Re: [Elecraft] K3s SSB generation ?

The output from the DSP is SSBSC. 73, Lyle KK7P On 5/15/18 4:42 AM, Michael Blake wrote: When transmitting SSBSC is the output from the DSP a SSBSC or DSBSC signal? It is not clear to me if the crystal roofing filter removes the opposite sideband or just cleans up what is left of the

Re: [Elecraft] KXAT2 problem

This often indicates the connection between the ATU and the BNC has opened. 73, Lyle KK7P Sent from my iPhone > On May 5, 2018, at 5:52 PM, VE2PID wrote: > > Hi to all .. I have a problem with my KX2 which appeared today. When I press > ATU to start a tuning sequence, I

Re: [Elecraft] No Audio

When installing the DSP board,it is very easy to mis-align the 5-pin connector between the front panel board and the DSP board. This connector carries mic audio from the front panel microphone jack to the DSP. 73, Lyle KK7P __

Re: [Elecraft] K3s Bug or Feature?

The information is in the firmware real ease notes. 73, Lyle Sent from my iPhone > On Feb 25, 2018, at 1:21 PM, Michael Blake wrote: > > Ken (K6MR) answered my question, it is a feature. I still can not find this > in the K3s’s Owners Manual but Ken was 100% right. > > Here

Re: [Elecraft] QUICK QUESTION

Yes, it will have an SMA connector for the 2 meter antenna out the same side as the BNC antenna connector. 73, Lyle KK7P On 2/6/18 1:58 PM, Michael Goins wrote: Is their an easy way to tell if a KX3 has the 2 meter module in it without opening it up?

Re: [Elecraft] K3 RX Equalizer

The K3 filter is a little unusual in that the receiver equalizer is part of the DSP bandpass filter, not a different or subsequent filter.  This helps minimize latency. As a result, the equalization is applied before the audio paths are separated, so it is on all receive paths. In data

Re: [Elecraft] K3 RX Equalizer

Yes. 73, Lyle KK7P On 12/29/17 9:53 AM, Chris Hallinan wrote: I understand that the K3 has two separate equalizer settings for CW and SSB. I also understand it is not active in the Data modes. However, there are four sources of audio output: 1) Internal Speaker 2) SPKRS (rear panel) 3)

Re: [Elecraft] K3 / RF gain - S meter issue - Similar issue

There are several things going on here. 1) The "hardware AGC" is derived at the 15 kHz IF and is designed to prevent overdrive to the DSP's IF Analog-to-Digital Converter (ADC).  It also serves to prevent the 15 kHz IF amplifier from being driven into non-linear operation. 2) The "hardware

Re: [Elecraft] K3S and P3 pinout/cable stuff... (How to drive yourself mad integrating an SPE amp into your system)

Clay, Go to the Elecraft website, then go to the manuals section, then download the K3S schematics, then go to the KIO3B Digital I/O Module page.  You'll find two boxes with pin definitions for the connector in question.  And of course the K3S schematic set will allow you to follow them as

Re: [Elecraft] line IN and OUT on new computer

Note that Mackie claims driver support for this product only through Win 7 (Win 8 is specifically not supported which may imply Win 10 isn't, either), and MacOS through 10.10 (Yosemite) -- later MacOS releases are specifically not supported. Which doesn't mean it won't work, but this is from

Re: [Elecraft] [KX3] Power On/Off Feature Request

The power switch pair is not a software controlled option, but a hard-wired circuit that cannot be made configurable. 73, Lyle KK7P (designer of the board) On 7/17/17 3:45 PM, Scott Russell wrote: On Jul 17, 2017, at 3:22 PM, Scott Russell wrote: Would it be possible

Re: [Elecraft] Really OT: Inside-the-vehicle HF antennas (possible bonus points)

In my Model S all AM/FM broadcast reception antennas are hidden in the driver-side mirror housing. I suggest you simply make a physically small antenna that can fit under some plastic part of your car. Wayne has a Prius so it is mostly plastic bodywork providing lots of opportunities.

Re: [Elecraft] dBV reading on Kx3

Nothing meaningful. First, read AFV and for a couple of readings to set the reference. Then go to dBV. dBV will then show you the difference in dB between the current signal and the reference. On a dummy load it'll bobble around a low value since it is just thermal noise and not a signal

Re: [Elecraft] K3 & Heil HM-10 Dual

I'd try Front Panel, HIGH, no bias assuming this is a dynamic microphone. In general, Heil dynamic mic elements have low output levels. 73, Lyle KK7P On 4/17/17 8:14 PM, Steve Wilson via Elecraft wrote: ... I deduced that the setting should be Front Panel, Low, No Bias, but am not 100%

Re: [Elecraft] Laptop to KX3 question

Be sure the MIC BTN menu is set to off, otherwise the radio will think the PTT is being asserted when you plug in the cable. 73, Lyle KK7P ...When I plug green-band cable from PC phones output to KX3 mic input the KX3 goes immediately into TX mode with no modulation. .

Re: [Elecraft] [kx2] temperature compensation procedure for kx2 ?

No and no. 73, Lyle KK7P On 2/20/17 10:19 AM, kevino z wrote: Is there the ability or even need to perform the temp compensation / calibration procedure in the kx2... __ Elecraft mailing list Home:

Re: [Elecraft] OT: Need source for 8-pin mic panel jack as on K3

Hello Joel! Try http://www.americanradiosupply.com/8-pin-ham-cb-radio-microphone-connector-panel-jack/ I haven't tried this particular source, but I suspect it will work for you. 73, Lyle KK7P On 2/20/17 8:29 AM, Joel Hallas wrote: Dear List, I need to find a source for the type of 8-pin

Re: [Elecraft] PTCiiUSB Modem ACC instructions to KX3/KX2 TTL or V24?

Chris, The KX2 and KX3 use 12V switching levels for sending data out its serial port. It was designed to interface to "standard" RS232 serial ports. I'd use standard RS232 levels first. If that doesn't work, and If the PTC modem in TTL mode is protected from 12V levels, I'd try that next.

Re: [Elecraft] Confused about K3 to K3S Migration service

Chuck, This link should answer your questions. < http://www.elecraft.com/K3_K3S_Migration.htm > 73, Lyle KK7P On 2/4/17 1:20 PM, Chuck Guenther wrote: I've read the Elecraft offer in the recent newsletter. Here is my understanding of the migration service, which may be completely wrong: I

Re: [Elecraft] K3 - stuck at MCU LD we upgrading software

You may need to use the RS232 adapter cable in this case. Lyle KK7P Tony, The usual reason for that is a glitch in the computer. The fact that the USB port is no longer detected points more to the computer than the K3. Re-boot the computer, and see if it detects the USB adapter - that has

Re: [Elecraft] k-pod data cable

The KPOD does not use I2C. It comes with a very short cable for good reasons. Increasing the length somewhat is probably OK. Increasing it a lot is probably a very bad idea. "Just because you can doesn't mean you should" comes to mind. 73, Lyle KK7P It is likely that the interface used

Re: [Elecraft] KX3/KX2 voltage display

Hello Erik! Yes, it is expected. There is low-drop diode in series with incoming power to protect the radio circuitry from reversed polarity at the power connector. The typical voltage drop is about 0.3V at nominal current. The internal "12V" supply voltage being reported is after the

Re: [Elecraft] K3S No TX Audio via USB

John, Be sure you are using LINE IN gain rather than MIC GAIN to adjust the Tx audio level. 73, Lyle KK7P On 12/17/16 4:49 PM, Nr4c wrote: You should be using DATA A mode for wsjt. Look in the manual for data modes. It works. Sent from my iPhone ...nr4c. bill On Dec 17, 2016, at 5:49

Re: [Elecraft] KX3 and FLDIGI

Kevin, The IQ output is not processed by the DSP. A signal above OR below the carrier will show up. There is no opposite sideband rejection. A signal from the headphone jack will have the opposite sideband removed or significantly reduced in amplitude. 73, Lyle KK7P On 12/2/2016 2:43

Re: [Elecraft] Computer Boot Up Keys the K3S

See the firmware release notes. There is a setting to help with this. 73, Lyle KK7P ...the solution. you could disable keying from the RTS or DTR in the menues but if you are using that to say send CW from your computer that is a poor option. When I boot up my computer it keys the

Re: [Elecraft] operating HF / KX3 in a Tesla Model S

Hello Johnny! You may need some filtering on the 12V power connector in the center console of the Model S. The 12V battery is also quite small in the vehicle. I'd be inclined to package an LiFePO4 battery pack and a charger for it and place it in the center console area, powering the

Re: [Elecraft] "Turn on the KPA500" Error

Stewart, The message really means, "Something of sufficiently low impedance to common is attached to the auxbus, holding the auxbus line at a logical low. Turn on the device if it is off -- this is the most common cause of the problem -- or disconnect the device from the auxbus." The

Re: [Elecraft] KX3 SDR

Sorry, I was thinking of the KX2 which always has the IF shift enabled. In a KX3, the center of the IQ stream is approximately the dial setting. I say approximately because some modes (AM, FM) or submodes (narrow SSB using Weaver demodulation) there may be some offset regardless of the

Re: [Elecraft] KX3 SDR

The signals at the IQ jack on the KX3 are analog, not digital. They are centered approximately 8 kHz away from the dial frequency as the KX3 uses an internal offset of 8 kHz. Depending on the firmware release and user settable options, that offset may be on either side of the center of the IQ

Re: [Elecraft] Kx2 questions

Yes, this should work fine. 73, Lyle KK7P 1) ...Looks like the transmit side (KX2 mic input) is a 4-conductor jack with separate signal & logic grounds. Will it work with a 3-conductor cable which would seem to short the grounds together?

Re: [Elecraft] K3 - communication failure after KIO3B upgrade

Carl, A couple of thoughts. 1) Losing communications with the Y cable plugged into the KIO3B but not having BOTH DE-9 connectors attached to the P3 will result in no communications. The KIO3B senses the Y cable and routes the USB side communications to the P3 which then routes signals to

Re: [Elecraft] [KPOD] Re: Now that the K-Pod is shipping, (longer RJ12 cable)

It is a 6-pin connector and the wire at pin 1 should be cut at the radio end and to be safe cut it at both ends. Yes, people will use full 6-pin cables and may not observe any problems. Regardless of such anecdotal evidencee, cut the wire to pin 1. And of course, turn off the radio before

Re: [Elecraft] [KPOD] Re: Now that the K-Pod is shipping, (longer RJ12 cable)

I suggest cutting the wire connected to pin 1 at the radio end. Can't hurt to cut it at both ends. Otherwise, there is a possibility of the radio doing things you prefer it to not do, probably precisely when you prefer that it not do those things... The function associated with pin 1 is not

Re: [Elecraft] K3 mod for K-Pod level of difficulty

The mod simply allows more current to be drawn from an otherwise unused pin on an otherwise unused connector while still affording protection to the power supply within the radio (protection from a short on the connector pin). 73, Lyle KK7P On 6/29/16 8:04 PM, Clay Autery wrote: Apologize

Re: [Elecraft] Narrow Digital Modes ??

I am uncertain why the OP claims the KX2 is not usable on JT65. One of the KX2 field testers operated the radio on that mode without issues and reported the same in an eham review of the KX2. In fact, we paid great attention to frequency stability in the KX2 design, applying lessons learned from

Re: [Elecraft] KX2 no assembly?

The KX2 options can be added at any time in the field. No return to factory required. 73, Lyle KK7P Can the ATU and RTC be added later or are they only factory fit at > build/purchase ? > __ Elecraft mailing list Home:

Re: [Elecraft] K3s USB XMIT audio

Be sure there is nothing plugged into the LINE IN jack on the KIO3B if you are using USB for Tx audio. 73, Lyle KK7P OK. I've tried about everything I can think of and have read all the emails and web posts but simply cannot get the K3s to transmit audio via USB...

Re: [Elecraft] Delayed Options

The options can easily be added at any time. You may want to download the manuals for the two options and look over the sections on installation. 73, Lyle KK7P ...Would it be especially difficult if either of the following options were delayed: * KXFL3 Dual-Passband Roofing Filter *

Re: [Elecraft] K3EXREF question

Almost. The TCXO has no control input and is not tuned; it is only measured. The measurement information is passed to the radio's MCU which then uses the data to determine the correct value to command the synthesizer(s), drive the REF CAL display, and so forth. 73, Lyle KK7P The K3EXREF

Re: [Elecraft] K3S USB port question

Yes. Set the RS232 menu item to the speed you want. If it is not in USB in that menu, then it is using the regular RS232 port. To use the USB audio for Tx, be sure no cable is plugged into the analog LINE IN jack. 73, Lyle KK7P Can the K3 be controlled using RS-232 via the RJ-45 while

Re: [Elecraft] Neogrip now available

It is a custom part designed at Elecraft. 73, Lyle KK7P Is that the same trim ring that TenTec used to sell? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

Re: [Elecraft] KX3 IQ ADC and IQ DAC specification?

Hello John! The components used are shown in the KX3 schematics available on the Elecraft website. You can get whatever specifications your are interested in about those components from the manufacturer's data sheets. The sampling rate currently being used, subject (but unlikely) to change

Re: [Elecraft] K3 SN89XX Audio Problem Help please

Bill, Try this (from K3 firmware release notes0: MCU 4.86 / DSP 2.83, 6-9-2014 * REAR HEADPHONE JACK CONTROL: The rear headphone jack (on the KIO3) was recently changed to a different type whose speaker-cutout switch logic is inverted from the original. If speaker audio is missing even

Re: [Elecraft] Whole house surge protector at the main breaker?

Siemens TPS3A11 was installed here when the service entry was rewired last summer. Yes, the electrician installed it, not me! 73, Lyle KK7P On 01/06/2016 02:12 PM, kg9hfr...@gmail.com wrote: OK, I am curious, what are you guys using for the whole house surge protector at the main breaker?

Re: [Elecraft] K3 - AFSK anamoly? No replies, try again

Mike, It could be that the band is quiet, this is a strong signal (S7 or more) and as you tune through to the opposite sideband the AGC is kicking up the gain so you hear the signal down some 70 dB or so, but if it is a strong signal on an otherwise fairly quiet band, you may hear it. 73,

Re: [Elecraft] K3S + SteppIR Controller+ MacLoggerDX

Please use the P3 PC connector, not the XCVR connector. The XCVR connector has a lot of special data that flows between the K3(S) and the P3; the PC connector has this extraneous and undocumented stuff filtered out. 73, Lyle KK7P ...you should have the "RS-232 Y" cable to activate the

Re: [Elecraft] KIO3B Connectivity

Actually, the KIO3B USB port handles PTT and Key just as if they were attached to a physical serial port. It does NOT handle FSK, which was and remains part of the ACC connector, not the serial port or its control signals. 73 and Merry Christmas, Lyle KK7P For FSK you still have to break

Re: [Elecraft] KIO3B Audio Spec

The USB CODEC chip is 16 bit. The sample rate is set by the attached PC, but is usually 44.1 kHz or 48 kHz. 73, Lyle KK7P Any info on the audio bit depth and sample rate? __ Elecraft mailing list Home:

Re: [Elecraft] K3S DSP filter plots

The narrowest filter settings (50 Hz and 100 Hz) are actually steeper than this, and the IIR filters (menu selection) are different, too. I see all sorts of notes in this thread about S Meter readings. Much easier to turn AGC off and use the dB metering function in the radio. Of course, I admit

Re: [Elecraft] KX3 to Computer

Disable the mic buttons (see menu items) and use VOX (or a serial port command) to switch between Tx and Rx depending on your program's features. And be sure to set MIG GAIN to ZERO then gradually increase it to get the 4-5 bars of ALC indication. If the MIC GAIN is too high for the

Re: [Elecraft] JT65 audio noise

The DSP code in the K3 and K3S limits the audio bandwidth to about 4.2 kHz, and that won't be changing in any significant way. 73, Lyle KK7P 2. Is there any way to increase my filter bandwidth to be wider than 4K? Shouldn't I be able to get 6K with the AM filter?

Re: [Elecraft] K3 Popping noise in headphones??

The selection of IIR versus FIR filtering for the narrowest bandwidths (50 Hz and 100 Hz) may also have some effect on this. In general, the K3 and K3S switch to a different filtering algorithm for these two bandwidths. The loading of coefficients and filter settling time -- and to some

Re: [Elecraft] [K3] ALC In DATA A

Hello Joel! In the K3, the first 5 bars of the "ALC" bargraph indicator are just audio level. Traditional ALC - reducing drive to to transmit strip to control power level - does not occur until somewhere between the 5th and 6th bar. So the directions to have 4-5 bars of ALC just means that

Re: [Elecraft] Strange K3 microphone /PTT fault

If Pins 7 and 8 are connected together (verify with ohm meter) but not connected to the mic jack shell, you may wish to remove the front panel assembly and look just above the Mic Jack at a component labeled "L4". It should be a short. If it is broken, or other than a short, replace it with

Re: [Elecraft] Best way to make comparative antenna signal strength measurements using K3 (and P3)

Regarding the K3, select an antenna, be sure RF gain is at max and turn AGC OFF. Set the display to AFV for a couple seconds. This provides a baseline value against which the DBV display is calculated. (This means dB in terms of voltage, not the traditional, standard dBv. Thus 2x the

Re: [Elecraft] Connections for K3S, P3 Revisited

Be sure the RJ-45 portion of the K3S<->P3 "Y" cable is fully seated. Sometimes the rubber boot slides a bit on the connector and it appears to be fully mated, but isn't. It must be seated until the plastic tab on the RJ-45 clicks. There is a jumper connection in the RJ-45 connector on this

Re: [Elecraft] K3S PTT using DTR/DTS issue

That won't work. Nothing will be damaged. The input signal group TO the radio from the outside world (RTS, DTR, serial data) are physically switched as a group between the RS232 buffer chip and the USB<-> serial chip. In USB mode, data to the radio, along with RTS and DTR, will only be

Re: [Elecraft] K3S PTT using DTR/DTS issue

Hello Jerry! I am not sure what you mean by "I'm already using the USB for control so will just use it for PTT. " You can certainly use USB for audio and RS232 for serial control. If you use RS232 for serial control, you need to set up the menu for the data rate. You must also use RS232

Re: [Elecraft] Analog vs. Digital Front Ends

One has to ask, "Which large consumer of high dynamic range, high-speed sampling ADCs is requiring more performance than presently exists? What drove the market for the present ones?" The driver for the current generation, based on limited information, is the technical requirements for

Re: [Elecraft] [K3] Width Control and AF Output Level

Check if IIR or FIR filtering is selected for the narrowest bands. Also note that the receiver equalizer is not used in the 50 Hz and 100 Hz widths, so if the radio is set up for a boost at the selected pitch frequency, the amplitude will drop. Be sure the receiver equalizer is set to o in

Re: [Elecraft] CW RX

Note that Rx EQ does not add additional stages of filtering selectivity. The DSP builds a single filter which includes the equalization parameters. In general, you should start by setting the RxEQ on voice signals until things are equalized for your speaker or headphones and your ears, and

Re: [Elecraft] K3 Problem Solved!!!!

You can also try turning the P3 OFF, then loading. This will confirm the wiring/cables/etc. 73, Lyle KK7P ...The connection with the serial adapter cable to the P3 *should* have worked. That means you may have to do some additional investigation.

Re: [Elecraft] Fwd: Re: Full duplex for Sat work?

The K3 is not a full-duplex radio. At the time of the design of the K3 I was hoping we could make it a full duplex radio with external transverters, as I was responsible for and/or participated in the design of several subsystems in AO-40 and other Amateur spacecraft. The Subreceiver has

Re: [Elecraft] P3 TX Mon Usefulness?

You *can* hook up your Eico 720 Tx and see its CW rise and fall times and perhaps use that information to dig into the radio and improve it. In SSB mode you can see the effect of the K3 Tx EQ and speech processor as it relates to peak-to-average power. And as you say it provides PWR and SWR

Re: [Elecraft] RTTY on the K3S

See below Is there any way for the K3S to take its audio from the USB codec rather than the Line-in or Mic-in? I don’t see that choice in the menu. Yes, use LINE IN and don't plug any cable into the LINE IN jack on the back of the radio. it will then use the USB. Conversely, is there any

Re: [Elecraft] K3S Power On / PTT

This problem is fixed in the latest beta firmware for the K3/K3S. Until then, it is best to set PTT-KEY to OFF-OFF before taking the K3/K3S to a location without USB connectivity. 73, Lyle KK7P On 8/8/15 10:31 AM, Marco HB9CAT wrote: I configured my K3s to use DTR to key CW, (CONFIG:PTT-KEY

Re: [Elecraft] HRD and K3

In addition to Joe's excellent advice, you may need to set the Tx output level for the soundcard in DM780 to a higher-than-default level. In the DM780 version I have on my computer, I have the Transmit Level sliders for Master and Wave both set to about 70. With that, my K3 (S) LINE (IN)

Re: [Elecraft] K3S Power On / PTT

We save the configuration file at the factory. We recommend that you save the configuration file using K3 Utility upon receipt of the radio, and after installing options, loading memories, etc.. With that saved, if you have to do a master reset you do an EEINIT and then load your saved

Re: [Elecraft] K3S Line out

Normally, line out has a fixed gain (settable in a menu) with the left channel as the main receiver and right as the sub-receiver. An alternative is to set it to reflect the phones jack. You'll get both channels, but the gain will vary with the AF gain control. See the K3/K3S manual for

Re: [Elecraft] TX Audio

Be sure the 3.5mm LINE IN jack has nothing plugged in. if a cable is plugged into this jack, the KIO3B will only accept LINE audio from the jack, not from the USB. LINE OUT will always be active on both the analog 3.5mm jack as well as USB. 73, Lyle KK7P On 8/5/15 2:21 PM, Keith Robinson

Re: [Elecraft] Does the K3S DSP support LMS noise reduction ?

Yes, identical to the K3. 73, Lyle KK7P I don't see LMS listed. Does it support that? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Driver Requirement for K3S

The KIO3B includes an FTDI-based serial port (drivers widely available for all sorts of OSes and versions of same) and a UAC1-compliant CODEC (driver built in to most OSes since late in the last millennium). It works fine with DM780 and other digital mode programs, you just need to set it up

Re: [Elecraft] KX3 and Digital Modea

The KX3 operates well in most environments in modes with reasonable key-down times. Recognizing that more and more operators are using digital modes with extended key-down times, we recently replaced the supplied heat sink of the KX3 with one having significantly more thermal mass and

Re: [Elecraft] KX3: no ALC bars on transmit SOLVED

Yes, or so the 5 bars are showing. Traditional ALC doesn't commence until after the 5th bar, so should be OK. 73, Lyle KK7P On 7/14/15 11:13 AM, Michael Rudolph wrote: Thank you David and everyone else. The problem was that for some mysterious reason, FLdigi lost its proper configuration

[Elecraft] Paper Logs (was Audio mixers)

Or, some guys just prefer to do it with paper and pencil. I have lots of ebooks, but I often prefer to grab a physical, printed-on-paper book and curl up on the sofa and read. Heck, I've even heard some guys are so stuck in the past they actually use CW on HF 73, Lyle KK7P (who is

Re: [Elecraft] KBPF3A and KBPF3B

Ted, The discrepancies in instructions are due to the KPBF3A instructions being written with the K3S in mind, while the KBPF3 mod instructions were written with K3 in mind. If a KBPF3A, or a modified KBPF3, is installed into a K3, the RF board (or KRX3 main board) bypasses must be done for

Re: [Elecraft] Elecraft K3S Elecraft web page!

In a word, yes. 73, Lyle KK7P I wonder whether CW keying can be done via USB, like with the serial port now. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

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