Re: [Elecraft] KAT500 as a remote-controlled tuner

UV in South Florida is so strong that we used to erase EPROMS by just sitting them outside. Miami is very much subtropical, and the sun’s damage from UV and intensity is incredibly strong. It does have high humidity, which is rare in Arizona. It would be interesting to use good tools to measure

Re: [Elecraft] Subject Re: Just a thought...

Hmmm. Age of the transceiver maybe? Newer equipment would have a weight and power supply advantage over the older transistorized or tube-type rigs! 73! Jack, W6FB > On Nov 15, 2018, at 5:15 PM, n...@zianet.com wrote: > > James Bennett via Elecraft writes: > >> How about extra bonus points

Re: [Elecraft] WSJT-X Disabling TX INHIBIT on K3S

Andy; Are you saying that you have to send the radio a serial command to engage and disengage the inhibit property? I don’t see how that is really useful for SO2R where you need pretty much instant switching, but then I doubt that is its use on the Kenwood. That leads to the question of how

Re: [Elecraft] Killed the KPA500 :)

Mike; If you haven’t done so already, please call the customer support guys down in Watsonville. They should be able to help you with the situation. They may ask for a fault log from your KPA500 - if so please provide it. I will try to quickly turn around the analysis that I do each time one

Re: [Elecraft] KPA500 - Not Going To Full Power

faster. The advice is good - check the antenna system to make sure it is not being overloaded. 73! Jack Brindle, W6FB Elecraft Engineering > On Jan 6, 2019, at 1:36 PM, fyredude901 wrote: > > Received my KPA 500 / KAT500 combo for Christmas. Got them hooked up and > they were

Re: [Elecraft] 500Hz Filter Offset Question

This has to do with the synthesizer boards. I believe the answer is that you don’t need to match them with the new synthesizers. You may need to still enter the offsets, however. 73! Jack, W6FB > On Jan 14, 2019, at 2:30 PM, Rich wrote: > > I just received my 500hz filters from Elecraft.

Re: [Elecraft] KPA500 AC power

Yes. The current draw when running at 220V will be half that needed for 110V, which means the heat losses in the power cord and wall wiring will be cut by about one-fourth. This also means the voltage drop on the power cord and wall wiring will be much less at 220V. So, there is a pretty good

Re: [Elecraft] KPA500 AC power

James; There would be no difference in the heat generated inside the KPA500 since the KPA’s transformer is delivering the same voltage and current in either case. The entire difference would be voltage drop on the power line and KPA’s power cord due to the higher current at 110V. The losses

Re: [Elecraft] [KAT500] Odd KAT500 Behavior

It seems that the KAT may not be getting fresh band info - if it did you would be hearing relays being set before the K3 transmitted. The KPA500 is listening to the same Band signals as the KAT (but not the Auxbus data), so I would turn on the KPA500, leave it in standby, and watch the display

Re: [Elecraft] KPA-1500 issues

Need to have recent firmware in both the KAT500 and KPA500 also. The KPA500 for this was updated shortly after the KAT500 was created. In any case, the latest firmware for both devices is strongly recommended. 73! Jack, W6FB > On Nov 29, 2018, at 6:48 PM, Don Wilhelm wrote: > > Randy, > >

Re: [Elecraft] External AMP

No. There is no power source in the ACC connector from the K3. Your use of the 12V connector is the right solution. Jack, W6FB > On Nov 30, 2018, at 7:02 AM, Raymond wrote: > > I am using my ancient Heathkit SB 230 (original tube) with my K3s. Is there a > way to get 12 volts out of acc

Re: [Elecraft] KAT500 investigation results (WAS KPA-1500 issues)

Randy; The resolution of the frequency being reported from the K3 to the KAT500 is 8 KHz. This probably does a better job explaining why the relays switch every 8 KHz than bin size. I would bet that once in a while you will find two adjacent frequency segments that fall in the same bin, and no

Re: [Elecraft] Problematic precipitate

The FT8 Roundup starts later today. If you wish to participate in it, you must use the v2.0.0-rc4 or 5 software. The older code simply won’t work for the contest operation. Think of it as an opportunity to collect more grid squares. Also, you can certainly have both applications installed side

Re: [Elecraft] TX Delay

What’s the lowest it can go? The KPA500 switches incredibly fast since there are no relays to switch. It is a true QSK amplifier. Try it at the standard setting for the IC-7610 and see if there are any issues. I bet there won’t be. 73! Jack, W6FB > On Nov 25, 2018, at 2:19 PM, Macy monkeys

Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable

blame you for buying it factory-built. 73! Jack, W6FB > On Dec 30, 2018, at 6:30 PM, Ken B wrote: > > Thank you - I followed Fig 3 on page 10 which is specific to ICOM. Yes all > cables ohm'd out with no shorts > > > > From: Jack Brindle > To: Ken B >

Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable

e off. I work 60 to 70 > hrs per week and appricate the down time > > Sent from Yahoo Mail on Android > <https://go.onelink.me/107872968?pid=InProduct=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers_wl=ym_sub1=Internal_sub2=Global_YGrowth_sub3=EmailSignature> > On Sun,

Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable

to the antenna > - XMTR is connected via a 2 ft piece of LMR400 to the output of the KAP > - The unlabeled connector above the PTT RLY goes to the PA Key of the KAP > > > The KAP > - Other than what is mentioned above the only other connection is a piece of > LMR400 from Ant1 on

Re: [Elecraft] KAT500/KPA500 with Icom 7600 accessory cable

The folks in Watsonville are taking a well deserved rest, but some of us are still around. This sounds a lot like a grounding issue in your setup with ground being completed through the wall power ground pin. Tell me exactly all of the cables/connections going to the KPA500 (and from where).

Re: [Elecraft] Elecraft KX3 Utility error on Mac OS X High Sierra

Chris; The FTDI drivers are now maintained by Apple (since Mac OS X 10.9), so there is no need for installing the ones from FTDI. In fact you probably should uninstall them to allow the Apple drivers to do their job. But this isn’t an I/O issue. This looks like there is a corrupt file the

Re: [Elecraft] Trying to use KPA-1500 on 160

Pete; You should set your K3 so that it automatically adjusts power when the KPA1500 goes into OPER mode. To do this, go into the Config menu, the PWR SET entry, and set it to PER-BAND as described on page 63 of the K3S Operating Manual, rev A1. At this point you can switch the KPA into OPER

Re: [Elecraft] KPA500 Assembly Help

Ah, but you came to the right place to get an Elecraft answer! Use the two thick ones on the bottom plus one of the thin ones, then use a thin one on top. They are meant to reduce vibration, and thus hum when transmitting. Enjoy your KPA500, and if you have more questions, just ask! 73, Jack

Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

th this signal I could see it > inhibiting the amp on transmit but on receive? > > Kev > > > On Sat, Jan 26, 2019 at 1:53 PM Jack Brindle <mailto:jackbrin...@me.com>> wrote: > Kevin; > > Why do you think there is a problem with the KPA500? I haven’t seen anything >

Re: [Elecraft] KAT500/KPA500 - Sanity Check Please

Kevin; Why do you think there is a problem with the KPA500? I haven’t seen anything so far that explains that. In addition to the protections the KAT500 provides, the KPA500 has its own set of protections that keep it going or place it into a safe state. The KPA can take a lot of abuse before

Re: [Elecraft] Macintosh version of Elecraft KX3 Utility

gt; >>> 2019/03/29 0:17、Don Wilhelm のメール: >>> >>> My understanding is that a 64 bit version of the Mac and Linux Utilities is >>> "in the making". >>> But for now, you will have to put up with the messages from Apple that the >>>

Re: [Elecraft] Macintosh version of Elecraft KX3 Utility

Guys; Realize that Mac versions of the utilities are important to us “insiders” also. This is something that will be addressed in due time. 73! Jack, W6FB > On Mar 27, 2019, at 2:28 PM, Grant Youngman wrote: > > It’s kind of the way things go. I’d like to be able to run some 8-bit Z-80 >

Re: [Elecraft] Using KAP1500 with non Elecraft exciters

Richard; What do you mean by “things go into default”? The KPA500/KAT500 combo should play very well with the 7610. exactly what are you seeing? Jack Brindle, W6FB Elecraft Engineering > On Mar 2, 2019, at 7:30 AM, Richard Lawn wrote: > > I'm considering replacing my KPA5

Re: [Elecraft] Connect KPA-500, TS-480 and MicroKeyer II

The KPA500 does NOT have a pass-through mode. It DOES have a serial port dedicated to communicating with Kenwood radios to extract the operating frequency. It can just monitor the serial link or it can also poll for the needed data. You will need to provide a Y cable that connects the signal

Re: [Elecraft] K3/100 Voltage Drop when transmitting

Be sure to use a DVM external to the K3 to measure the voltage at the K3. The input protection diode in the K3 will cause some drop (1/4 to 1/2 volt perhaps). What this means is that the K3 meter will always show less voltage than is really present at the transceiver supply input. 73! Jack,

Re: [Elecraft] I'm a new Father of a KPA1500!

Ronnie; Congratulations. Now before you put it on the air, be sure to upgrade it to the latest firmware. A lot has changed since May 2018, and we have made a lot of improvements. In fact the latest release is an important one for your amp. Also, make sure the K3 has the latest firmware so that

Re: [Elecraft] TX Gain Calibration Fails on 6 meters

How are you doing the calibration - manual or computer? If computer, PC or Mac? Make sure you have the latest K3 Utility to do this. Recent versions of the K3 Utility had an issue with handling responses from the K3/K3S that caused calibration to fail. I believe they were fixed on the Windows

Re: [Elecraft] Mic Noise

That could be. USB and computer connections are notorious for causing problems if they are not shielded or connected properly. By unplugging and replugging the USB cable you just may have seated it properly and fixed things. Play with the radio for a while, on the air, and let us know if it

Re: [Elecraft] And what’s the latest firmware for the hat?

Guys, of course there is firmware in the hat! What do you think keeps the bill stiff? Just a testament to how good our firmware engineers are (starting with the head guy, Wayne) - no update is needed in this product! Now perhaps we might return to helping W5SUM enjoy his new acquisition of a

Re: [Elecraft] Connect KPA-500, TS-480 and MicroKeyer II

cable, it is a > support nightmare (as I have discovered with other amplifiers and > antenna controllers that claim to be "listen only"). As such, the > policy is now "no support for *any* "Y" cable CAT connection." > > 73, > > ... Joe,

Re: [Elecraft] Nasty spurs on RX with new KPA500

Gary; By now I am sure you have checked all the ribbon cable connections and are sure they are plugged in properly. This sounds like a problem that needs to be addressed by the tech support guys. Be sure to give them a call on Monday. 73! Jack, W6FB > On Mar 9, 2019, at 9:14 AM, Gary NC3Z

Re: [Elecraft] ALC control of W6PQL amp from my K3

As an example of how we feel about ALC with the K3 and KPA500, neither of my custom-made AUX-IO cables has the ALC pin (pin 15) connected. It is just not needed. If the KPA500 needs to protect itself, it will. 73! Jack, W6FB > On Mar 9, 2019, at 10:23 AM, Bob McGraw K4TAX wrote: > > I would

Re: [Elecraft] Connect KPA-500, TS-480 and MicroKeyer II

; On 2019-03-06 10:36 PM, Jack Brindle via Elecraft wrote: > > The KPA500 does NOT have a pass-through mode. > > Jack, thanks for the "official" information (although it is > a shame there is no "pass through" mode). > > As it stands, any Kenwood user

Re: [Elecraft] Connect KPA-500, TS-480 and MicroKeyer II

In fact that is exactly what the KPA500 is looking for. When SERPOLL = ON, it sends “IF;FA;FB;” to the XCVR port. From the response information it determines the Kenwood transceiver’s frequency whether it comes from VFOA, VFOB or one of the memory settings. 73! Jack, W6FB > On Mar 7, 2019,

Re: [Elecraft] KPA500 no transmit question...

This sounds like there is no RF going into the KPA500. When the KPA500 is in STBY mode and he transmits, do the KPA500 indicators show the proper power level to match what he thinks the K3 is outputting? He might insert a wattmeter between the K3 and KPA500 to make sure that power is going into

Re: [Elecraft] KPA-500 with Portable Generator

While it isn’t troubled by investors, it also rather likes inverters… Sorry, I got spell-corrected… 73! Jack, W6FB > On Mar 7, 2019, at 7:30 PM, Jack Brindle via Elecraft > wrote: > > The KPA500 does quite well with generators, especially the Honda family. > These days it i

Re: [Elecraft] KPA-500 with Portable Generator

The KPA500 does quite well with generators, especially the Honda family. These days it is the amplifier of choice for many DXpeditions who’s only power is provided by generators. Since the KPA500 has a linear supply, it is not troubled as much by modified sine wave generators and investors as

Re: [Elecraft] How to get a pgm like MSHV or WSJTx to read the K3 Sub-Rx QRG ?

It appears that you are looking in the radio to solve the problem you state. That is the wrong place. It is the computer software that has to ask the right question. The CAT interface for Elecraft radios is published and maintained by Elecraft. It is available at the Elecraft web site for

Re: [Elecraft] KIO2 RS-232 to USB?

Be absolutely sure to use the cable as described in the K2’s KIO2 manual to connect the K2 to the USB adapter. Using a straight-through cable will cause damage to the K2. 73! Jack, W6FB > On Feb 14, 2019, at 7:08 PM, K2bew wrote: > > My computer does not have a 9 pin serial port. I have a 9

Re: [Elecraft] Looking for a way to switch an antenna input to the KAT500

TopTen has a nice A/B switch with pretty good isolation characteristics. See: https://toptendevices.com/products/ab-station-selector/ It requires a 12V signal for switching, I believe. Array Solutions also sells some devices that may be

Re: [Elecraft] high input SWR KPA500

The DC should not have done anything - the KPA blocks it at its input. But the excess power apparently did quite a bit of damage. Call the tech support guys on Monday. Good luck in PACC. Most of us contest types in this area (Northern California) are operating WPX-RTTY this weekend. 73! Jack,

Re: [Elecraft] KPA500 serial interfaces

No. The transceiver port is meant to receive data from a connected Elecraft or Kenwood transceiver. It acts on data responses received from those devices. Specifically, it is looking of the following command responses from the transceiver: FA;, FB;, FR;, FT;, or IF;. The entire purpose of the

Re: [Elecraft] KEYBOARD

Several wireless Logitech keyboards have a very interesting feature - they can connect to several computers or devices, switching between them by simply tapping a key on the keyboard. As an example, I use a K780 with a Logitech Unifying receiver plugged into my P3. A second Unifying receiver is

Re: [Elecraft] Best Mac to use with KX3

WSJT-X runs just fine on my 2010 Mac mini with a core-2 duo processor. Almost every Mac that runs an Intel processor has at least a Core-2 Duo (the exception being the very first Intel iMac that used a single core Core-2 processor). I would not want to use a Mac with a sub 2 GHz processor - the

Re: [Elecraft] Latest Elecraft NEWS

My friend Don has a slightly faulty memory. The DX-60B (which I still have) was just a transmitter, no rx. It worked well with the SB-303. The HW-16 did indeed have a receiver which was definitely tunable. Both needed the HG-10 VFO to get away from being rock-bound. Perhaps it was the nerd

Re: [Elecraft] Measuring SWR (Long)

My friend Al has described some interesting things about SWR measurement here. But not all power/swr meters behave this way. In fact the Elecraft W2 meter is in this class. The designer added an ingenious little circuit to the diodes to bias them into their linear region. What the smeans is

Re: [Elecraft] K3 SignaLink & FT8 Question

This is close. As others have stated, two adapters are required. One is the Signalink (or other audio interface). The second is a serial adapter, preferably based on an FTDI chip. I believe it is the second you are really asking about. The serial adapter provides the actual control

Re: [Elecraft] Recommend a K3s foot switch

You know, I would be tempted to get a 1/4” female cord-mount jack and a cable with an RCA plug on it, shorten the end of the cable without the RCA plug (just to make a short adapter), slip on the connector housing, then solder the remaining cable to the 1/4” jack. That gives an adapter with

Re: [Elecraft] KPA500 failure

Don; Does the High Voltage look about right on the display? Do you still get the asterisk on the display when you key down? Give tech support a call in the morning. They will be best equipped to help you at this point. 73, Jack, W6FB > On May 12, 2019, at 6:54 PM, Don Roberts via Elecraft >

Re: [Elecraft] KAT Problems

Paul; When you transmit on either band, does the KPA500 display an asterisk on the left side of the display? This would indicate that the KPA is being PTT. If so, Place a wattmeter in the RF path between the transceiver and the KPA500. That should give a good indication as to the power getting

Re: [Elecraft] K3/KAT500/KPA500 integration question

Andy; Here is what happens. Again, K3, KPA500 and KAT500. All are connected using AUX cables as described in the KPA500 and KAT500 manuals. KPA500 is STBY, and KPA500 NOT in any fault condition. K3 is transmitting at 100 watts, user taps the Operate button on the KPA500. The KPA500 decodes

Re: [Elecraft] KAT500 question: using the KAT500 with multiple transceivers using a coax switch

No, but it does respond to frequency changes from the K3 which may provide some strange results. If the K3 is on and you spin the big knob while using the KWM2, the KAT will respond to the K3’s QSY. If you change bands on the K3, BOTH the KAT and the KPA will also change bands. And (most

Re: [Elecraft] K3 connectivity problem

Mike; What kind of computer are you using, and which OS? That will determine the proper answer to your questions. If a MacBook or MacBook Pro with a recent version of macOS, then the serial drivers are already built in, you just need to install the K3 Utility, connect the Serial USB adapter

Re: [Elecraft] Fan speed

What device is involved? There are many with fans. 73, Jack, W6FB > On May 29, 2019, at 10:17 AM, Richard Zalewski wrote: > > Is fan speed band dependent as well as temp? My fan was 0 but when I > switched to 6m it ramped up to 2 immediately. Usually anything under 45C > no fan but on 6m the

Re: [Elecraft] K3S glitching on startup

72 of the K3S Owner’s Manual, Rev A1. And if all that fails, try giving tech support a call. 73! Jack Brindle, W6FB > On Jun 24, 2019, at 9:07 PM, Frank O'Donnell wrote: > > This evening I used my new K3S for a normal session of FT8 (K3S connected to > computer via a sing

Re: [Elecraft] K3s USB failure?

Make sure that BOTH DE9 connectors are firmly plugged onto the P3. I ran not this situation myself over the weekend. The serial data needs to flow through the P3 and back to the K3S where it is then used. If one of the DE9s is not properly connected you won’t have a full path and the USB will

Re: [Elecraft] K3s USB failure?

ower > the radio down, and restart Commander or N1MM (or the K3 Util), it MAY work. > Or not. > > - pjd > > -Original Message- > From: Jack Brindle > Sent: Sunday, June 23, 2019 6:54 PM > To: Peter Dougherty > Cc: Bill Johnson ; Elecraft@mailman.qth.

Re: [Elecraft] RCA Connectors i.e Phono Plugs

Those are now known as “Jones” connectors. No idea why the change, but they are becoming very hard to get with demand dropping. Easy for us to work with, but they take up a lot of rear-panel space on equipment. 731 Jack, W6FB > On Apr 18, 2019, at 10:39 AM, Jim Brown wrote: > > On 4/18/2019

Re: [Elecraft] KPA-1500 input too high

They are going to want to know what is going on with the input power. The burned resistor (twice!) is a very good indication that there is indeed too much power flowing into the KPA’s front end at times. It is quite possible for any transmitter to put out more power than spec at times,

Re: [Elecraft] KPA-1500 input too high

RF to the on board frequency counter. This is on > the input side of the filter board. Maximum power I run on any band is 35 > watts. > > I am sure when the log file is reviewed it will show it is not spikes. > > Dave wo2x > > Sent from my iPad > >> On

Re: [Elecraft] K3S & K3s with newer I/O board

What are the values of the pulp resistors on the decoders, and what voltage do they pull up to? If 12V, the yes, you really need to worry about the 2.2K resistors and that 1K series. Even at 5V you may have to do so. Work the problem out on paper - simple ohms law. Then determine if the low

Re: [Elecraft] OT a bit: K3 Ant Tuner

9-07-05 1:55 PM, Jack Brindle via Elecraft wrote: > >> The external ATU takes care of the antenna matching, and should > > present a 50 ohm load to the BPF. > > This only hold true for the *single frequency* on which the external > antenna tuner is "tuned". Typic

Re: [Elecraft] OT a bit: K3 Ant Tuner

Lets step back a bit and look at the system here. The K3, with ATU, drives into the BPF, when then drives into the external ATU and finally the antenna. The external ATU takes care of the antenna matching, and should present a 50 ohm load to the BPF. The BPF, because of its design, should

Re: [Elecraft] OT a bit: K3 Ant Tuner

. As I stated earlier, I set my K3s to bypass mode for driving either my BPFs or my KPA500s. 73! Jack, W6FB > On Jul 5, 2019, at 12:56 PM, Gmail - George wrote: > > > > -Original Message- > From: Jack Brindle via Elecraft > > ... > > Now having said this

Re: [Elecraft] Cable for FSK-D

A Mortty will do a great job of conveying the ASCII data stream to Baudot, generating the FSK data you need. Then, take a look at N6TV’s Y-Box for an easy way to connect the data into the Aux IO connections. The Mortty is $18, available at: http://hamprojects.info/mortty/

Re: [Elecraft] All knobs at max ...

As was explained very carefully to us last fall before the election with that proposal, it would take a change in an international agreement for CA to go on full-time DST, so don’t hold your breath. Now, it that wasn’t true, it definitely wouldn’t be the first time the Sacramento politicians

Re: [Elecraft] KPA500 fan won't shut off

That means the power is not shutting off. We bleed off the capacitor charge through the fan at front panel shutdown, which is why you hear the fan run for normally a short time. Turn off the KPA using the rear pane switch and call tech support in the morning. They need to look into this one.

Re: [Elecraft] KPA500 fan won't shut off

The KPA runs a check on the memory contents when it starts up. If something has changed that should not, then it will ask for a fresh firmware load. Since Jerry is not seeing this, then I don’t believe there is a firmware issue. I _am_ concerned about the issue, which is why I suggest calling

Re: [Elecraft] KPA500 fan won't shut off

Dinner on Andy? Your analysis is spot on. When the KPA is requested to shut down it does some housekeeping, saving various things and putting the amp into a safe condition, including setting the 60V to off. It then sets the fan for full speed operation to bleed off the 60V power and waits for

Re: [Elecraft] When Transmitting on FT8 - KPA500 has issues - KD8ZYD

Fred sent me the video, which is actually very revealing. First the change rate is very rapid, higher than I initially expected. The asterisk is on constantly, and the power off time is not long enough for power to drop to zero. But what I found very interesting is that the output power

Re: [Elecraft] KPA500 PA current

Tell us a bit more about the antenna. How is it fed? Is it properly choked to eliminate RF shield current (this is current flowing on the outside of the shield. It is a bit early to remember the proper term…)? And, do you have chokes on the coax at the KAT500 or KPA500? I think we need a bit

Re: [Elecraft] KPA500 Coax size requirements

issues if they see any problems with the antenna system, usually in the form of high reflected power. Many hams use the units daily. We believe you will enjoy them as well! If you have any questions, just ask! 73, Jack Brindle, W6FB Elecraft Engineering > On Aug 20, 2019, at 12:11 PM, Car

Re: [Elecraft] KPA-1500 Power Output Variation

Jim; It would be interesting to see the source of the variance. You might insert the Bird between the transceiver and the KPA to see if there is any variance there. The amplifier has fixed gain - it has no ability to vary its gain during transmission other than a protective pad that is

Re: [Elecraft] KPA500 STBY to OPER

Maybe to the “Not quite as good as…” category. The issue is timing. Your code has to poll to determine the KPA op state, then start all the transitions which will result in the PTT line being negated. There are a lot of delays involved here. With the K3/KPA, the button press causes the KPA to

Re: [Elecraft] KPA500 STBY to OPER

Andy; It works very well. The op has to set the K3 so that the power is controller per-band. When the KPA is switched to OPmode, it sends a message to the K3. The K3 then switches to the amplifier selection for power, which the op has et specifically for the KPA. The converse is also true,

Re: [Elecraft] Sudden K3 failure

Perhaps the RxAnt is selected? Easy to do, easy to miss. Done it more times than I care to remember. 73! Jack, W6FB > On Jul 26, 2019, at 7:42 PM, Mpridesti via Elecraft > wrote: > > Sorry- did not fully see the problem > > The receiver is not working on any band not just 40. Sounds like

Re: [Elecraft] Elecraft K3S usb and USB data only cable

You would be far better off finding a USB cable with built-in ferrite to handle the small noise. The noise is most likely coming from the NUC as part of its USB polling regime, and being transmitted along the shield of the USB cable. Using the ferrite should eliminate this issue. You don’t need

Re: [Elecraft] KPA500 - KAT500 stopping K3 boot

Check your cables. It may be that you are using a straight-through cable with the power pins connected between the K3 and the KPA. These two pins (pin 8 on both sides) must not be connected. 73! Jack, W6FB > On Aug 8, 2019, at 1:05 PM, w4sc wrote: > > Is there an issue with the KPA500 being

Re: [Elecraft] KPA500 PA current

own wrote: > > On 8/4/2019 9:20 AM, Jack Brindle via Elecraft wrote: >> And, do you have chokes on the coax at the KAT500 or KPA500? > > I hope not -- to be effective, a choke must be that the antenna's feedpoint. > A choke on an antenna in the shack does no

Re: [Elecraft] KPA500 PA current

Andy; This is the effect of not being able to obtain perfect components. It is easy to forget that the toroid cores used for the inductors vary, as do the windings and capacitors. There will be variances because of this which will be different from KPA to KPA. They are set up for best case

Re: [Elecraft] KIO3B usb com port not communicating

Do you have BOTH plugs connected to the P3? You need to use the cable that has not one, but two DE-9 connectors - this allows the data to flow from the USB interface through the P3 and then back to the K3S. Without it, I would expect exactly the behavior you describe. In fact, I experienced

Re: [Elecraft] KPA500 - Advantage of min fan speed?

All you guys had to do was ask. When going down, the hysteresis is 3 degrees. That means that each threshold is shifted down 3 degrees. The hysteresis is necessary to keep the fan speed from bouncing up and down when the temperature is at one of the switch points. 73! Jack, W6FB > On Sep 30,

Re: [Elecraft] Keyboard compatible with P3/SVGA

I can attest that yes there is indeed Mac version of Logitech Options software. And I agree that the picture-based docs are not great. The Unifying receivers must be paired on the computer to one of the three keyboard selector buttons, then removed and plugged into the back of the P3. I also

Re: [Elecraft] KAT-500 remote control using serial port

David; Sorry I didn’t’t have the opportunity until now to answer your question… The answer is in the KAT500 Programming reference. You probably want to use 38400 bps, 8 N 1 to communicate with the KAT500, as is described in the Serial Port Overview section of that manual. The manual is

Re: [Elecraft] KAP 500 Remote ON/OFF Via AUX Conn

Do you have the rear panel switch on? Pin 8 is in parallel with the front panel pushbutton, so it will power on/off the KPA500 under the same conditions as the front panel power button. 73! Jack, W6FB > On Oct 31, 2019, at 12:35 PM, DAVID INGEBRIGHT wrote: > > I'm wanting to utilize the AUX

Re: [Elecraft] KPA 500 glitch

Jim; Check the AUXIO cable to make sure it connects to the K3S and the KPA500 (or KAT500) properly. This sounds like the Band1 signal may not be making proper contact. The KPA500 watches the K3S’s Band signals for its band selection when RADIO is set to K3. If doesn’t see the combination for

Re: [Elecraft] Update on Band Tracking

Be sure to check the pins on the AUX-IO cable connectors. The small DE-15 pins can easily be bent, and if so they may short to another pin or not make contact at all, causing the exact problem described. If they are bent, you may be able to carefully straighten them, but most likely you will

Re: [Elecraft] KPA500 SWR Calibration

Bob; The KPA500 does not use a Breune style bridge, but rather a true directional coupler. It does not need to be nulled; there is no adjustment. There is an adjustment for the power; see the PWR ADJ setting in the manual. 73! Jack, W6FB > On Nov 17, 2019, at 6:58 AM, Bob McGraw K4TAX

Re: [Elecraft] KPA500 SWR Calibration

I have >>> calibrated the indications for power and all is well in that regard. >>> I just see a higher SWR that actually exists. That under certain >>> conditions causes the amp to fault. I'll figure a work-a-round and >>> be able to deal with it. >&g

Re: [Elecraft] KPA500...standby vs. operate

The specific answer to your question isn’t in the hardware, but rather the firmware. With that in mind, going to STBY does the following: 1) Bypasses the TR switch, so that the signal path goes direct between the input and output RF ports. 2) Turns off the 60V power to lessen the load. 3) It

Re: [Elecraft] KPA500...standby vs. operate

the > second list of things? > > I have a K-Pod button dedicated to turning VOX on and off. > > Wes N7WS > > On 10/27/2019 11:54 AM, Jack Brindle via Elecraft wrote: >> The specific answer to your question isn’t in the hardware, but rather the >> firmware.

Re: [Elecraft] KPA500...standby vs. operate

ton dedicated to turning VOX on and off. > > Wes N7WS > > On 10/27/2019 11:54 AM, Jack Brindle via Elecraft wrote: >> The specific answer to your question isn’t in the hardware, but rather the >> firmware. With that in mind, >> going to STBY does the following: >>

Re: [Elecraft] K3S K-line cabling

em to operate as a single unit in 3 boxes. > Only thing I'd love to see is for the K3 "Tune" button to put the KPA500 in > Stby & Tune the KAT500. > > 73 > George AI4VZ > > > > > -Original Message- > From: Jack Brindle via Elecraft > &

Re: [Elecraft] K3S K-line cabling

Hi David! Great to hear form you... To expand a little on Don’s excellent info, The PC connection for both the KAT500 and KPA500 are mostly used for remote control and firmware update. While you can send data to them from a transceiver (usually Kenwood) to control things, for your situation,

Re: [Elecraft] KPA500 and KTA AUX Cable/Remote

Dave; You do not need the AUX IO cable. You do need to connect the PTT lines from the transceiver to the cat, then from the KAT to the KPA. Both KPA and KAT will work quite well with RF sensing for frequency. If you wish to add frequency control from the transceiver, you can connect both KPA

Re: [Elecraft] KPA500 fan won't shut off

JE182 {Q5}. > If this transistor shorts the fan runs at full speed. I didn't see a relay > in the circuit, but I could have missed it. > > 73 > > Bob, K4TAX > > > On 11/26/2019 3:29 AM, Eric Norris wrote: >> As Jack Brindle noted (and he would know), it appears to be a

Re: [Elecraft] KPA500 fan won't shut off

That won’t do any good. The main firmware has shut down at that point. The fan is running because the relay is stuck, which is not something that firmware can fix. Call tech support. 73! Jack, W6FB > On Nov 25, 2019, at 7:49 PM, Eric Norris wrote: > > Reload the firmware. > > 73 Eric

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