Re: [Elecraft] P3IQ

Hello Wayne, are you still planning "to get it out of the box"? tnx Volker DL4ZBG -Original-Nachricht- Betreff: Re: [Elecraft] P3IQ Datum: 2018-07-28T18:45:02+0200 Von: "Wayne Burdick" An: "David Gilbert" To use the P3’s I/Q signals with software applications, you have to format the

[Elecraft] K3 with transverter on 144 operating FT8

Hello "Elecrafters", When I set the transverter output of the K3 to e.g. 0.4 mW in SSB or CW or FM, the output is constant and my output on 2m as well. But when I am operating in FT8 mode (WSJT-x latest version, ALC set to 4-5 digits) the output can be set to any value BUT starts to increase i

[Elecraft] HW-16 Re: Latest Elecraft NEWS

Hopefully not to belabor this too much (or exceed a cutoff on the conversation), the HW-16 was not a transceiver in the modern sense of shared circuitry throughout, but was a transmitter and receiver in the same cabinet that shared the same antenna connection and had the necessary cutoff and re

[Elecraft] F/S: Radiosport RS60CF Headset and Heil PR10 mic

F/S: RADIOSPORT RS60CF HEADSET with flex-boom Electret condenser mic, integrated PTT, and two cables for Elecraft K3/K3S allowing choice of using either the front panel 8-pin Foster jack or rear panel 3.5mm mic and headset jacks, also included are a foot operated and a hand operated PTT switch, al

Re: [Elecraft] LP-100 software

There are many alternatives for serial device servers... some software-based like VSPE which require a PC, and some hardware based like Lantronix, Digi and many cheap alternatives listed on Amazon. The hardware based ones just plug into your router at the remote site. Just make sure that the one yo

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

My station is a K3S, KPA500, KAT500.    The antenna is a 250 ft center fed wire with 450 window line that runs from the feed point on the antenna all the way to the operating position where the 450 line terminates into a 1:1 current balun on the shelf just above the amp and tuner.  I use a comm

[Elecraft] KAT500/KPA500 - Sanity Check Please

"Should the key line cables from the KAT500 to the KPA500 and the rig (using a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?" I'd suggest installing and running the KAT500 Utility. It will give a clear indication of whether the KAT500 is inhibiting the KPA500 key line (Op

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

Not necessarily.  That is true for purely resistive (real) loads, but for reactive loads with the same SWR the real part can be much different and may or may not be matched even at <10:1. Wes  N7WS On 1/26/2019 8:16 AM, Bob McGraw K4TAX wrote: ... A 10:1 SWR basically says the impedance is s

[Elecraft] KPA500 Assembly Help

I am nearly done building my KPA500 kit but not clear about one part of mounting the transformer. It came with 2 thin rubber disks and 2 thicker ones wrapped with the metal disk. The instructions call for 3 disks on the bottom and one on top. Do I put 2 thick and one thin on the bottom with a th

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 Br

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

Bypass SWR is the SWR of the antenna, measured with the ATU bypassed. The ATU does interrupt the amp key line when the bypass SWR is too high AND there is enough forward power to endanger ATU components. It’s a fault. At 3:1 bypass SWR the ATU can handle a kilowatt. At 10:1 bypass SWR the ATU

Re: [Elecraft] KPA500 Assembly Help

There is NOTHING like getting automatically an answer from the company and the person that designed the ampon a Saturday morning!    Thanks Jack. 73 Bob, K4TAX On 1/26/2019 10:56 AM, Jack Brindle via Elecraft wrote: Ah, but you came to the right place to get an Elecraft answer! Us

[Elecraft] OT: Yamaha CM500 headset mechanical issues

This list has discussed replacement of the ear-surrounding pillows. My CM500 is not very old, and the ear pillows are holding up fine. However, I recently hurt an elbow, and I am temporarily one-handed. While putting on the headset with one hand, I made one side of the headset catch on one side of

Re: [Elecraft] KPA500 Assembly Help

Thanks for quick reply. This is the reason I have always enjoyed owning Elecraft products. 73, Phil N3ZP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto

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

"The ATU does interrupt the amp key line when the bypass SWR is too high AND there is enough forward power to endanger ATU components. It’s a fault." Dick, I'd like to understand that a bit better. Are you saying that, with a tuning solution that gives 1.6:1, and with that tuning solution bei

[Elecraft] KPA500 Assembly Help

"The instructions call for 3 disks on the bottom and one on top." I had the same question when I built mine. I think I put 2 on bottom and 1 on top. Even that is tight for the bolt length. Elecraft actually has a mod kit with a longer bolt and more rubber discs. I don't know why that is no

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

Hi Bob: I'm using a very similar setup and forgot to mention the 1:1 current BALUN. The 4:1 is outside. There's about 2 feet of coax to a window feedthrough. Then from the feedthrough to the tuner is the 1:1 BALUN. The antenna is the 80 - 10 from trueladderline.com. Been using this model for years

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

Andy: If the RF power is high enough, and the bypass SWR is high enough, the ATU will fault and interrupt the amp key line. I’m away from the code right now, but we named this fault something like “power too high for bypass SWR”. This is distinct from another SWR-related fault when the matched

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

Thanks Dick. Info added to my KAT500 notes. The fault condition you mentioned appears to be fault code 2 - "Power Above Design Limit for Antenna SWR - Transmitter power exceeds the design limit for the unmatched antenna SWR. This power limit varies with the SWR of the antenna: 600 watts at 10:

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

The first of that type was, I believe a Hallicrafters SR-75, which was quite unique for its day. If I remember correctly, it was basically an S-38 receiver that used the audio output tube as a single stage crystal oscillator & RF out function. Not what you'd call a stellar performer, but it was a

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] KAT500/KPA500 - Sanity Check Please

Hi Jack... I hope you can prove me wrong and maybe there's a setup issue. The first symptom is, without the amp in line (standby or simply bypassed with a cable) everything works. With the amp in line, sometimes (very rarely) everything works but then all of a sudden the power out of the amp drop

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

You may be right on the KPA. This sounds like a TR issue. Call tech support on Monday and discuss it with them. In the mean time, I may be able to help further the diagnosis - use the KPA Utility to gather a fault log and send it to me. I have tools that will parse the info and let me know of any

[Elecraft] OT: S-38 / SR-75 trivia

In my Novice days many years ago I owned an SR-75. It was indeed an S-38 that used the audio output tube (35L6 or 50L6 (?) as a TX oscillator with a plug-in coil that was reached through an opening in the back cover. Had no way to measure the output power, but it wasn't much. The original S-38 (

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

Took a look at Heath's HW-16 design. Quite ingenious: Using the PA cathode bypass capacitors and current through a diode to shunt the receiver front end during transmit. Early diode QSK operation. And a neon bulb relaxation oscillator, using grid block keying voltage, for CW sidetone. I enjoy putt

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

Speaking of 110VAC antenna relays, I reached in the back of my Novice rig and touched the bare 110VAC contacts on the antenna relay. Youch! I was a little more cautious after that. Bare contacts wouldn't be allowed today in commercial gear. 73, -John NI0K John Oppenheimer

[Elecraft] Halicrafters S-38

The S-38, like many BC receivers at the time, was an "AC/DC" rig, with the chassis potentially hot if you weren't careful. Nearly eliminated myself in the basement trying to attach a Q-multiplier to it. This was better than 60 years ago. George, W3HBM On 1/26/2019 7:38 PM, John Simmons wrote

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

Back in those days, Novice class licenses were required to operate with crystal control.  You learned to tune at least 10 kc/s (kHz came later) each side of your frequency after calling CQ.  Novice segments were on 80/40 and 15m CW only.  2m AM and CW was also allowed. Rigs in those days did no

Re: [Elecraft] HW-16 Re: Latest Elecraft NEWS

You learned to know your rig and when to be careful.  As a teenager,  I had a 2700 volt open breadboard power supply. Ken WA8JXM On 1/26/19 7:38 PM, John Simmons wrote: Speaking of 110VAC antenna relays, I reached in the back of my Novice rig and touched the bare 110VAC contacts on the antenna

[Elecraft] Reminder: Winter Field Day (WFD) going on right now...

Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 kHz. If you're not feeling adventurous, just operate from home and sign "1H ". Have fun! Wayne N6KR > On Jan 24, 2019, at 8:01 AM, Wayne Burdick wrote: > > If, like me, you feel like one field day a year is not enough,

Re: [Elecraft] Reminder: Winter Field Day (WFD) going on right now...

I was doing just that on 40 this afternoon. I felt like a BIG GUN with my K3s/KPA500. Great fun. Michael Blake k9...@mac.com > On Jan 26, 2019, at 8:34 PM, Wayne Burdick wrote: > > Quite a bit of activity right now in WFD, especially 40 m SSB around 7200 > kHz. If you're not feeling adven

[Elecraft] Elecraft CW Net Announcement

Good Evening, Please join us tomorrow on: 14050 kHz at 2200z Sunday  (2 PM PST Sunday)  7047 kHz at z Monday  (4 PM PST Sunday) 73,    Kevin. KD5ONS - __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecra