Re: [Elecraft] KPA1500 duty cycle

The FT8 parameters were tweaked slightly during the beta phase prior to the release of WSJT-X 1.8.0, and the TX time was reduced to 12.64 sec, so the duty cycle is now about 42%. 73, Richard G4DYA On 15/02/18 01:22, Dennis Moore wrote: > Specification is 13.48 sec TX, 16.52 sec RX, 45% Duty

Re: [Elecraft] FIRST TIME HOOKUP OF N1MM+ TO K3 VIS MICROHAM USB INTERFACE III

A little more info. The K3 and K3S default to 38400 bps on the serial port. This can be changed in the configuration menu, and you should verify the setting in the menu system. If it is still set to the default, set your PC for 38400 bps (and the MicroHam device as well, then give it a try.

Re: [Elecraft] FIRST TIME HOOKUP OF N1MM+ TO K3 VIS MICROHAM USB INTERFACE III

Yes, I believe the baud rate is the problem. Should be 38400. de VK2HHS On Fri, Feb 16, 2018 at 12:57 PM, Jack Brindle wrote: > A little more info. The K3 and K3S default to 38400 bps on the serial > port. This can be changed in the configuration menu, and you should

Re: [Elecraft] FIRST TIME HOOKUP OF N1MM+ TO K3 VIS MICROHAM USB INTERFACE III

Rick, Thanks for advice on Utility. I downloaded and ran but still no joy. I did see FW rev 05.38. I don’t know if that cud be the problem? Greg Best Sent from my iPhone > On Feb 15, 2018, at 9:31 PM, Rick Tavan wrote: > > You got good advice on baud rate. Also, it's wise

Re: [Elecraft] FIRST TIME HOOKUP OF N1MM+ TO K3 VIS MICROHAM USB INTERFACE III

You got good advice on baud rate. Also, it's wise always to confirm proper operation with K3 Utility first. If it doesn't connect, chances are N1MM won't, either. Utility marches through speeds until it finds one that works. MM requires a specific speed setting. 73, /Rick N6XI Rick Tavan

[Elecraft] KPA1500 on AM

How well will the KPA1500 do on AM during very long-winded QSOs? I currently use my KPA500 on AM and it does fine - albeit a little noisy in the fan department. For information only: The K3 garners excellent audio reports on AM. Bill W2BLC K-Line

[Elecraft] KPA1500 duty cycle

RTTY contesting has a much higher duty cycle, especially when using a single radio and no one is answering your CQs. John KK9A On Feb 15 03:51:39 G4DYA wrote: The FT8 parameters were tweaked slightly during the beta phase prior to the release of WSJT-X 1.8.0, and the TX time was reduced to

Re: [Elecraft] KPA1500 on AM

On 15/02/18 11:12, Bill wrote: > How well will the KPA1500 do on AM during very long-winded QSOs? I > currently use my KPA500 on AM and it does fine - albeit a little noisy > in the fan department. For information only: The K3 garners excellent > audio reports on AM. To prevent flat-topping at

Re: [Elecraft] OT: USB and LSB - How we got there

In 2003 I researched the subject for my RSGB Q column, 'In Practice', and was fortunate to be in contact with some amateurs who were personally involved in the decision to switch sidebands at 10MHz. This decision was made in April 1952 and eventually became an IARU standard - but its origins are

Re: [Elecraft] OT: USB and LSB - How we got there

Clarification: W2KUJ first published the design concept for a 20/80m SSB exciter using 5MHz SSB generation and a 9MHz VFO, in QST for June 1948. W1DX then expanded W2KUJ's block-diagram concept into a practical design for others to copy, and this was published in January 1949. 73 from Ian

[Elecraft] Wanted: Your RFI P3 images...

Hello, If you have any images of RFI taken using your P3, and you know for sure what caused the RFI please send them to me OFF LIST for the RFI snapshot page at: https://www.nk7z.net/rfi-snapshots Please be sure to include what caused the RFI, and if you have an audio clip please add it as

Re: [Elecraft] KPA1500 duty cycle

And you can affect duty cycle by adjusting the cw repetition rate. If it gets too hot increase the delay. Sent from my iPhone ...nr4c. bill > On Feb 15, 2018, at 7:39 AM, "j...@kk9a.com" wrote: > > RTTY contesting has a much higher duty cycle, especially when using a > single

[Elecraft] KPA1500

Just to let everyone know that KPA1500 #29 is now on my desk hooked up and will turn it on after I read the manual. Ed. AB4IQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] KPA1500 duty cycle

Easy to handle for the 1500 on any band. :-) 73, Eric /elecraft.com/ On 2/15/2018 12:51 AM, Richard Lamont wrote: The FT8 parameters were tweaked slightly during the beta phase prior to the release of WSJT-X 1.8.0, and the TX time was reduced to 12.64 sec, so the duty cycle is now about 42%.

Re: [Elecraft] KPA1500 duty cycle

The KPA1500 can handle 1500W RTTY contest operation with no problem. Same for CW. (One of our Field Testers is W0YK. See his review on eHam.) 73, Eric /elecraft.com/ On 2/15/2018 6:48 AM, Nr4c wrote: And you can affect duty cycle by adjusting the cw repetition rate. If it gets too hot

Re: [Elecraft] OT: USB and LSB - How we got there

The 5.2 MHz SSB exciter construction article that Ian referred to in January 1949 QST is here: http://p1k.arrl.org/pubs_archive/29327 73 Frank W3LPL - Original Message - From: donov...@starpower.net To: elecraft@mailman.qth.net Sent: Thursday, February 15, 2018 5:17:57 PM

Re: [Elecraft] KPA1500 on AM

Agreed. AM with carrier set properly to 25% of peak power (1500 * 0.25 = 375 W max carrier ) is no strain for the 1500.  With the normal variations of the AM speech envelope between the 235 W carrier and the peaks at 1500W, the amp is loafing along at any key down time.  :-) Eric

Re: [Elecraft] OT: USB and LSB - How we got there

Thanks Ian, very interesting reading! http://p1k.arrl.org/pubs_archive/28966 73 Frank W3LPL - Original Message - From: "Ian White" To: elecraft@mailman.qth.net Sent: Thursday, February 15, 2018 11:27:15 AM Subject: Re: [Elecraft] OT: USB and LSB - How

Re: [Elecraft] OT: USB and LSB - How we got there

I have a vague recollection from the early 50s [all recollections from then are vague] that sideband generation at 5 MHz became popular as phasing rigs began to give way to filter rigs and for some reason, crystals in the 5 MHz region were more plentiful and cheaper. ???  The "9 and 5" scheme

Re: [Elecraft] OT: USB and LSB - How we got there

Members only. Regards, Mike VP8NO On 15/02/2018 14:37, donov...@starpower.net wrote: The 5.2 MHz SSB exciter construction article that Ian referred to in January 1949 QST is here: http://p1k.arrl.org/pubs_archive/29327 73 Frank W3LPL

[Elecraft] FIRST TIME HOOKUP OF N1MM+ TO K3 VIS MICROHAM USB INTERFACE III

I am trying to get N1MM+ to talk to my K3 but will not do it. I am setup for 4800 B, Data 8 bits, Parity N, stop bits 1. DTR and DTS have been tried with both Always ON and Always OFF but neither one works. I have tried the Radio reset command from N1MM+ with no luck. Can anyone help? 73¹s

Re: [Elecraft] FIRST TIME HOOKUP OF N1MM+ TO K3 VIS MICROHAM USB INTERFACE III

Try 38400 instead of 4800. Jack, W6FB > On Feb 15, 2018, at 5:33 PM, Greg Best wrote: > > I am trying to get N1MM+ to talk to my K3 but will not do it. > > I am setup for 4800 B, Data 8 bits, Parity N, stop bits 1. DTR and DTS have > been tried with both Always ON