Re: [Elecraft] Wire size for the ground on the KX2

On Thu,6/15/2017 1:27 PM, Mike Morrell wrote: Given the small size of the mini banana plug for KX2 ground connection, what size wire are folks using ; assuming ease of transport , etc. What is the purpose of this "ground connection?" The only reason for a connection to mother earth is for

Re: [Elecraft] Wire size for the ground on the KX2

On 6/15/2017 21:59, Fred Jensen wrote: RF current will be on the surface which scales as r-squared. Surface area is proportional to r, NOT r-squared. However, the inductance is much more important than the resistance. Larger diameter reduces the inductance, but not very fast, and in a

Re: [Elecraft] Wire size for the ground on the KX2

Use what fits. RF current will be on the surface which scales as r-squared. Obviously larger diameter make more surface area. If you're in the field, use what fits/what you have. You'll never notice the difference, ANY wire is better than no wire. It's really easy to fall into "Picking fly

Re: [Elecraft] Remote Operating Time Sync

Interesting, but don't see a way to feed/sync time with either a computer or the radio... __ Clay Autery, KY5G (318) 518-1389 On 6/15/2017 4:22 PM, Peter Pauly wrote: > I bought this for getting the time from GPS satelites while operating > remote...it's only about an inch

Re: [Elecraft] Remote Operating Time Sync

Personally, I think you'd be better served using Raspberry Pi approach. See the website I put down in my other post... Nah, here it is again... Do yourself a favor and read this guy's site... http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html __ Clay Autery, KY5G On

[Elecraft] [KPA1500] A/B antenna switch function

When the amplifier is *off* (from the front panel power control; mains AC on) what is the function of the A/B switch? Steve KZ1X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Remote Operating Time Sync

Yep... Build yourself a tiny little Stratun-1 NTP server using Raspberry Pi and a GPS receiver... Ideas: http://www.satsignal.eu/ntp/Raspberry-Pi-NTP.html __ Clay Autery, KY5G On 6/15/2017 2:12 PM, Marvin Wheeler wrote: > Jim: > > > > I would suggest a device that syncs

Re: [Elecraft] Remote Operating Time Sync

I should have mentioned that there is an obvious way to sync your clock for JT mode operation... per the spec: The JT65 protocol states that a transmission will begin at precisely 1 second into a new minute and end 46.811 seconds later. So if you have no time source and if you can't hear WWV and

[Elecraft] WTB: KX2

If you have one for sale please send details to include options included, serial number, pictures, and price shipped and insured priority mail to zip 45324.Must accept PayPal. ThanksTimNZ8J Sent from my Verizon, Samsung Galaxy smartphone

Re: [Elecraft] [Kx3][Kx2] AFX MD Delay

Hi Wayne. This post got me wondering: any chance the KX3's "Pitch" AFX mode can be implemented on the K3? My KX3 was my daily driver for a long time, but I upgraded to a K3 last year - dual receivers, etc., amazing rig... but I do miss that AFX "Pitch" mode... 73 Chris NW6V > >

[Elecraft] Seeking input on KPA1500 station configurations

Wayne/Eric, Maybe too late, I know, but I've been thinking about my ideal desk setup for HF/6m/2m and have come up with the following list of wants for the KPA1500 system: I'd like the KPA1500 power supply consumption to be less than 1W when the PA is "off". I'd like the power supply

Re: [Elecraft] Wire size for the ground on the KX2

The speaker wire I use is the insulated flat stuff ~16 AWG equivalent.  Rolls up into a nice small ball.  I put a alligator clip on one end and a ring terminal for the KX3. Mel, K6KBE From: Michael Walker To: donw...@embarqmail.com Cc: "Elecraft@mailman.qth.net"

Re: [Elecraft] Wire size for the ground on the KX2

If this is for an RF ground, you'll need bigger than 22G for it to be effective. Braid would be preferred. Mike va3mw On Thu, Jun 15, 2017 at 5:25 PM, Don Wilhelm wrote: > Mike, > > I would use #22 teflon insulated wire. Teflon because it is 'slippery' > and that can

[Elecraft] Seeking input on KPA1500 station configurations

Not sure if this has been suggested or not, but . . . . If you have plenty of room -- and you're not doing anything else(!), I think it would be interesting to have a PTT counter - a count of how many PTT closures during its lifetime. 73, Dan

Re: [Elecraft] Wire size for the ground on the KX2

Mike, I would use #22 teflon insulated wire. Teflon because it is 'slippery' and that can help with wire tangles. Thinner wire may be lighter weight if you are weighing fractions of ounces, but it is quite durable. Anything thinner becomes more fragile. IMHO that is a reasonable

Re: [Elecraft] Remote Operating Time Sync

Jim, it's all a matter of how long the JT software on the receive side / transmit side is written implemented. It's simply a window where your software is listening, there is nothing going on then then when to start listening and when to stop listening / when to start transmitting and when to

Re: [Elecraft] Remote Operating Time Sync

I bought this for getting the time from GPS satelites while operating remote...it's only about an inch wide and has a time display: https://www.tindie.com/products/PhoenixCNC/olediuno-gps-cube/ On Thu, Jun 15, 2017 at 5:14 PM, Josh wrote: > I just set this up at K6QXY's

Re: [Elecraft] Remote Operating Time Sync

I just set this up at K6QXY's place and it worked great. Accuracy is much better than what's required for JT65. We got a GlobalSat BR-355-S4 USB GPS receiver ($30) and a $20 software package from visualgps.net for Windows. I don't know of a MacOS version, but haven't looked. I expected to

Re: [Elecraft] Remote Operating Time Sync

Folks, thanks for the ideas! Tethering to my iPhone would work IF there was cell service. In many parts of Mindanao where we may go, the cell service is either spotty or nonexistent, so I would not want to rely on that. Also, WWV/WWVB/WWVH reception is not guaranteed. When I was there in April,

[Elecraft] Wire size for the ground on the KX2

Given the small size of the mini banana plug for KX2 ground connection , what size wire are folks using ; assuming ease of transport , etc. Thanks, Mike K8KE __ Elecraft mailing list Home:

Re: [Elecraft] Remote Operating Time Sync

Makes sense. Originally written for EME, that transit time is about 2.7 seconds if my math is close... 2*250K miles/(186k/s)... plus some processing moments, a few ms for amp relays. A larger window would be problematic. Rick wa6nhc/7 On 6/15/2017 12:28 PM, Jim Brown wrote: On

Re: [Elecraft] Remote Operating Time Sync

I have found myself in this situation. WSJT-X shows absolute time differences between your clock and remote stations. I takes me a little fiddling but I found I can adjust my computer clock manually to get the WSJT-X reported time differences down to less than a second. No Internet or external

Re: [Elecraft] Remote Operating Time Sync

On Thu,6/15/2017 11:59 AM, Matthew George wrote: The jt modes will be fine even if you are a second or two off. Two seconds is stretching it. I've seen very strong JT65 signals that don't decode with a time error of 1.7 sec! 73, Jim K9YC

[Elecraft] Remote Operating Time Sync

Jim: I would suggest a device that syncs with the gps system. I think it would be far more reliable to receive a signal than one from WWV with propagation the way it is. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

Re: [Elecraft] Remote Operating Time Sync

Tune in to wwv and synchronize your clock. The jt modes will be fine even if you are a second or two off. Or get a gps and synch to the gps clock via nema. Use google and search on all your options. You could setup nptd on your mac and use a pps signal from a gps too. Max Ng7m -- Matthew

Re: [Elecraft] Remote Operating Time Sync

Can you get internet by tethering to your phone? If so, the computer should sync with NTP pretty quickly, then hold to within a second while you are operating. You might be able to force a sync by opening the Date & Time control panel in System Preferences. MacOS uses NTP by default. If that

[Elecraft] Remote Operating Time Sync

I have a MacBook Pro Retina Display running Sierra 10.12.5 that I use with my KX3 when operating portable. Part of my operating is done with WSJT-X, for JT65 and JT9 modes. This software is very time sync critical - the computer clock needs to be within +- one second accuracy. Here at home on

Re: [Elecraft] A question about the KXPA100.

Grady, Is that "250mA at 30 V (max)" the listing in the rig's specifications? If so, it says that the rig's rating for its KEYOUT (or PTT Out) is the maximum it can tolerate without damage. It normally would be a closure to ground (either through a saturated transistor or FET or relay

Re: [Elecraft] A question about the KXPA100.

The KXPA100 has 5v on the key line and is activated by a closure to ground. Current upon closure is only about 1ma. You seem to make it sound like your radio has a voltage on the key out port, this would be unusual in modern rigs. Most rigs provide a closure to ground to key the amp. It seems