Re: [Elecraft] KX3/P3 external power source

LiPoly or LiFePO4 are both good, the LiFe seems to be a somewhat more stable and forgiving chemistry. I use a4S1P LiFePO4 with my K2. It has a very flat discharge curveuntil the end and then it drops rapidly, the K2 shuts down and the battery is protected from complete discharge. I can get a

Re: [Elecraft] K2 - No Menu - SOLVED -

Ed, OK, you can ignore my prior post. Yes, a mono plug will put the K2 into transmit. It does not allow many buttons to work when in transmit. I hope you had a load connected to it! 73, Don W3FPR On 6/7/2017 4:37 PM, Ed - ad7gr wrote: Solved... When I unplugged my straight key I was able t

Re: [Elecraft] Can KPA500 Operate Remotely?

Jack: One potential solution is to use the Remote Rig RC-1216H to control the KPA500 via a web page. See: http://www.remoterig.com/wp/?page_id=1010#tabs-3 These are available through Ham Radio Outlet in the US. I’m using two of the devices

Re: [Elecraft] K2 - No Menu

Ed, Is this an older K2, or has it not been used in some time? If so, it is probably the pushbutton. The MENU button normally does not get a lot of use, so it is one of the ones that show a problem. It can often be restored by tapping the button many many times, although replacing the pushbut

Re: [Elecraft] K2 - No Menu - SOLVED -

Solved... When I unplugged my straight key I was able to access the [MENU] again. The key had a 'mono' cable and plug attached and when I traded that out for a 'stereo' cord and plug the K2 operates as it should. It appears that the 'mono' cable and plug was the cause of the issue. 73, Ed

Re: [Elecraft] KX3/P3 external power source

I think a low voltage cutoff (or at least an alarm) with LiFe is a good idea, especially if you have other devices besides the radio directly connected to the battery, like a KX3, other 12v or USB-powered thingies, etc.. I currently use a Buddipole PowerMini which is a compact battery monitor,

[Elecraft] Fwd: Can KPA500 Operate Remotely?

Jacl, I have just knocked up a web based KPA Control program. I need about another 5-7 days to document and to test, and then I can post how too. You would need a) Remote Shack b) KPA 500 in remote shack c) Network connection with a public

Re: [Elecraft] KX3/P3 external power source

I don't think you have to worry about "C-rating" running a KX3. You are not drawing 20-80A, but more like 2-3A. As for low voltage cut off, you can set that in radio or use an external power /voltage meter to monitor it. -- View this message in context: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KX3/P3 external power source

Are there any internal resistance or c-ratings that I should be aware of? (Like there are on RC vehicles) Are Ham’s using any kind of low voltage cutoff with their batteries? Internal Resistance and C-Rating > On Jun 7, 2017, at 2:23 PM, Bob N3MNT wrote: > > Most people use the 4S LiFe vs Li

[Elecraft] K2 - No Menu

When I tap the [MENU] button on my K2 nothing happens, the menu is not accessed and the display continues to show the frequency. All other buttons work correctly. Tapping [MENU] brought up the menu this morning but not now. Just before this issue I had pressed [TUNE] thinking that I still

Re: [Elecraft] KX3/P3 external power source

Most people use the 4S LiFe vs LiPo as the fully charged voltage is closer to the KX3 requirements. A quick search for LiFe will show many discussions. As you use these for your RC stuff, you know the requirements and cautions so you should be good to go. -- View this message in context: http:

Re: [Elecraft] KX3/P3 external power source

FWIW, I'm using a Turnigy 7.2AN, 4S LiPo for the KX3 and KX2. Works fine, though at full charge it's a little high on the voltage. 73, matt W6NIA On 6/7/2017 10:29 AM, Matthew MacRoberts wrote: I need to work up a reliable external power source for my KX3 and P3. I also have RC aircraft an

[Elecraft] KX3/P3 external power source

I need to work up a reliable external power source for my KX3 and P3. I also have RC aircraft and cars… So a LiPo or LiFe battery is an easy solution for me. The battery would offer substantial weight savings and I already have the chargers and other equipment necessary to build the connection

Re: [Elecraft] K3 Power on via Aux connector?

Momentary assertion is preferred. While leaving it asserted (grounded) won't cause any particular issue, it won't allow the K3 to shut down (haven't tested this entirely). I use a USB controlled relay, assertion about 100ms to power on the K3, remotely. Rick wa6nhc/7 On 6/7/2017 8:36 AM,

[Elecraft] K3 Power on via Aux connector?

Some experiments with Pin 8 (POWER ON) show that if it is asserted (grounded per the Owner's Manual) it turns the K3 on just fine as expected. However if it is negated the K3 remains on. The Owner's Manual says it should remain asserted (grounded) until a PS0 command is sent before negating. Has

Re: [Elecraft] Can KPA500 Operate Remotely?

Yes Many options You can use an rs232 cable connected to a rs232/USB adapter on your desk computer. You can do IP, but you'll need a computer at the amp end and the operator end and use a LAN in between. You can also do serial over ip to your computer at the operator end with a rpi runnin

[Elecraft] Can KPA500 Operate Remotely?

Hi, Can a KPA500 be operated remotely, for example, in a different room from the operator? Specifically would such remote operations be possible via USB cable or additional hardware, or even via IP using additional hardware on the amplifier side. The need is to be able to switch remotely betwee

Re: [Elecraft] [K2] No signal at TP1 during Alignment and Test Part 2

Robert, Do you have a good signal at TP3? If so, ignore the PLL Reference oscillator and U4 for now. You need to get the VFO operating before doing anything else. Do the DC measurements a Q18. If you do not have a negative voltage at the gate, it is not oscillating. T5 is the most likely