egprentice

I've been reading the Marlin documentation, and it is clear that it is a superset of what the Ender-5+ can do. Where can I get a list of what GCodes work on the ender-05 and which don't? I'm imaging a list of GCodes that dowork, or a list of the Capabilities that are described in the Marlin documentation.

Today I sent a letter to the ARRL with my second attempt at 10wpm #CW code qualification. My initial attempt was returned with a very nice letter from ARRL saying I did well, to keep practicing, and to copy the qualifying code next time instead of the practice code. 😎

I understand that phased arrays require accurate time synchronization between each Rx element in order to do beam steering and Direction Finding. What I don't understand is the precise relationship between the accuracy of the timebases and the highest frequency. For instance, if I wanted to receive a 1 MHz signal across many array elements, how closely do the elements time bases have to be synchronized? Or to ask it a different way, if I have all Rx elements synchronized within 1 msec, what's the highest frequency I can handle? What is the relationship between time accuracy and usable frequency?

My son (licensed) was just given a working ICOM IC-211 2m Transceiver. He has a J-pole antenna and is able to hear local repeaters, but due to the lack of CTCSS encoding, cannot hit the repeaters on transmit. We're thinking the solution is to buy a CTCSS encoder board and wire it into the IC-211. Decoding should not be necessary. It should allow the selection of the tone, ideally displaying the current tone frequency. We're looking for suggestions on what encoder board to buy, and how to install it. Has anyone done this with an IC-211 or similar radio of that age ('70s)?

While waiting for my MacBook Pro to update to the latest OS version 11.2.2 earlier tonight, I wondered if there was a way to get a notification on my AppleWatch (series 6) when the install is complete and the MBP has rebooted. Is there a way to use a "shortcut"? I'm looking to do this without buying an app. I'm imagining some program that runs once at startup that makes status available to the watch, whereupon the watch notifies me either visually, audibly, or haptically (preferably with a way to select any combination of the three). I'm looking for step by step instructions for how to set it up. Any ideas?

I see that there are three ways of using the taptic interface to tell time, including morse code! I'm wondering if it is possible to create a Watch Face that would use the taptic interface to signal half-hours like a ships bell. For instance, 01:00 is two bells, 03:30 is seven bells. Ever four hours it starts again, so four bells is either 2:00 or 6:00 or 10:00. The assumption being you can usually tell which of the three ambiguous times it is.

What's the best way to search for a local installer? I live in Charlotte, NC and unable to climb to the roof of my house to install the dish. Ground installation not possible due to lots of trees. Also, what might I expect to pay for someone to mount it on my roof?

I have a vague recollection of reading about someone using multiple receive-only antennas of different types at the same time in order to reduce noise. I can't find a reference to an article. How would you combine the RF signals in order to feed a receiver normally? Did I dream this?

https://singularityhub.com/2020/08/30/new-zealand-is-about-to-test-long-range-wireless-power-transmission/

https://singularityhub.com/2020/08/30/new-zealand-is-about-to-test-long-range-wireless-power-transmission/

Is there an open-source program to implement a SWR meter using RTL-SDR?

Consider giving three people partial safe combinations such that any two can open the safe.
For instance, person one gets the second and third numbers, person two gets the first and third, and person three gets the first and second. For longer combinations, follow the same pattern for each set of three, (e.g. a twelve-number combination). Any two can open the safe without the third.

My challenge is to take that one step further so that any three of N people will be able to open the safe without any help from the others. Assume a long combination of twelve numbers required to open the safe. How do I go about deciding which numbers to hand out to the N people? Also, what is the smallest N

Keybase proof

I hereby claim:

• I am egprentice on reddit.
• I am egp on keybase.
• I have a public key ASAxuEBPMvgooY1c9UJWD7BSawUZHuKTv2vw0OM8O6P-yAo

To claim this, I am signing this object:

{
    "body": {
        "key": {
            "eldest_kid": "01013f28a98856797067787f83c7f07f489a2b1e076c5dea5152dc69ca1c0144f6ee0a",
            "host": "keybase.io",
            "kid": "012031b8404f32f828a18d5cf542560fb0526b05191ee293bf6bf0d0e33c3ba3fec80a",
            "uid": "ec8da3caec57105144afbe95bbf1ec00",
            "username": "egp"
        },
        "service": {