[ale] [EXTERNAL] Re: Any ham radio operators among us? Linux in the shack?

Jim Kinney jim.kinney at gmail.com
Mon Oct 18 11:05:20 EDT 2021 


On October 18, 2021 10:18:15 AM EDT, Leam Hall via Ale <ale at ale.org> wrote:
>I have my license (KJ4JWR) but haven't done anything with it.
>
>Back in my USAF days, I was stationed in the UK. Some of the radio guys
>watched the Super bowl on an oscilloscope.


BWAHAHAHA! That made my day!


>
>Leam
>
>On 10/18/21 9:13 AM, Boris Borisov via Ale wrote:
>> I'm not one but back in army days watched guy receiving SSTV on Apple
>2 clone I thought is cool.
>> 
>> On Mon, Oct 18, 2021, 09:55 Allen Beddingfield via Ale <ale at ale.org
><mailto:ale at ale.org>> wrote:
>> 
>>     Up until recently, that's all I've had.  I've only recently
>started getting into HF (because I've only recently had the gear to do
>it!).  Much 2M repeater activity in your area?
>>     We are pretty luck in my area with a repeater on a very tall
>tower that covers multiple counties - sometimes even over into east
>Mississippi (I'm near Tuscaloosa, AL).
>>    
>https://www.repeaterbook.com/repeaters/details.php?state_id=01&ID=351
><https://www.repeaterbook.com/repeaters/details.php?state_id=01&ID=351>
>>     Allen B.
>>     --
>>     Allen Beddingfield
>>     Systems Engineer
>>     Office of Information Technology
>>     The University of Alabama
>>     Office 205-348-2251
>>     allen at ua.edu <mailto:allen at ua.edu>
>> 
>> 
>>     ________________________________________
>>     From: Ale <ale-bounces at ale.org <mailto:ale-bounces at ale.org>> on
>behalf of Jerald Sheets via Ale <ale at ale.org <mailto:ale at ale.org>>
>>     Sent: Monday, October 18, 2021 7:45 AM
>>     To: Atlanta Linux Enthusiasts
>>     Cc: Jerald Sheets
>>     Subject: [EXTERNAL] Re: [ale] Any ham radio operators among us?
>Linux in the shack?
>> 
>>     KO4JIL here.
>> 
>>     I’m much newer than the Elmer’s here. All I’ve got is an HT and a
>Mobile.  Shopping for a Base + Antenna right now, but I’m having to do
>the whole “put it in the attic” thing because HoAs suck.
>> 
>> 
>>     Jerald Sheets
>> 
>>      > On Oct 18, 2021, at 4:45 AM, Alex Carver via Ale <ale at ale.org
><mailto:ale at ale.org>> wrote:
>>      >
>>      > On 2021-10-17 22:52, Ben Coleman via Ale wrote:
>>      >> On 10/17/2021 11:15 PM, Allen Beddingfield via Ale wrote:
>>      >>> I was wondering if there are any other ham radio operators
>on the list?
>>      >> There are several.
>>      >>> If so, I'm curious what Linux applications you make use of
>in the shack for logging, digital modes, or anything else interesting?
>>      >> I'll have to admit that though I used to run Linux in the
>shack, nowadays I'm heavily into contesting, and I'm running Windows,
>as N1MM+ covers a lot more contests, out-of-the-box, than any Linux
>contest loggers I know of.
>>      >> Back when I was running Linux in the shack, I was using Xlog
>for daily logging, and tlf or yfktest for contest logging.  I was also
>a maintainer for the Alinco DX-77T section of Hamlib (Hamlib is a
>library for controlling radios, rotators, and other ham
>computer-controllable hardware.  Most Linux apps that need to interface
>with radios use it.
>>      >>> Also, problems dealing with RFI from PCs and power supplies?
>>      >> I'm using an Astron analog power supply, so I don't have much
>problems with RFI from the power supply.  I've mostly had to deal with
>RFI the other way, with RF in the shack affecting devices connected
>between the PC and the radio.  That's been dealt with by the selective
>application of cables with ferrite beads build in, or by the user of
>snap-on ferrites.
>>      >>> I've got a fairly new PowerSpec from Microcenter that jumps
>me from S3 to S9  of noise floor on 20m when switched on
>>      >> Some of that may be coming from cables from the computer,
>which might be handled by snap-on or wrap-around ferrite chokes
>(Palomar Engineers has a nice kit).  Some of my issues were helped by
>tying my radio and computer hardware to a common ground bus.  Also
>check the cables on the monitor.
>>      >
>>      > I've got loads of both linear and switching power supplies in
>and around the desk but I spent lots of time putting chokes on
>everything to keep it clean.  I also usually spend a bit more on the
>supplies.  Most of my switchers are DIN-rail mount units or similar
>industrial units that have filters in them and don't radiate much
>because they're intended to be in close proximity to other sensitive
>devices like PLCs.  Nearly everything at my desk that used to have a 5V
>wall wart is now sharing one of three 5V/10A DIN rail units. I have an
>enclosure at the end of the desk with a single C14 inlet with
>integrated magnetic filter (like this
>https://www.digikey.com/en/products/detail/schaffner-emc-inc/FN9260B-10-06/1929075
><https://www.digikey.com/en/products/detail/schaffner-emc-inc/FN9260B-10-06/1929075>)
>and terminal blocks that I use to wire appropriate patch cords to power
>the devices.  I did the same for a couple higher voltage items (mainly
>24V devices) and anything that
>>     was network related now runs PoE. I used to have over 40 wall
>warts and I'm now down to two because they're oddball voltages (one is
>7.5, the other is 15).
>>      >
>>      > I also usually put in ground breaks on all the audio lines
>between the radios and computers.  Most of my radios are patched
>through a couple Behringer mixers so I can route audio to different
>places (headphones, computers, speakers, etc.) but I find that a good
>portion of audio problems almost always stems from ground loops.  I buy
>the ground isolators intended for automotive applications and patch
>them inline with the radios.  The good ones are transformer units so
>you get galvanic isolation on the audio lines as well as the ground
>break.
>>      >
>>      > I've got three VHF/UHF stations and one HF station and no
>issues from my operating area.  Nearly all my noise is from the
>neighborhood coming into the antenna.
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>
>-- 
>Systems Programmer         (reuel.net/resume)
>Scribe: The Domici War     (domiciwar.net)
>General Ne'er-do-well      (github.com/LeamHall)
>
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Computers amplify human error
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