Recent posts

#71
General Discussion / Re: Which radios
Last post by KE5ES - December 16, 2022, 02:27:52 AM
Yaesu FT-817ND.  I own a few radios but the 817 is my Baby.  I bought it for the all modes all bands features.  I have talked to multiple continents and love using it.  I just ordered a 1296 mhz transverse to use with it.  It is just a handy radio to have.
De KE5ES
#72
General Discussion / Raspberry Pi update
Last post by KE5ES - December 13, 2022, 11:36:08 PM
I was trying to update my Raspberry Pi the other day.  It came back with a "you're running an out of date system" error.  I imaged a new micro SD card and inserted it.  Finally someone did something right.  Plug and play all the way through the setup.  Super fast also.  I took the old card and reimaged it for my other Pi.  I just have to get it running with the digirig and 817nd.
#73
General Discussion / Crypto donations.
Last post by gil - November 28, 2022, 06:59:28 PM
Hello Guys :-)
So I waited that I received the next hosting invoice (paid) for the site to post this info so I don't feel guilty! If you have any crypto, please consider helping out by sending a few bread crumbs to any of the following addresses:

BTC   bc1qc5jq4dxt7359sh80lkv9v8rlsgnh322hmn6xyc
ETH   0xe7cC2e415E0D2d1De91604B2b693f124dfBCf9B8
DOGE   D6ha2Ax7UhmtEMPC4fsaEJPxHrLSu3BwYW
XRP   r93TuQrkEq3X9UDkqXKYWaTkteB2ap4hMq
LTC   LYwDy55mZSeb1Czx6JUiTS5YkqjfmWKK5H
SOL   Ee9iJx6ouBih1beozjWrwYBQA9tQgr4nYwosZYsjfxaj
TRX   TMvoMDkc2YJybCSk1SNYjW6wFbktZ8qoNA
DOT   14BeKCDq3FSvtF4k9i1n4DyqZbYTT9HMt1kxemQmkjkVeKZB
AVAX   0xe7cC2e415E0D2d1De91604B2b693f124dfBCf9B8
ATOM   cosmos1l8ct3kesrh48n2yeekh9e2ncrm8s397xxwf34f
ALGO   ZI3QSV4UV3KT6JFN4TUWO2TWEM46MQENXW3RTLQEH4OLSSY2SONYKR7XCM
XTZ   tz1YS3MSqU63VKGkUqomt1ZV4eDFY7dJD9mX

Thank you very much!
Gil.
#74
General Discussion / Re: PLEASE READ! Welcome to Ra...
Last post by gil - November 28, 2022, 06:55:32 PM
Thank you Steve for signing on!

Gil.
#75
Tactical Corner / Re: Sending Encrypted Messages...
Last post by gil - November 28, 2022, 06:53:37 PM
Excellent post as usual Ray!
Gil.
#76
General Discussion / Re: PLEASE READ! Welcome to Ra...
Last post by KE5ES - November 27, 2022, 08:48:12 AM
Hello my name is Steve and I'm an addict.  I started with a Baofengs and over the years I have progressed to the hardcore stuff, Elecraft.  My radio of choice though is the Yaesu FT-817nd withe a Buddistick vertical.  I found the YouTube channel that led me here.  Thanks Gil for hosting this forum.
#77
Tactical Corner / Re: Sending Encrypted Messages...
Last post by RadioRay - November 26, 2022, 01:58:08 PM
With this entire FASCINATING discussion, there are two , basic,  questions:

"What is your threat model?"
and "
"What information are you transmitting/receiving?". 

If you need to work against a major national power during time of war, it's entirely different from working against your neighborhood kid with a radio scanner. If the information you're passing would fit on a sticky note, a short text encryption method, using paper and pencil is fine.  OTOH, if you're sending 2 megs of battle plans in PowerPoint,also against a nation's security apparatus, that's an entirely different problem.

For the low level survivor coordinating with similar groups, against a nation state enemy with significant electronic warfare capabilities (Ukraine vs Russia), messages need to be short, extremely secure and rarely transmitted. The system keys must be 'incoherent' that is to say random and NOT REPRODUCABLE.  A major killer of intel agent networks in WW II was decrypting back traffic.  If England dropped - Agent A - into France to set-up a resistance organization, safe houses and perons of contact, then he transmitted that all back to England using a MEMORIZED key, WHEN when the Germans eventually capture England's Agent A, they use "practical cryptanalysis" that is; torture the cipher system details and memorized key ouf of Agent A and roll-up the entire network using his testimony and all back traffic (or, as in the Nederlands, they 'play' the network against England for much of the war.).

If YOU being Agent A can recall the system and it's keys to read back traffic, then it's not a one time pad.  If you're using a book, periodical or The Bible for key material, it's not a one time pad. 

So - for a pencil and paper, one time pad it's best used for :
1. Highest security requirement for never being broken.
2. Low volume of traffic, all text.
3. Once the key is destroyed, there is essentially zero opportunity to read actual back traffic.

Remember, if you use a system where you or anyone else can memorize the key, it's not truely a one time pad, for as long as any of you live, and this information will be taken from you by the most extreme means, upon first opportunity of the enemy.

OTOH - I know people so dull, that writing a note in longhand (cursive) might as well be enciphered, because they're functionally illiterate...


73 de RadioRay  ..._ ._

#78
Tactical Corner / Re: Sending Encrypted Messages...
Last post by KE5ES - November 23, 2022, 02:41:22 AM
Five 9 sided dice are a great random 5 number generator for one time pads.  Time consuming but there is a company that produces OTP machines that are stand alone.  https://www.partisanlabs.com/
#79
Batteries & Solar / BMS
Last post by 2M0WHN - November 22, 2022, 10:57:06 AM
Anyone got any idea for a BMS?

Just purchased some 18650's and wondering what type of BMS I would need to use for this project. Hopefully one that can charge from a small solar cell or two that I have laying around so it can be left out to charge or from mains.

Anyone got any links to Aliexpress, UK Ebay or Amazon to get me started prior to soldering.
#80
Antennas / Re: "Sparkplug" antenna
Last post by KE5ES - November 18, 2022, 11:44:14 AM
I was looking for a battery the other day in a backpack and found five antennas I forgot I built.  The sparkplug is nestled in with my Yaesu FT-817nd and works wonderfully.  You just have to cut the wire correctly.