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Author Topic: Secure radio comms  (Read 1158 times)

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Offline Mark 79

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Secure radio comms
« on: January 26, 2022, 12:09:27 AM »
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  • Offline SkyRoam

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    Re: Secure radio comms
    « Reply #1 on: January 26, 2022, 01:37:58 PM »
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  • This was such an excellent video summary. Going to check out more on that channel. (pressed upvote button but it didn't work)

    Re: Geolocation avoidance - it seems he was speaking in the context of VHF/UHF point-to-point comms. However, it should be added that local/regional comms - while mitigating geolocation potential - can be had on HF frequencies as well, particularly with a NVIS antenna set-up. Noisier, but still OK. Moreover, working mainly data (especially one of the many obscure, mostly unused modes, e.g. Clover, AMTOR), instead of voice, helps in "encrypting" transmissions.

    There are so many things that be done to prevent outsiders from monitoring the comms of your group. Did an experiment last year: used an old AEA PK-232 TNC connected to a CB (27 MHz) to transmit packets, received on a old MFJ TNC connected to a Commodore 64 running a terminal program. Who would think that Packet would be used on Channel 19, the trucker's channel?! I really believe that older radio technology and methods (ca. 1970s-80s) will help in securing group/local communications in the years to come. 


    Offline Matthew

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    Re: Secure radio comms
    « Reply #2 on: January 26, 2022, 01:54:47 PM »
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  • If the balloon goes up -- the crap hits the fan -- all hams will have to do is start encrypting stuff. Using code words, and wantonly obfuscating their communication in various ways. Which is currently illegal.

    Non-hams, however, have a bigger problem. Yes, they have the same blank check to do whatever they want due to collapse of law & order. But the problem is -- being able to set aside LAWS is one thing. Knowing how to do stuff, having the right equipment, is another.

    Basically, in a collapse scenario, you'll be able to DO WHATEVER YOU WANT. But there's a catch -- you have to actually be capable of "what you want to do". For example, I can't run a 6 minute mile even though I might want to, because I'm not physically in that kind of good shape.

    Likewise, those with ZERO experience in radio won't suddenly become wizards of the airwaves, just because the government stopped breathing down their neck with laws. Let go of a helium balloon, it will head for the clouds. Let go of a chunk of rock, and it will go precisely nowhere.

    It's not just experience either -- it's equipment and supplies. How many ferrite toroids does the average person have? How much 50 ohm coax? Heck, forget exotic stuff, how about something as simple as WIRE? How many $13 metal poles, or long 2x4s that could be used to make a basic antenna mast? I shake my head internally at how poorly some people are prepared. Their homes are USELESS for anything but sleeping at night, watching TV, and sitting around to eat their takeout fast-food.

    P.S. It reminds me of various jokes: a doctor tells his patient "you will have to wear this cast for 2 months, to help set your broken arm." Patient: "Will I be able to play the piano?" The doctor: "I don't see why not." Patient: "Awesome! I always wanted to be able to play the piano."
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    Offline Mark 79

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    Re: Secure radio comms
    « Reply #3 on: January 26, 2022, 02:06:10 PM »
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  • This was such an excellent video summary. Going to check out more on that channel. (pressed upvote button but it didn't work)

    Re: Geolocation avoidance - it seems he was speaking in the context of VHF/UHF point-to-point comms. However, it should be added that local/regional comms - while mitigating geolocation potential - can be had on HF frequencies as well, particularly with a NVIS antenna set-up. Noisier, but still OK. Moreover, working mainly data (especially one of the many obscure, mostly unused modes, e.g. Clover, AMTOR), instead of voice, helps in "encrypting" transmissions.

    There are so many things that be done to prevent outsiders from monitoring the comms of your group. Did an experiment last year: used an old AEA PK-232 TNC connected to a CB (27 MHz) to transmit packets, received on a old MFJ TNC connected to a Commodore 64 running a terminal program. Who would think that Packet would be used on Channel 19, the trucker's channel?! I really believe that older radio technology and methods (ca. 1970s-80s) will help in securing group/local communications in the years to come.

    You may find some affinity here: https://amrron.com/

    Offline Mark 79

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    Re: Secure radio comms
    « Reply #4 on: January 26, 2022, 02:08:42 PM »
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  • If the balloon goes up -- the crap hits the fan -- all hams will have to do is start encrypting stuff. 


    AND defend against geolocation for any transmissions.


    Offline SkyRoam

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    Re: Secure radio comms
    « Reply #5 on: January 26, 2022, 04:13:15 PM »
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  • ...Basically, in a collapse scenario, you'll be able to DO WHATEVER YOU WANT. But there's a catch -- you have to actually be capable of "what you want to do".

    Yes, exactly... whatever you want, and whatever you want to do will be dependent on operator capability, needs and radio gear on hand. Still think that you need not be an expert in high level encryption (which am am not) and "get around", so to speak, with simpler approaches, lessening the probability of your communications being monitored.

    Also, yes, there will be the issue with non-hams, in terms of capability or even interest. Once encouraged my brother to get his license. His response: "Why? I have a cell phone". One solution I have come up with, and it is very simple, is for the ham operator himself (taking the lead) to make ready-to-go kits for use if the time requires. Using plastic ammo boxes, one has a couple of FRS/GMRS radios, with extra batteries chargers, earpiece - even with a couple of old smartphones - because these radios have texting capabilities (bluetooth link to radios). It's just a matter of including with the kit a page of simple instructions of how to operate, of what is contained in the kit etc. I have another one with a couple of handheld CBs, with appropriate coax, connectors, extendible antennas, and so on. Not the best, but it's better than nothing. For just receiving - and one does not necessarily have to TX all the time, in fact it is better to RX much much more than doing TX - I have another small radio with shortwave, VHF/UHF receive, AM/FM/SSB, with long wire for antenna, USB power bar, etc. Again, it isn't the best or most secure, but it is a start.

    In this situation it is the duty of the hammy to prep family/friends. Work with what you got, try a couple of practice runs.


    ...You may find some affinity here: https://amrron.com/

    Yes, checked them out before. Very good info over there. But I would like your opinion on these questions: Is it a good idea for such a large, geographically widespread prepper-type organization to be as such, especially in the times which we live... and broadcast widely over the internet? Would not such a group be better to be more local and discrete, so to speak? Perhaps it is a honey trap? The man who leads it is ex-military if I recall correctly. These thoughts have crossed my mind. Or maybe I'm just sounding like a crazy conspiracy theorist.

    Offline Mark 79

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    Re: Secure radio comms
    « Reply #6 on: January 26, 2022, 07:14:53 PM »
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  • While I enjoy the international reach of D-STAR, the necessary internet link won't outlast the coming time of troubles.

    For HT's I prefer our Yaesu VX8DR "all band" radios. They are now discontinued and I know of no comparable product.

    Offline Mark 79

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    Re: Secure radio comms
    « Reply #7 on: January 26, 2022, 07:31:08 PM »
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  • ...You may find some affinity here: https://amrron.com/

    Yes, checked them out before. Very good info over there. But I would like your opinion on these questions: Is it a good idea for such a large, geographically widespread prepper-type organization to be as such, especially in the times which we live... and broadcast widely over the internet? Would not such a group be better to be more local and discrete, so to speak? Perhaps it is a honey trap? The man who leads it is ex-military if I recall correctly. These thoughts have crossed my mind. Or maybe I'm just sounding like a crazy conspiracy theorist.

    Good questions. JJS is known, even travels openly, visited us here. Though a Protestant, JJS has been vetted as trustworthy by a trad I'd trust with my life or the lives of any of my family.

    Because he is known and every call sign is known there is indeed heightened visibility [risk] to being affiliated.  I took that risk because I think his project is worthy. He stimulated many, myself included, to push the learning curve. With the ease of voice, likely I would not have explored digital modes, but for the AMRRON digital nets that follow the voice nets. I would not have explored One Time Pads or met some good local folks.

    The relationships and network are established. The skills have been transmitted [pun intended]. SOI have been established "just in case." Certainly there will eventually be a transition… 'nuff said.


    Offline SimpleMan

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    Re: Secure radio comms
    « Reply #8 on: January 26, 2022, 08:20:03 PM »
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  • While I enjoy the international reach of D-STAR, the necessary internet link won't outlast the coming time of troubles.

    For HT's I prefer our Yaesu VX8DR "all band" radios. They are now discontinued and I know of no comparable product.

    You're killing me with that talk of fine radios!  All I have is a cheap little Baofeng HT.  Better than nothing.

    Offline Mark 79

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    Re: Secure radio comms
    « Reply #9 on: January 26, 2022, 08:24:59 PM »
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  • You're killing me with that talk of fine radios!  All I have is a cheap little Baofeng HT.  Better than nothing.
    The older Baofengs have an advantage that the Yaesu does not. The older Baofengs are already jailbroken to transmit on non-ham bands (the newer Baofengs are not).

    Our Yaesus can be  jailbroken, but removing the diode also loses some really convenient features like automatic duplex offsets.

    Offline Quo vadis Domine

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    Re: Secure radio comms
    « Reply #10 on: January 26, 2022, 08:31:05 PM »
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  • The older Baofengs have an advantage that the Yaesu does not. The older Baofengs are already jailbroken to transmit on non-ham bands (the newer Baofengs are not).

    Our Yaesus can be  jailbroken, but removing the diode also loses some really convenient features like automatic duplex offsets.

    How old is old regarding “the older” Baofengs?
    For what doth it profit a man, if he gain the whole world, and suffer the loss of his own soul? Or what exchange shall a man give for his soul?


    Offline SkyRoam

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    Re: Secure radio comms
    « Reply #11 on: January 26, 2022, 08:31:52 PM »
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  • Good to know that info about AMRRON. Thanks. Only a few members up here in the Northern Wastes.

    Was thinking of eventually trying D-STAR. Using DMR.



    Baofengs are fine and good. Mark makes a valid point. Any radio with transmit capability, not dependent on Government/Big Tech infrastructure, is an advantage. I have a CB in my truck.

    Offline bodeens

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    Re: Secure radio comms
    « Reply #12 on: January 26, 2022, 08:33:48 PM »
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  • Biggest problem with modding Yaesus is hurting your waterproofing.  Fantastic company though, although I have some Baofengs I own more Yaesu :)

    Using Raspberry Pis or Android phones is fine for encryption stuff, there's apps on the F-Droid repository for CW and you can just drag and drop encrypted comms to that and it just uses your headphone jack to interface with your radio. You can even use other messengers like Smoke and set up peer to peer filesharing etc. Smoke is great because it requires 0 infrastructure, it is designed to be used without internet so it's good for radio. I think a lot of preppers underthink how much p2p filesharing is going to change the game in any kind of situation where encrypted radio comms are normalized.

    I can highly recommend HackRF with PortaPacks, this SDR setup is a gamechanger is affordable and has some great programs built in :)
    Regard all of my posts as unfounded slander, heresy, theologically specious etc
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    Offline Mark 79

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    Re: Secure radio comms
    « Reply #13 on: January 26, 2022, 08:36:21 PM »
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  • The FCC advisory was issued September 24, 2018, but sales of "non-compliant" (jailbroken) radios continued for quite a while. I think the first "compliant" Baofeng I saw personally was in 2020.

    Offline bodeens

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    Re: Secure radio comms
    « Reply #14 on: January 26, 2022, 08:37:01 PM »
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  • The FCC advisory was issued September 24, 2018, but sales of "non-compliant" (jailborken) radios continued for quite a while. I think the first "compliant" Baofeng I saw personally was in 2020.
    HackRF PortaPack with the Chaos/Mayhem firmware is still sold on ebay too.
    Regard all of my posts as unfounded slander, heresy, theologically specious etc
    I accept Church teaching on Implicit Baptism of Desire.
    Francis is Pope.
    NO is a good Mass.
    Not an ironic sig.