I'm looking for a radio that has the ability to be encrypted using an analog signal. My goal is to be able to talk in mountain areas without any trees or terrain interference. I have tried digital encryption in these areas and it doesn't work very well. Does anyone know of a handheld and base radio that will encrypt analog?
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Analog encryption
- Thread starter Deani
- Start date
Unless you're in Nebraska or Kansas, no matter what type of signal you use, you will inevitably have "terrain interference".
I'm confused. What does encryption have to do with signal attenuation from trees or terrain?
You posted this in the amateur radio forum. Using encryption/scrambling is not permitted by the FCC with the exception of "telecommand" of amateur radio satellites.
You need to give us some more information on how much range you are expecting. Topographical features are going to impact radio coverage unless you go down into the HF bands and bounce stuff off the ionosphere. If you are looking for a VHF or UHF radio to do this, you'll have some challenges.
Encryption doesn't impact range of the signal.
You won't find amateur radios that will do encryption or analog legally.
GMRS, MURS, FRS don't allow it either.
If you have a business type FCC license, you can run encryption/scrambling all you want.
As for which kind of radio, you need to give us more information:
What kind of FCC issued license do you currently hold, or are you willing to get?
What kind of range do you need? Be realistic about your needs, more range = more money.
What is your budget?
Right now I'm operating on a VHF channel. It does fine in the terrain I'm in as far as range. I would just like to know what options, if any, to be able to encrypt this channel. As far as budget, I don't care. I just wanna find a radio that will encrypt in the VHF bands.
As I noted in the first reply, encryption isn't allowed in the amateur radio service.
Is this amateur radio or some other service?
I have personally tested analog DES encryption on an old Motorola MX portable years ago. it was quite raspy, even at close range of a few hundred feet. i then tested digital encryption on some astro sabers, one pair used DES VESELP DIGITAL encryption and the other used P25 DES DIGITAL
the digital encryption was much clearer and maintained that clearness for the effective range of the digital signal, no different than running clear VSELP or P25
I wouldn't waste time screwing around with the old analog DES, it's a curious thing to play with but, not to actually have to listen to for use.
the digital encryption was much clearer and maintained that clearness for the effective range of the digital signal, no different than running clear VSELP or P25
I wouldn't waste time screwing around with the old analog DES, it's a curious thing to play with but, not to actually have to listen to for use.
Well, not sure what you mean by "VHF channel". If it's ham, you can't use scrambling/encryption, and some other ham will probably narc on you.
If you have a legit part 90 license, you can run all the encryption you want. Analog scrambling can be iffy out on the fringes. If VHF is working for you, then stick with that.
If you don't mind us asking, why do you need encryption?
RayAir
Member
- Joined
- Dec 31, 2005
- Messages
- 1,910
The only commonly available analog scrambling is fixed voice inversion.
Definitely not encryption.
I've used some of the Transcrypt 460 rolling code inversion boards in Vertex VHF radios before and they worked good outdoors. They provide a decent amount of privacy.
You'll be hard pressed to find any analog "encryption" worth the effort as they don't really make those products anymore. Transcrypt went away years ago. Midian is still around but they make sub par products. At least the TVS-2 is junk.
You could run TVS-2 scrambled audio through a fixed inversion descrambler and make out most of the conversation.
They sent me some audio samples.
If you tried digital encryption on VHF and it didn't work well outdoors then analog encryption won't really be any better.
Encryption doesn't impact range of the signal. , Yes it actually does when using analog modulation.
