motorolla to boafeng UV-5R V2+

[rigaud0520]

so i can receive frequencies from my boafeng but cant send them back this is for a company i work for. what the only thing i can think of is that the dpl octal code is 677. is there an equivalent on boafeng? the reference frequency on the Motorola sheet is also set as "default" so is there something there?

 

[nhfdcadet]

so i can receive frequencies from my boafeng but cant send them back this is for a company i work for. what the only thing i can think of is that the dpl octal code is 677. is there an equivalent on boafeng? the reference frequency on the Motorola sheet is also set as "default" so is there something there?

does the baofeng have a frequency offset programmed?
DPL's are the same regardless of manufacturer

 

[com501]

You do realize the Bao is not to be used in commercial applications, right? Is your employer OK with accepting the liability of an FCC fine if caught?

 

[rigaud0520]

does the baofeng have a frequency offset programmed?
DPL's are the same regardless of manufacturer

I programmed different offsets and it didnt seem to make a difference. It is keying up but not making any sounds.

 

[rigaud0520]

You do realize the Bao is not to be used in commercial applications, right? Is your employer OK with accepting the liability of an FCC fine if caught?

Thank you for your input Im an enthusiast and trying to get a better understanding of how these things work. What would be your suggestion on the license i would need to pursue this hobby. Keep in mind im not trying to interfere with any operations.

 

[ramal121]

Whoa, back up. Are you using simplex frequencies or are are you trying to go through a repeater?

 

[rigaud0520]

Whoa, back up. Are you using simplex frequencies or are are you trying to go through a repeater?

No repeaters involved. Just radio to radio.

 

[DiGiTaLD]

You may need to use inverted DPL..

 

[rigaud0520]

You may need to use inverted DPL..

How would I do that?

 

[ElroyJetson]

Years ago I spent the time to analyze all possible DPL codes using an R2670B service monitor and an XTS5000.

I discovered why there are DPL codes that are not on the "valid codes" list. It's because there are quite a few cases where an invalid code can be generated (the R2670B allows all codes from 000 to 777 to be generated) will alias to other valid DPL codes. I found that in some cases, as many as three valid codes may alias from a single "invalid" code.

Put simply, there are no "missing" codes in Motorola's standard list. The list they provide is all valid codes that there are. The ones not listed will alias to other codes.

Importantly, the ones on Motorola's standard DPL code list DO NOT alias to any other codes on that list. That's very important to understand.

As I recall, I did not find a single code NOT found on the Motorola list that satisfied the criteria of a useful DPL code, namely, that it has no alias codes. There ARE codes not on the Motorola list. They ALL alias to one or more other codes.

For those who don't know, "aliasing" is when a code triggers a detector set to a different code. When you receive transmissions not intended for you because of it. When your DPL receive code is 714 and you pick up 563 as well. (Just making up those codes...I don't know if they alias or not, or if they're valid.)

Now, as for that Baofeng....it's worthless trash. And illegal to use on commercial frequencies. If that offends you, be assured, I don't care. I speak the truth as I see it and as I have found it to be over a period of more than 30 years of involvement in the field of radio communications as both a hobbyist and as a professional technician.

 

[rigaud0520]

So the end goal here was to potentially do a crosslink through zello for expanded projects with other in company departments. Is there a brand or specific radio you might recommend. I get that it's trash thats more or less why I bought it just trying to understand the radio world.

 

[ElroyJetson]

It might be helpful if you were to define the parameters of the project more concisely. Paint a picture of the RF scenario as it is now and as you want it to be post-project.

As for brands, in this particular forum, you can understand why you would expect Motorola to be recommended. But even then...we need more information. Right now you haven't even stated whether the radios at interest are VHF or UHF and whether or not they're analog or digital, and if digital, what format. DMR? P25? And if you don't KNOW, you have no chance of approaching success until you find out.

 

[merlin]

Baofeng doesn't input octal for DCS. the matrix equal is 447 (decimal) the closest 'standard tone is 446.
If I program a non standard entry, the software reverts to the nearest standard code.
I think Motorola accepts anything from 21 to 755.
Like others said, pick up a cheap Moto and program it for your needs.

 

[ElroyJetson]

A quick expansion of my previous comments about DPL codes: The ones that have aliases all have identical pulse trains. (Identical to another code that it aliases to. Such as, for hypothetical examples, 113, 272, and 407.) It's just a matter of where the train starts and stops. The DPL decoder doesn't KNOW where it's supposed to start and stop. So if it sees the right pulse train, ANYWHERE in the data, then it opens squelch.

Whether the train is 1001111100110110 (repeat) or 0011111001101101(repeat) or 1101001111100110(repeat) they all look the same to the DPL decoder. That's why they alias. Those trains I just wrote are just representational, and are NOT in the actual DPL signalling format. Just to be cler about that.

There are no sync bits. That's the issue that allows aliasing.

From Genave.com:

Digital Coded Squelch
DCS is also known as Motorola Digital Private Line – “DPL “

DCS is a digital form of CTCSS. Instead of sending a continuous audio tone however, it transmits a low level digital signal.


DCS sends a fixed octal digit 4 as the first digit, followed by the three octal digits shown in the table


The code words are 23 bit long strings. 12 bits of octal code followed by 11 bits of CRC. This makes a total of 23 bits sent in a Golay encoded words. There are no sync bits and the baud rate is 134.4. Each bit is 7.5 msec in length, for a total of 172.5 msec. Although it looks like there should be 512 codes available, there are only 83 possibilities. This is to prevent a codeword that is misaligned as it is serially shifted into the decoder, matching one of the other codes.

 

[rigaud0520]

It might be helpful if you were to define the parameters of the project more concisely. Paint a picture of the RF scenario as it is now and as you want it to be post-project.

As for brands, in this particular forum, you can understand why you would expect Motorola to be recommended. But even then...we need more information. Right now you haven't even stated whether the radios at interest are VHF or UHF and whether or not they're analog or digital, and if digital, what format. DMR? P25? And if you don't KNOW, you have no chance of approaching success until you find out.

attatched is the channel summary

 

[ElroyJetson]

That's not very informative. It just tells what frequencies some of your channels are using.

What do you want to DO? Be as specific as you can. What can't you do now, that you want to do?

 

[rigaud0520]

That's not very informative. It just tells what frequencies some of your channels are using.

What do you want to DO? Be as specific as you can. What can't you do now, that you want to do?

Trying to figure out what to set the other radios settings to to be on the same channel other than the frequency.

 

[mmckenna]

Trying to figure out what to set the other radios settings to to be on the same channel other than the frequency.

You need to match the following:
Transmit frequency
Receive frequency
Transmit squelch type (CTCSS, DCS or none)
Receive squelch type (CTSCC, DCS or carrier squelch)
bandwidth (narrow or wide)
Transmitter power setting (don't assume "high", check the FCC license)

 

[rigaud0520]

You need to match the following:
Transmit frequency
Receive frequency
Transmit squelch type (CTCSS, DCS or none)
Receive squelch type (CTSCC, DCS or carrier squelch)
bandwidth (narrow or wide)
Transmitter power setting (don't assume "high", check the FCC license)

I can't seem to get them to work based on the channel summary I shared in a prior post. I'm not sure what to set the ctscc, or carrier squelch to.

 

[mmckenna]

On the Baofeng, set the receive squelch type to none, N/A, off, or whatever disables it.

If you have the receive squelch turned off, the receiver should hear everything transmitted on that frequency that is within range.