| Author |
Message |
    
Stepchild
Intermediate Member
Username: Stepchild
Post Number: 206
Registered: 11-2002
| | Posted on Friday, August 14, 2009 - 2:03 am: | 
|
I've been on some other forums and they have been having a fit trying to figure that out. I did here some cw on 38 a while back and thought it was pretty cool. I cant do morse so I couldn't call back.
Stepchild
CEF-187
|
Tech833
Moderator
Username: Tech833
Post Number: 1722
Registered: 8-2002
| | Posted on Friday, August 14, 2009 - 10:58 am: |
|
It's really easy to do by just keying a pure sinewave tone into your CB's microphone when your radio in is USB or LSB mode. If your tone is a pure sine wave, you get beautiful looking and sounding CW. No radio modification required.
If you listen on LSB or USB mode, depending on which mode the other station is transmitting, it sounds like a nice modulated CW tone.
|
Tech237
Moderator
Username: Tech237
Post Number: 1211
Registered: 4-2004
| | Posted on Friday, August 14, 2009 - 11:56 am: |
|
Actually I thought that CB regs did state AM or SSB modes. Now the grey area comes in as you are using a modulated CW form using SSB...
Simon
Tech237
N7AUS
.
I thought he said, "there was no rust for the wicked, and I own an MGB"
|
Milkman21218
Intermediate Member
Username: Milkman21218
Post Number: 385
Registered: 1-2004
| | Posted on Friday, August 14, 2009 - 1:15 pm: |
|
The FCC does say no CW (codes)
PART 95--PERSONAL RADIO SERVICES--Table of Contents
Subpart D--Citizens Band (CB) Radio Service
Sec. 95.412 (CB Rule 12) What communications may be transmitted?
(a) You may use your CB station to transmit two-way plain language
communications. Two-way plain language communications are communications
without codes or coded messages. Operating signals such as ``ten codes''
are not considered codes or coded messages. You may transmit two-way
plain language communications only to other CB stations, to units of
your own CB station or to authorized government stations on CB
frequencies
Sec. 95.425 (CB Rule 25) May I make any changes to my CB station transmitter?
(a) You must not make or have any one else make any internal
modification to your CB transmitter.
(b) Internal modification does not include:
(1) Repair or servicing of a CB station transmitter (see CB Rule 24,
Sec. 95.424); or
(2) Changing plug-in modules which were certificated as part of your
CB transmitter.
(c) You must not operate a CB transmitter which has been modified by
anyone in any way, including modification to operate on unauthorized
frequencies or with illegal power. |
Stepchild
Intermediate Member
Username: Stepchild
Post Number: 207
Registered: 11-2002
| | Posted on Friday, August 14, 2009 - 8:14 pm: |
|
Yeah but also states that you can't run more than 4/12 watts and outside 26.965-27.405 Not trying to be a smart aleck but tell that to the guy's on CH6. As long as you arent just being a general a$$ you wont have any trouble on CB.
Stepchild
CEF-187
|
Tech833
Moderator
Username: Tech833
Post Number: 1724
Registered: 8-2002
| | Posted on Friday, August 14, 2009 - 11:02 pm: |
|
Interesting topic.
Sec. 95.412 (CB Rule 12) What communications may be transmitted? Includes it's own translation: " Two-way plain language communications are communications without codes or coded messages."
Same rule, section A, subpart (b) says "You may use your CB station to transmit a tone signal only when the signal is used to make contact or to continue communications. " Using that tone to continue communications could be an example of CW.
Sec. 95.413 (CB Rule 13) What communications are prohibited? doesn't mention CW at all, not even close.
But, I think you really do have a point on this one-
Sec. 95.631 Emission types.
(c) A CB transmitter may transmit only emission types A1D, H1D, J1D,
R1D, A3E, H3E, J3E, R3E.
I don't see A1A in there. A1D is close, and tone modulated SSB might qualify if you really stretched it, but you might be right on this!
Heck, it may actually be against the rules. My goodness!
Thanks a lot for bringing this up! You really made us think. |
Tech237
Moderator
Username: Tech237
Post Number: 1212
Registered: 4-2004
| | Posted on Saturday, August 15, 2009 - 10:38 am: |
|
But as I said you are using J3E with a tone modulation. It's a murky area.
Of course PSK-31, SSTV, Olivia etc all use a tone modulated J3E mode, so technically all of us (and that includes me) that has stated in the past tha these are illegal transmissions may be wrong. It all depends on what PTB defines as plain language, and that could vary depending on who you ask.
Simon
Tech237
N7AUS
.
I thought he said, "there was no rust for the wicked, and I own an MGB"
|
Tech833
Moderator
Username: Tech833
Post Number: 1725
Registered: 8-2002
| | Posted on Saturday, August 15, 2009 - 3:22 pm: |
|
If you modulate a SSB transmitter with a pure 1 kc. (for instance) audio tone, you are actually transmitting A1A either 1 kc. up or 1 kc. down, depending on if using USB or LSB.
So the actual emissions designator might be 'fudged' a little. |
