| Author |
Message |
    
Alleycat
New member
Username: Alleycat
Post Number: 7
Registered: 3-2005
| | Posted on Friday, April 29, 2005 - 4:38 am: | 
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I have been taking the practice tests to get my Tech. license the last 3 days or so and am averaging around 85% now. In one or two of the questions or answers the word "phone" is used. One of the correct answers for a question on 10 meters and what a Tech. can do is "CW and SSB phone". I don't know what "phone" means when used like this. Maybe voice transmissions? I have seen it used in other places when I was reading about Ham and did not understand it then either.
Thanks for any help. |
Tech291
Moderator
Username: Tech291
Post Number: 158
Registered: 11-2004
| | Posted on Friday, April 29, 2005 - 7:38 am: |
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Allycat,
you are correct,phone referrs to voice transmissions
tech291
CEF#291
kc8zpj |
Crackerjack
Intermediate Member
Username: Crackerjack
Post Number: 385
Registered: 7-2004
| | Posted on Friday, April 29, 2005 - 8:45 am: |
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Yes, the correct technical term is "Radio Telephone". In this case (SSB Phone) it prohibits AM transmissions. |
Timebomb
Junior Member
Username: Timebomb
Post Number: 42
Registered: 2-2005
| | Posted on Friday, April 29, 2005 - 4:37 pm: |
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Also, think of microPHONE.  |
Bruce
Senior Member
Username: Bruce
Post Number: 2539
Registered: 9-2003
| | Posted on Friday, April 29, 2005 - 4:38 pm: |
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and STRANGLY SSB is AM ! ....... Well give the FCC credit on this one...... |
Alleycat
New member
Username: Alleycat
Post Number: 8
Registered: 3-2005
| | Posted on Saturday, April 30, 2005 - 3:40 am: |
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Thanks all.
More questions where the term "phone" is used have now come up on the practice tests and I had no problem with them. |
Crackerjack
Intermediate Member
Username: Crackerjack
Post Number: 393
Registered: 7-2004
| | Posted on Saturday, April 30, 2005 - 5:54 am: |
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Bruce: Amen!
To them it is a question of bandwudth and carrier suppression, not modulation. Because SSB is an issue of signal supression, improved propogation, and power efficiency, not modulation. LOL...
You would think that in all these years, that if they are stressing technical competenance, they would find a better way to express themselves regarding such an imoportant technical distinction.
As I said before, the Navy calls it "Suppressed Carrier, Selective Envelope, Amplitude Modulation". Achieving SSB that way makes their signals as rock stable as AM. I don't ever remember using a vernier on a SSB signal -although there was one on the receiver.
Oops, I do too remember. When communicating with ships in the civilian and merchant fleets. |
