Am transmitter?

  • Thread starter alanveron
  • Start date
  • #26
Thank you for your civil response: I will take a careful look at your thread.

I wonder if the original poster of the question got anything out of the posts people have contributed. It would be most helpful if he could tell us what if anything finally answered his question, and what (if anything) simply left him confused.
 
  • #27
359
0
One form of AM TX uses high level modulation. The final class C stqage (valve or transistor conducts for less than one half cycle) has audio superimposed on its DC supply. A 100 Watt (carrier) TX would require a 50+ Watt audio amlplifier to do this.



Another form essentially does this at a lower power and then linear amplifiers(s) run in class AB are required. Class AB amps conduct for a little more thn half a cycle and with produce an amplified replicar of the input. Class C amps can't do that but are more efficient.

Doherty modulation (carrier valve and peaking valve) is often used these days which is more efficient than both of the above.
 

Related Threads on Am transmitter?

  • Last Post
2
Replies
27
Views
4K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
14
Views
21K
  • Last Post
Replies
3
Views
5K
  • Last Post
Replies
2
Views
5K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
1
Views
790
  • Last Post
Replies
12
Views
4K
  • Last Post
Replies
8
Views
3K
  • Last Post
Replies
3
Views
928
Top