| R (readability | R1 to R5 |
| S (Signal strength) | S1 to S9 |
| T (Tone) | T1 to T9 |
The phonetic alphabet is meant as an aid to the spelling of a call sign or word, and must be learned.
Repeaters are to relay FM signals in the VHF and UHF bands. Access is normally gained by a tone-burst at 1.75kHz for 0.5 seconds. Satellites allow long distance communication, and they operate in a number of modes.
Safety is of obvious prime importance. Good earthing, adequate mains isolation and correct maintenance procedures are paramount.
![]() Questions |
| page (t25) |
| Some material Copyright John Bowyer G4KGS. |
| Click here for important Copyright information |
| Web Space provided by Hostroute.com Ltd |
| Contact details |