"Jim Shorney" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- On Sun, 16 Dec 2007 18:18:29 -0000, AirRadio wrote:
>Hi gang, Has or does anyone run an L-4B on AM, if so what is the max output to >the antenna expected with 100w carrier input, having said that is 100w too >much for the input, regards Max Yes, 100 watts is too much. You need to understand the PEP-to-carrier ratio involved with AM. The manual states that with 100% modulated AM (I assume this to mean full-carrier, both sidebands), the transmitter should be adjusted to produce 500 watts DC plate input in the amplifier. This translates to 250-300 watts carrier output. If you are using a Drake controlled-carrier AM transmitter, adjust everything per manual specs and you should be OK, but in any case do not exceed the maximum PEP ratings of the amplifier or the maximum legal limit allowed by your licence, whichever is lower. I'm sure one of the gurus who lurk here will come up with a more complete answer... 73 -Jim -- Ham Radio NU0C TR7/RV7, TR6/RV6, T4XC/R4C, L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
