Garey, I know we need to leave all the finals in on a TR-4 because of the series parallel filaments, but could one leave the plate caps off one or two tubes to cut the power output instead of using a power reducing network ? Boyd W0BUW
Garey Barrell <[EMAIL PROTECTED]> wrote: Garey Barrell made an utterance to the drakelist gang ---------------------------------------------------------------------- There is a set of N.O. contacts on Pins 5 and 8 of the Jones connector that close on transmit that can be used to ground the relay in the Ameritron. They are rated at 2 A at 250 VAC so no problem handling the relay current. If you're using an AC-4 power supply, these contacts are wired to the two-pin connector on the side of the AC-4 marked VOX. The TR-4C expects a negative ALC voltage from the linear. If the Ameritron provides this, it will work, but may require some sort of level adjustment. The TR-4C has MUCH too much power output to drive a 1 kW linear. Aside from the fact that the amp is less than one-half S-Unit increase in signal strength over the TR-4C, you will need some sort of resistive pad between the two to keep from overdriving the amp. The TR-4C will put out 200+ watts and the AMP will probably put out 500. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B & C-Line Service Supplement CDs Boyd Van Horn wrote: > Could someone out there help me with the interface to use between my > TR4-C's and the Ameritron AL-811. The ameritron has its own > Transmit/Receive relay which uses 12 VDC at a 100 ma when grounded. Is > there anyway to use the ALC circuit on the Amp with the Drake ? Boyd > W0BUW > ---------------------------------------------------------------------- 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 ----------------------------------------------------------------------
