Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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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
<www.k4oah.com>
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
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