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563inrad [2007/12/25 04:56] n5na |
563inrad [2008/08/29 23:28] k4elo |
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Dave, K1FK | Dave, K1FK | ||
+ | |||
+ | August 29, 2008 | ||
+ | |||
+ | It's also simple to control the Inrad filter with the ATTN switch if you don't use that function. | ||
+ | Here's what you do: | ||
+ | Skip Inrad's instructions numbered 18 through 24. | ||
+ | Set aside the cable/connector provided for J4 on the Inrad board, you | ||
+ | won't need it. | ||
+ | Take the cable/connector provided for J3 and tie the lines together, | ||
+ | then | ||
+ | add an extension so the wire will reach up to the front of the Omni, | ||
+ | plus 4 or 5". | ||
+ | Locate the 3 pin white connector labeled 18, at the left front side of | ||
+ | the Front End Board, as viewed | ||
+ | from the front of the Omni. Cut the middle wire going to the connector, | ||
+ | leaving a few inches | ||
+ | behind on the connector in case you ever want to reconnect it. This is | ||
+ | the line that goes to the Attn | ||
+ | switch. Connect the lead from Inrad J3 to the end of the line going up | ||
+ | to the front panel Attn switch. | ||
+ | Tape up the end still attached to the connector. Set S1-S4 on the Inrad | ||
+ | board to ON. | ||
+ | |||
+ | That's all. Inrad now switches in and out with the Attn switch and the | ||
+ | led shows when Inrad is switched in. | ||
+ | All Omni filter switches are unaffected. | ||
+ | |||
+ | 73, Wayne K4ELO | ||