[SignalOne] Milspec 1030 Vox operation

Thu, 31 Jan 2002 15:32:27 +0100

hallo uli,

mir geht es im moment nicht gut, hatte einen kleinen schlaganfall ....
ich habe ja noch das dicke bunte handbuch zum 1030c ... koennte da drin sein, was du suchst?

schoene gruesse, felix

31.01.02 14:54:24, Graf Ulrich Ulm <[email protected]> wrote:

>Hi Paul and others,
>
>now I finally detected why I got the impression that vox operation of the
>Milspec 1030 gives lower signal output. When I first tested vox mode I
>obviously used my linear amp. Output was much lower when vox was activated
>than in ptt mode. When I tested again some weeks ago everything was fine -
>this tests were run w/o linear. Yesterday I tested again for some other
>reasons and found output to be lower again. After some investigation I
>detected the deficiency. In vox operation the linear relay will not be
>activated! So every time I tested vox w/o linear, operation was perfect but
>with linear only the 100 W drive level was measuerd - much lower than
>average power with linear.
>
>Now I started to study the circuit diagrams another time but could not find
>my way through from vox amp to relay. I get the impression that some link is
>missing. Or that definitions of lines or interconnections change from board
>to board. Could you - or anybody else - give me a hint on which diagram I'll
>find the connection from vox amp to the PTT line? And from PTT to (linear
>amp control) relay?
>
>BTW does there exist a diagram for the 1030 with complete power supply
>schematic? I'm missing the diagram showing the power transformer and the big
>regulator electrolytics. Also I don`t find my way through from the 12 v
>regulator via driver to the big pass transistors. Any hints?
>
>Thanks for your help!
>
>73 Uli, DK4SX
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