*****SPAM***** [ICOM] IC-745 and 6-meter transverter

[Gary Fiber]

Richard,

You apply the 8 volts to the TRV pin while transmitting. This does two 
things, cuts off the finals and reroutes the low level RF out the TRV 
rca jack.
Be aware this RF level is 30 millivolts. You may need to amplify this 
level to properly drive the transverter.
I would have to look at the 745 manual to give you pin numbers etc. Many 
use the 8 volts the rig has on one of the pins then route it through an 
external relay.
Also many times the transverter will provide that 8 volts when switched 
to transmit.

So far as I know Icom never made a 6 meter transverter.

Gary K8IZ

Richard Peterson wrote:
> I need some help interfacing a homebrew 6 meter transverter to my 745. 
> It appears that any explanation of the interface and operation is not 
> to be found in the 745 manual or the 745 shop manual, so I guess this 
> info must appear in a manual furnished with an Icom 6-meter 
> transverter. Since I don’t have such a manual, I am stumped.
>
> It is clear to me that the low level transmitter output for the 
> transverter is available from an RCA plug on the back of the 745. 
> Good. No problem. That makes sense.
>
> It is clear to me also that, if I apply 8 volts to a pin on the 
> accessory plug, it energizes RL2 on the RF board, which then appears 
> to link the receive filters to something in the 745. My 745 manual 
> says only that this is for use with a transverter. I just don’t know 
> where the connection goes. I can’t trace it out.
>
> Too, there has to be a way to de-energize the finals, so that only 
> low-level drive is produced.
>
> Can someone give me some guidance? Is there information on the web 
> that can be downloaded?
>
> Thanks.
>
> Richard
> WB5NEN
>
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