two IF transverter install

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Radio is a Flex 6300. I have come into possession of a Microwave Modules 144/28 MHz transporter. This particular transverter has to IF ports, Input and Output. I can assume that I will need to construct a relay box to connect to the single XVTR port? 
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Michael Coslo

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  • confused as usual

Posted 2 years ago

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Phil m0vse

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Are you sure that it requires separate IF TX/RX connections as I have a MM 144/28 transverter and although it has RX/TX ports, using the RX port is optional and it will also work with a single TX/RX connection on the TX port?
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Michael Coslo

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I'll run down the ports on it, from left to right. 144 MHz output, 144 MHZ input, Power/TR,  If output,  IF input.  Microwave modules made some slightly different versions, and I think but am not sure they just changed the names on the ports. Mine looks like this unit :  http://www.elecraft.com/TechNotes/K2&MMT144.pdf

Which a fellow used to interface with  a K2. There shouldn't be a need for the 10 db attenuator, but with the single XVTR output on the Flex, it seemed a relay box to go to the appropriate IF connector would be in order.
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Phil m0vse

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Hi Michael. I suspect that is because the K2 doesn't have a transverter port? The one I have is labelled as follows (although you could well be right about different versions!) 

144Mhz Output --- 144Mhz Input --- Power --- Independent 28Mhz RX Output -- 28Mhz Transceiver

This matches the manual at http://www.radiomanual.info/schemi/ACC_transverter/Microwave_MMT144-28_user.pdf
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K3SF

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i am also trying to add same transvertor to my 6300  but can not find the right the 5 pin plug...does not appear to be a 5pin DIN...any help on this connector/plug type would be appreciate...maybe even a good source to get some...thanks paul k3sf
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Michael Coslo

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It's a 5 pin  DIN Male  - Ebay has them. Hope this helps. Mouser has them as well, but more expensive.

 http://www.ebay.com/itm/switchcraft-12cl5mx-5-pin-male-circular-din-/291049553292
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Phil m0vse

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The confusion is probably because MM used a 240 degree 5 pin DIN instead of the more common 180 degree ones. 
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K3SF

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hey phil n mike..thanks...just the info i needed about the 5pin din