[VHFcontesting] [Mw] First RF device in a DEMI 2304-144 RX line up.

[Zack Widup]

I'll excuse you Dave.  I just want to work you in the next contest! :-)

I built one of the original WA8NLC boards (in fact, I think I even got it 
from Jim). When DEM came out with the mod sheet upgrading the devices in 
it, I did the mod with the MGA85676 and the ERA-1's and ERA-2's. The board 
performed MUCH better!

I wondered why Steve at DEM would've switched to a GaAsFET on the input. 
Maybe better performance than the MGA865 but then he'd have to fit in all 
the extra biasing and additional matching circuitry. The 865's are easy 
to use.

I'm currently using a WB5LUA design LNA ahead of the receiver input on the 
2304 transverter with an ATF36077. Very nice.

73, Zack W9SZ

On Tue, 11 Sep 2007, Dave Sublette wrote:

> OOPS!! I'm not doing too well today. Disregard all of my sage advice. I
> looked at my 222 transverter paperwork---NOT my 2304.
>
> Here is my revised answer....My unit has an MGA86576 RF stage.
>
> I am very sorry for all the confusion I have caused.
>
> K4TO
>
> Mike Krzystyniak K9MK wrote:
>>    Mother nature got my 2304 transverter a month ago.  I think he first RX
>> device got popped during a lightning hit.  Last night when I went to repair
>> it, I noticed that the RF schematic was more like a block diagram, and is
>> lacking a parts list.   Seven pages of documentation on their TC and LO
>> boards, buy nil on top RF.
>>
>>    DEMI is out of the office for another week.
>>
>>    Does anyone have a parts list or know what the top RF devices is in the
>> RX line up?
>>
>> Thanks... Mike K9MK/5
>>
k