[Elecraft] K2 & 6m transverters

Trevor Day [email protected]
Wed Jun 26 17:28:00 2002


Thanks Dave, and all the others that have replied to my original post.=20
After due consideration I have decided to go for the low power version=20
of the DEM transverter as I only need 2 Watts to drive my PA to full o/p=20
and a single stage 2W PA is a trivial addition.  Having looked at the=20
specs and user comments on the DEM it seems to fit my needs pretty well.=20
I have been using a PW Meon (UK design) for a number of years and=20
although it has performed well its design is somewhat basic.  The DME=20
will be fitted to an EC2 enclosure.  I may build in a PA at a later=20
stage, particularly if the KPA100 lid/heatsink becomes available=20
separately???

Thanks again guys (BTW, are there any gals?)

Trev G3ZYY

In message <002101c21d2e$96c3a320$fe32b6ac@o0g9u4>, Dave=20
<[email protected]> writes
>Trev
>=A0
>I've just bought a second hand Microwave Modules MMT144/28
>transverter. They are quite old now but work OK for most purposes and
>can be found=A0cheaply on the second hand market. I don't know if there
>was a 50 MHz version. The box is small enough to fit a K2 sized case,
>although at the moment mine is not cased that way. Power output is 10
>Watts from a 12 Volt supply - 300 mA on receive and 2.5 A on transmit.
>They use diode switching and will need the 2nd receiver (K160M) and
>KIO2=A0options in the K2 plus a simple two transistor interface (2 x 2N222=
2)
>to ground a 12 volt floating input at 80 mA. The drive level is a maximum =
of
>500 mW, I use a 2 Watt 10 dB attenuator made in pi style from 2 x 100
>Ohm and 1 x 75 Ohm 2 Watt resistors. All straightforward stuff.
>=A0
>If you want a copy of the switching circuit, let me know.
>=A0
>73's Dave, G4AON
>K2 #1892

--=20
Trevor Day