On Mar 7, 7:55 pm, wrote:
On 7 Mar 2007 06:58:53 -0800, "Gian, I7SWX" wrote:



Hi All,

If you like to know more about D'MIXER that removed the mixer from the
most critical stages in a receiver see what Martein Bakker, PA3AKE,
--SNIP--

http://www.xs4all.nl/~martein/pa3ake...-overview5.pdf

Gian,

It is indeed interesting. Most people look at this and apply it for
recievers that have high dynamic range. I've experimented with
this topology as a transmit mixer as I can put a fair amount of RF
power in and get a significant amount out without high LO drive
requirements. This easily saves one to two TX gain stages and
attendant power needs. For transmitting the high overload threshold
is very useful.

Allison
KB!GMX

Hi Ed, good information.... I have replaced the 2nd mixer in an
FT1000MP with an I7SWX 2 transformer configuration, plus reviewing the
2nd IF gain and .... the user (contester and DX man) is so happy he
does not want to send it to a friend for review... hi!!!

Hi Allison,

you are right. The H-Mode is not only a mixer for receiver, it is also
for transmitter. The H-Mode Mixer is bi-directional so you need only
one in an RTX.

BTW, when you here my good friend Art, K1GBX, say hello to him and his
xyl ... tell him you did work me on 50 MHz ...he will get crazy...at
me ... hi

73

Gian
I7SWX