[Lowfer] Need drawing for RF keying stage...

[Johan Bodin]

Mike,

take a look at HCMOS analog switches. For example 74HC4066.
With a 5V supply, the ON resistance is around 50 ohms per switch.
You could connect all four switches in parallel to minimize loss. Make
sure that the signal stays within the supply rails and the chip will =
work
as a super fast relay.

For some reason, the HC analog switches can be used at higher supply
voltages than other HC chips. Philips 74HC4066, for example, is =
specified
to work from 2 to 10V (absolute maximum 11V). At 9V, the mid-rail
ON resistance is down to 25 ohms per switch.


> I had a little setback tonight as my 4-year old son discovered my wire
> cutters and my antenna in the basement. He so kindly cut little =
sections
> out of it.

My 3-year old son Gustaf has the same skills. He is the boss of the
department for destuctive testing here at SM6LKM. The slogan goes
"You make it - we break it!" :-)

73
Johan SM6LKM