Hi Pete.
Thanks for the info, I was really looking
for a single paddle key not a bug but this one came up at a reasonable price.
Should soon be back on LF the new input band pass filter for the RX pre-amp was
completed on Sunday, only problem is that the filter drifts with temperature,(I
never checked this with the 500kHz BP filter), I can correct for this as there
is peaking variable capacitor in the pre-amp which I use to tune for max
signal. All I need to do now is retune the TX driver and PA, and possibly add a
few more turns on the variometer and we should be there.
73
Ken
M0KHW
What I
have been doing over some considerable time is building my own. It's not yet
finished the vibrating part has been mocked up and it will send dits. There is
in fact a lot of clever features you have to think about when designing these
things like after a series if dits you then send a dash the "Reed"
has to be damped to stop it continuing to send a dit. Not only that in transit
the Reed needs a bit of protection so a feature to lock the Reed is desirable
other wise it is continually trying to vibrate as it gets moved or knocked.
This can be achieved by adjusting the damper hard over. Is it the case with
your Key that it has been set for transit.... I don't know this particular Key
but in the You Tube video you can see it operating at the end of the Reed /
weight bar.
Look
forward to hearing it on 630m.
73 es
GL Pete M0FMT IO91UX
I have recently acquired a BK-100 Hi-Mound Bug type Key, although
old, it looks as if it has never been used, the contacts are black, and does
appear to have been set up, and not had any cable connected to it, (I have some
basic set up info from the internet). On inspection it would look as if the
dashes are to the left and dots to the right, is this correct?, there is hardly
any travel on the lever, and vibration on the pendulum. All of the adjustors
seem to be locked. I wpuld be grateful for any help and advice on the operation
and setup of this key.
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