Hi Dave, It is sad to hear that Bob has been unable to beat the "noises", I
know what he has to contend with. Please pass on our thanks and good wishes,
for all the work he has done over the last few years to put a consistent and
distinctive hand-keyed morse signal out on the bands, particularly during
the weekdays.
Cheers de Alan G3NYK
[email protected]
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: 10 June 2003 09:02
Subject: LF: 300W 136kHz TX
I had a call from Bob G8RW today.
Bob has one of my 300W class D transmitters which he ran as a 'beta test'
prototype for me.
Bob has gone QRT on LF due to the ever increasing switched mode power supply
QRM and would like to find a new home for the TX.
The transmitter is housed in an aluminium case apx 12 W x 6H x 10 D
(inches). From memory, It has a fan, 12V PSU for the logic and had some
extra
protection voltage clamping diodes fitted across the FETs. - I can't
remember if there
is an internal 30V psu for the FETs or not.......Best check with Bob and
adjust price accordingly.
Frequency control is the on-board VCXO but there is an input on the PCB for
a
DDS etc at CMOS levels.
Price can be haggled, but something around the cost of the TX kit (£79)
seems
fair as this means you'll save the effort of building it and the cost of the
box, heat sink, fan and PSUs etc. -
Bob's telephone number is 020 8462 1592 QTH is Bromley Kent.
73
David G0MRF
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