Thread: vfo question
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Old March 10th 04, 06:02 PM
N2EY
 
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"KU4YP" wrote in message . ..
hello all,

i have a vfo from a heathkit hw-101. i also have a knight kit t-60.
question is what would it take and how much trouble would it be to build an
external vfo for my t-60 transmitter using this vfo? i have read some of the
old hanbooks but wanted to hear from the group.


The tuning range of the VFO in the HW-101 is 5 to 5.5 MHz. Its output
is low impedance and only about a volt or so.

The T-60 requires VFO output in the 80 and/or 40 meter bands. It needs
more output (several volts at least) than the HW-101 vfo can provide.

The mixer solution suggested by others will work, but it's not simple
and requires a bit of doing to get going.

Knight did not make a matching VFO for the T-60. There *was* a Knight
VFO, but they are relatively rare.

One very good yet simple VFO design is the QST article (February 1962,
IIRC) called "An Easy To Build VFO" by W1ICP. Will drive almost any of
the classic "Novice MOPA" transmitters like the T-60.

73 de Jim, N2EY