EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: ko4nrbs on November 09, 2022, 02:32:28 pm
-
Has anyone built this?
https://www.nutsvolts.com/magazine/article/build-an-rf-frequency-counter-buffer-for-hf (https://www.nutsvolts.com/magazine/article/build-an-rf-frequency-counter-buffer-for-hf)
Thanks,
Bill
-
Wouldn't a standard 1:100 oscilloscope probe with a BNC adapter do the trick?
-
Wouldn't a standard 1:100 oscilloscope probe with a BNC adapter do the trick?
Yes. Wanted something I can use to monitor the VFO frequency of my old AM transmitter while operating. I have used a commercial demodulator and sampler to view the transmitters output while modulating the output.
Bill
-
I made a buffer from vintage sw receiver vfo to a PLJ_0802-C frequency display (with IF Offsets).
It is just a FET- Bipolar HiZ to 50 Ohm with a RG 174 coax to the display in another chassis.
input level 50 to 200 mV.
-
I made a buffer from vintage sw receiver vfo to a PLJ_0802-C frequency display (with IF Offsets).
It is just a FET- Bipolar HiZ to 50 Ohm with a RG 174 coax to the display in another chassis.
input level 50 to 200 mV.
Which FET- Bipolar HiZ did you use?
Bill
-
I made a buffer from vintage sw receiver vfo to a PLJ_0802-C frequency display (with IF Offsets).
It is just a FET- Bipolar HiZ to 50 Ohm with a RG 174 coax to the display in another chassis.
input level 50 to 200 mV.
Which FET- Bipolar HiZ did you use?
Bill
Home-brew 2n4416 into a 2n3904 as emitter follower
Edit :
Fet_Bi_Buffer qucs circuit with bias voltages:
https://app.box.com/s/74j8faqyjbk1xsjudkw7ngy9s4q5jnyi