Man, you guys should see my R&S SMPD. 50 lbs of 500 kHz to 2.7 GHz German-spec signal generator! Yeah it takes up 1/3 of my bench. That's the downside...
Steve Wedge, W1ES
Time flies like an arrow.? Fruit flies like a banana.
Sent with Proton Mail secure email.
toggle quoted message
Show quoted text
On Monday, January 27th, 2025 at 3:27 PM, jerry-KF6VB <jerry@...> wrote:
On 2025-01-27 07:07, NU2W via groups.io wrote:
I will stick with the old way---big heavy sig gens, oscilloscope,
muti-meters....
*** Alas I cannot. Limited bench/storage space and bad back. Back in
my salad days, I put in a few years fixing and maintaining big old heavy
test equipment, so there's a bit of nostalgia about that...
There's some really neat little stuff out there now. Right here, I have
a project. It's a signal generator I bought from "AF&CH" in Ukraine on
Ebay. It's
based on an AD9910 Direct Digital Synthesis chip. It generates nice
sine waves using a 900MHz sample clock.
It can also be goosed up to 1.5gHz, but they recommend fan cooling if
you do that.
For HF frequencies, 900MHz is plenty. Spurious are 50dB down. It has a
built in
attenuator - 1 dB steps from 0dBm down to -72dBm.
It wasn't cheap; I bought it fully assembled, with an OCXO ( Oven
Compensated Crystal Oscillator ).
It's got an Arduino card bolted to it; I plan to program that to
implement a signal generator
with a big tuning knob.
- Jerry, KF6VB
