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BK Precision Dynascan Corporation 2005

saturated

Can't find my ass with both hands....but I'm here
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May 6, 2026
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Hello gentlemen and ladies hope you are having a wonderful evening. :giggle:

Being an (OLD) noob I wanted to get a signal generator that presumably (sorry still learning) would modulate rf with af.

I already had this af unit and it has been rock solid

1000006144.jpg

However delving into the realm of rf I began googling and reading tons here and well ya know wow I love all the old boat anchors and toob stuff but i wanted to try to give myself some advantage (I still drool over looking at pics and videos of HP-606 units and may still get one some day :cry:)

However back to the present I wanted something simple and solid state for sure. Of course I also drooled over the big HP-8640 and consecutive technology but I didn't want to get stuck with something big heavy expensive and in need of repair.

So here we are.

Just trying to comprehend fundamentals I was like man just try to get an rf signal on your scope and then modulate it and then revel in your technological achievements while eating a burnt grilled cheese

So I got this for a pretty good deal (I think) yes I know it's not NASA or FCC certified it's just something I can play with :giggle:

It looked hella nice in the pics I asked the seller if they had the power cord because the socket looked weird they said no then made me an offer so I took it :LOL:

When I got home from work it was on the porch and I went to my stash of power cords and found one that fit and it powered up.

1000006141.jpg

So maybe this ain't right (neither am I) I took the easy way out and just connected it BNC cable straight to the scope. With everything turned down low

Anyhow I couldn't get a damn thing out of it finally just touching and switching the range knob I got some signal (woot)

So I put it on 10.7 Mhz

1000006142.jpg

So I thought oh hell yeah envelope here we come I started to add modulation but all it does is add little pointers to the peaks dag nammit :mad::(

1000006143.jpg

Anyhow I don't know anything this is kinda where I'm at with all of this

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But it's a start at least I have something real and actually putting my hands on it :giggle::coffee:

Down the road I'll probably see this and go hmm yeah the reason you don't have a nice pretty modulated envelope...
 

Meanwhile I tried some external modulation

1000006149.jpg

Still not being rewarded with a (wave packet ?)

1000006150.jpg

EDIT
went back and read the manual (ya think?!?)
I think I need something called a 50 ohm termination
 
Last edited:
To look at the audio modulation envelope you need to turn the sweep speed down to a more audio-friendly speed. It has to be really fast to see the RF waveform. To see the modulation envelope try 20 mS per div. The RF will just be a blur, but the modulation will be more legible.

73
 
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