General Terms
All items are being sold as-is. To my knowledge, items should be fully functional unless indicated in the item description. Price indicated does not include shipping, which will be the actual shipping cost to your location from ZIP code 97006. If you are interested in purchasing items, please email me at milldrum at gmail dot com
Tektronix TM504 Mainframe with Plugins
This mainframe provides power to all four slots, has a working power switch, and only has a normal amount of cosmetic scuffs and dings for an instrument its age. Included is a set of matching plugins: DC503A frequency counter, SG503 signal generator, DM502A Digital Multimeter, and FG501 function generator. The DC503A and DM502A are in excellent condition and work perfectly to the best of my knowledge. The SG503 basically works, but the signal level seems to be out of calibration. It can still be used with an oscilloscope to set the proper signal level. The FG501 doesn't work. Maybe you can get it working, or you can at least get a good vernier from it. The price is essentially for the TM504, DC503, and DM502. The SG503 and FG501 are basically freebies for buying the whole package.
$250
Tektronix TM504 mainframe with plugins
Tektronix 1240 Logic Analyzer
A fine 100 MHz logic analyzer from Beaverton, Oregon. I never got around to using it, as I had no room for it in my shack. It powers up and passes self-test just fine. Controls work well, including the touch screen. The second photo shows a close-up of the capture card configuration (two of the 9-channel/10 ns cards and one 18-channel/20 ns card). I also have three pods: two P6461 pods and one P6460 (with on probes on this pod). Also has the nice cover for it.
$100
Tektronix 1240 Logic Analyzer
Tektronix 1240 Logic Analyzer
Tektronix 1240 Probes
How is the DG1022U working out. I don't know how recent your post was but it cant be too old as the little generator is relatively new.
I am a hobbyist and I just got a new Rigol scope. Now I want to get a small function generator. I am 73 yrs old so I am wondering how complicated the instructions will be for me. I am just getting acquainted with the scope and I think I can figure it all out. I was pondering over the idea of a used Wavetek for a couple of hundred dollars or spend $400+ for a new Rigol. aybe you can give me a few pointers about the 1022U. I have a few old receivers here that I want to experiment with sweeping the IF's to --- Just learn how to do it, I guess.
Anyway I enjoyed reading your post. I think it is more along my way of thinking. I read a negative review on an EE website and I think a "ham review" is more of what I was looking for.
73
Phil K9DNH Litchfield, IL
Phil,
So far I'm happy with my purchase of the DG1022U. I've used the basic CW signal generation purposes, and it has done that job quite nicely. When set to -50 dBm and paired with my HP step attenuator rig, it can provide a signal down to about -130 dBm or so.
I have briefly tried AM modulation, just to see that it works as expected. It's actually quite amazing that it gives you AM, FM, PSK, and FSK. Not to mention PWM and other pulse-train type signals. And I haven't even touched the actual arbitrary waveform generation yet.
There is been some concern expressed to me that since the unit is based on DDS technology, the spurious emissions might be problematic. Now that I have the DSA815, I plan on checking out how the spurs look on integer MHz frequencies, which tend to be problems in DDS systems.
It also has a built-in 200 MHz frequency counter, which is quite handy. If you pair that with the USB connectivity, you have an automated oscillator stability measurement system.
If you want to sweep circuits, it does have a sweep setting and a sync output, which you could pair with an oscilloscope or a spectrum analyzer without a tracking generator.
Like I said, I have no complaints at this point, but I haven't really put it through its paces yet.