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| Tektronix 531A How fast is it and what plugins will it accept |
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| Aperna1985:
I didn't see that little button to attach. Thanks. So basically there's no way to see 90MC on my Tek 531A? I attached the Schematic of the radio below. |
| David Hess:
--- Quote from: Aperna1985 on January 18, 2024, 06:58:02 pm ---So basically there's no way to see 90MC on my Tek 531A? --- End quote --- That is the short answer. The Tektronix 531A only has a 15 MHz bandwidth. Usually an RF probe to measure the envelope is more suitable. https://w140.com/tekwiki/wiki/531 In theory a Tektronix 1S1 sampling plug-in can be installed to allow operation up to 1 GHz, however the chance of getting this to work with such old instruments is low so I do not recommend it, and sampling oscilloscope operation by itself even when everything works is not straightforward. https://w140.com/tekwiki/wiki/1S1 |
| Aperna1985:
--- Quote from: David Hess on January 18, 2024, 10:06:36 pm --- --- Quote from: Aperna1985 on January 18, 2024, 06:58:02 pm ---So basically there's no way to see 90MC on my Tek 531A? --- End quote --- That is the short answer. The Tektronix 531A only has a 15 MHz bandwidth. Usually an RF probe to measure the envelope is more suitable. https://w140.com/tekwiki/wiki/531 In theory a Tektronix 1S1 sampling plug-in can be installed to allow operation up to 1 GHz, however the chance of getting this to work with such old instruments is low so I do not recommend it, and sampling oscilloscope operation by itself even when everything works is not straightforward. https://w140.com/tekwiki/wiki/1S1 --- End quote --- What equipment do I need for an RF probe and can you recommend one? |
| BrokenYugo:
A basic passive RF probe is a simple diode detector circuit. Maybe biased for better picking up small signals below the diode's forward voltage. Easy to DIY, you probably have enough parts to make one. http://techlib.com/electronics/detect.htm https://n5ese.com/rfprobe1.htm |
| Aperna1985:
Oh I actually already have one. I tried it but there's literally no signal anywhere. If I use my signal generator I can pass through so I know the IF section and audio amp are working. I need to check the oscillator and I'll also need the scope for aligning the Oscillator |
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