Richard,
The Tektronix P6009 probe is rated up to 2.1kV peak (1.5kV rms, 4.2kV p-p), but not at full frequency. It is derated to 1000V peak in the 3MHz to 6MHz range, and 200V peak at 30MHz.
These ratings are from the Tek website. The case of DC plus superimposed AC is not covered explicitly.
There have recently been a number of imported high voltage, high frequency probes on eBay, one I saw was rated 4kV (DC+peak AC) and 100MHz bandwidth ($49.99), but I assume it cannot handle that high an AC voltage at the full 100MHz.
--John Gord
toggle quoted message
Show quoted text
--- In TekScopes@..., "Richard" <w6ccd@...> wrote:
I have a 475 scope, but pretty much a beginner in its use. I want to measure RF frequencies in a ham tranceiver that could be as high as 800 VDC, and up to 30 Mhz. My question has to do with the proper type of probe. Is anything special needed to measure RF frequencies that could be generating significant power other than a common probe? Does the scope need protection from high power RF? I want to at least see what is going into the grids of the final amplifier tubes.
