Re: Trial to control CW power (and reduce harmonics as a result) by unbalancing the 2nd mixer #ubitx

Jerry Gaffke
 

I like the display on the QRP Guys RF probe.
However, the input to the AD8307 is not well protected,
and any DC at the probe tip will blow the diodes.

Here's a cheaper AD8307 RF probe with what looks like a better front end, but no display:
    https://www.ebay.com/itm/RF-Active-Probe-0-1-500-MHz-with-AD8307-detector-/332405976109
Cheaper still, but without the better front end:
    https://www.ebay.com/itm/AD8307-RF-Power-Detector-Module-DC-to-500MHz-Transmitter-Power-Test-92dbm/263868813801



On Thu, Apr 18, 2019 at 07:03 PM, Jerry Gaffke wrote:
I'm liking the looks of this AD8307 RF probe, very clever how they make use of a cheap digital voltmeter module:
    https://qrpguys.com/qrpguys-digital-field-strength-meter

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