I submit sample for FCC certification, radio is 30 dBm power at 2.4 GHz. Lab commanded to output 30 dBm with 100% duty cycle but measure only 27 dBm. See attached pics how they have measured the power, they removed the whip antenna and solder the pigtail cable.

Link of picture is below https://ibb.co/W0RcQfK enter image description here

a) I saw big solder point to solder the center wire. Can this effect the RF power?

b) Measure point is away from radio. I think they should measure near the radio module (marked with red color in image by me).

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    \$\begingroup\$ Have you measured 30 dBm and you are disputing what the FCC people are finding? \$\endgroup\$ – Andy aka Sep 12 at 7:42
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    \$\begingroup\$ How is your antenna matched? \$\endgroup\$ – user24368 Sep 12 at 8:15
  • \$\begingroup\$ its third part radio module we bought, they claim output to be 30 dbm till radio exit terminal. \$\endgroup\$ – Bharav Sep 12 at 8:18
  • \$\begingroup\$ we have use 0 ohm resistor for now, thats why i asked lab to measure near the radio exit point ( red marks in above given link) \$\endgroup\$ – Bharav Sep 12 at 8:18
  • \$\begingroup\$ 30 dBm where? Measured on the antenna connector or effective radiated power (ERP)? The latter is what's most often used in legislation and standard. There's lots of picky rules for how test houses should measure ERP. You can't tell them to "measure near", they will measure as per some technical spec. \$\endgroup\$ – Lundin Sep 12 at 9:08

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