I enjoyed reading your review of the 2.4GHz AV senders in the July 2016 issue. I was glad to see that the approximate power output of these devices is only -23dBm. Many readers may be unaware, but the General User Radio License (GURL) for Short Range Devices (SRDs) in New Zealand has special condition 13 applied to devices in the 2.4GHz band. This states that devices with an EIRPS of 0d Bm or greater must use frequency hopping or digital modulation techniques. Therefore, if the generic model you reviewed were to include a power amplifier of not much higher power, it would become illegal to operate in New Zealand, simply because of its fixed frequency. Thankfully, this model does not.
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