If they're unlicensed, they will be intentional radiators subject to
47CFR15 Subpart C [15.201 et seq] which imposes field strength limits
that vary with frequency. 15.201(b) may also require certification.
Depending on choice of frequency, 150 mW may be way too high since in
the 1.7 - 30 MHz range, the limit is 30 uV/m at 30 m. I think Wayne has
hit on a great idea, it's just going to take some Part 15 engineering.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 10/17/2019 4:07 PM, Jeff Kabel wrote:
1) Wouldn't it be better to use one of the ISM bands? Then licensing is not
a problem. I'd feel uncomfortable giving radios that operate in the ham
bands to people without a license. There are bands 6.765-6.795MHz,
13.553-13.567MHz, and 26.957-27.283 close to our 40, 20, and 12/10 meter
bands, and a number of bands in the VHF+ range. The 13MHz one is used by
the HiFER <https://en.wikipedia.org/wiki/LowFER> experimenters already.
There are also the LowFER and MedFER bands.
2) Does the pixie not meet the requirements? They're cheap ($3-5 on eBay),
low power (~150mW), and have QSK. The kits you buy don't have a volume
control, but that is simple to add.
-- Jeff aa6xa
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