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SA Ultra shows signal at 192.100MHz. Tuned that on a radio and heard steady beeps that seem to come from the SA. when I move the radio away, they are inaudible and when I move the marker with the jog wheel they match my movements. And if I hold the jog wheel, the beeps stop while the screen is frozen.?

is this normal, and how many other signals are being produced by the device itself?

Yes, this is normal. Any electronics device will emit some radiation.?
Try other devices. You will be suprised by the emissions from a phone, computer, keyboard, mouse, monitor, etc...
Even the radio you are using to listen to the tinySA will radiate.
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On Wed, Jun 12, 2024 at 06:21 AM, kent irving wrote:

is this normal, and how many other signals are being produced by the device itself?

All digital (and some analogue) devices emit RF noise, the level depends on how well it was designed.

The emissions from the TinySA Ultra are at a very low level and should not be of any concern.

You will see the emissions when using the telescopic antenna supplied with the SA, but this is really only intended to allow folks to get started quickly, and to be able to see some signals. It is useful for interference hunting in the home, but for more accurate and noise free performance, an externally connected antenna is preferable.

Regards,

Martin