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On Tue, Jun 4, 2024 at 07:38 AM, Derek H wrote:

I'm a sound engineer not an RF engineer let's just start there.. Wondering if I should be always using an attenuator on the input of my TinySA Ultra to protect it or only if I observe a signal that's nearing 0dB?

Better always have 10 or 20dB attenuator connected to the input

Will the TinySA warn you somehow of an overload?

Yes, but the damage could already have happened.

A little background.. I'm using the TinySA to scan mostly VHF and UHF but sometimes 2.4GHz and 5GHz to help coordinate and troubleshoot our wireless mics and wireless video equipment. Generally the power levels we deal with are well under 1W but some video transmitters go higher... I am often wearing an active wireless mic myself (100mW transmitter) for coms purposes. Does operating the TinySA very close to the a transmitter like that run the risk of overloading or damaging it?

Yes, but with a 20 dB attenuator connected between an antenna and the tinySA you will be mostly safe,

Can I connect the output of a transmitter directly to the tinySA with a piece of coax without an attenuator or is this bad for both devices?

Yes if the antenna's make direct contact or you connect the transmitter directly to the tinySA you can easily destroy the tinySA.? With transmitters operating at 100mW and a 20dB attenuator connected to the input of the tinySA you are perfectly safe

Sorry for the basic questions. Just looking for some best practice basics. If I'm just going to buy one attenuator for this purpose what's a good value? 10/20/30 d

20dB, you can buy any cheap 2 W attenuator

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