[Hackrf-dev] Amp On or Off

[Tom]

Sorry to hear that Simon,

 

Was the hackrf receiving anything when you keyed up the HF and if so was the RF Amp enabled on the hackrf?

 

From: HackRF-dev [mailto:hackrf-dev-bounces at greatscottgadgets.com] On Behalf Of Simon Kennedy
Sent: Wednesday, 1 July 2015 5:39 PM
To: hackrf-dev at greatscottgadgets.com
Subject: Re: [Hackrf-dev] Amp On or Off

 

Sadly, I am in a position to comment on this.

I have been meticulous in unplugging my HackRF One (& Blue) but at the weekend I forgot and keyed up my HF transmitted for a second with about 50W of RF at 18MHz. That blew the RF amp in the HackRF One.

 

The HackRF was next to the transmitter and the antennas plugged into each are quite close.

 

I am interested to know when it is possible to blow the amp, for example is it possible:

- when the HackRF is unplugged from power;

- when it is connected to an antenna but not powered up;

- when conected to an antenna and powered up but the RF amp switched off?

 

How paranoid do I need to be regarding unplugging?!

 

Simon.

 

On 1 July 2015 at 07:08, Tom <vsboost at hotmail.com <mailto:vsboost at hotmail.com> > wrote:

Thanks Mike,

Have you experienced any blown RF amps due to overloading ? if so do you
know what the specifics were that caused the failure?

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