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#1 2013-09-24 20:46:29

elektryk
Contributor
Registered: 2009-09-10
Posts: 43

Antenna tuning, are my antenna good?

How many voltages should show 'hf tune' on "good" antennas? I have values 12V without card in range, about 6V when card is near.
Are those values ok? or my antenna needs to be better tuned?

Why am I asking? I have some errors in communication and snooping and suspect problem with detuned antenna.

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#2 2013-09-24 21:02:18

asper
Contributor
Registered: 2008-08-24
Posts: 1,409

Re: Antenna tuning, are my antenna good?

For 13.56MHz 12/14 volt is a good voltage.
For 125kHz 25/35 volt is good.

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#3 2013-09-26 12:36:44

elektryk
Contributor
Registered: 2009-09-10
Posts: 43

Re: Antenna tuning, are my antenna good?

asper wrote:

For 13.56MHz 12/14 volt is a good voltage.

And drop to 6V when card is in range is ok?

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#4 2013-09-26 15:52:05

app_o1
Contributor
Registered: 2013-06-22
Posts: 244

Re: Antenna tuning, are my antenna good?

elektryk wrote:
asper wrote:

For 13.56MHz 12/14 volt is a good voltage.

And drop to 6V when card is in range is ok?

Mine drops by 5 V. And it is "industrial made"

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