[Hackrf-dev] Max TX power

[Matteo Terzi]

Hi all,
how can I set the maximum TX power of the HackRF?
On gnu radio I'm using a "multiply const=6" and the parameter "IF Gain=47"
(of the osmocom sink). Any other method or strategies??
Thanks

Matteo

[Chuck McManis]

Have you considered a separate power amplifier ? While the HackRF can
transmit a few milliwatts of power if you're actually going to use it to
transmit something "for real" (rather than just use it for experiments) you
might consider getting a filter for the band of interest and a separate
power amplifier. That does two things for you, first it prevents the
transmissions of spurious signals (harmonics, overtones, etc) that arise
from the nature of how the signal is created. Second it lets you accurately
control the effective radiated power of your antenna and power amplifier
set up and stay within any transmission restrictions for the spectrum on
which you are transmitting. As a bonus it protects the output stage of your
HackRF from reflected transmission signals coming from mismatched
transmission lines.

Post by Matteo Terzi
Hi all,
how can I set the maximum TX power of the HackRF?
On gnu radio I'm using a "multiply const=6" and the parameter "IF Gain=47"
(of the osmocom sink). Any other method or strategies??
Thanks
Matteo
--
Matteo TERZI
Google Gmail Member
_______________________________________________
HackRF-dev mailing list
https://pairlist9.pair.net/mailman/listinfo/hackrf-dev

[Mitja kocjančič]

can someone recomend a chep 1 to 100watts amp and filter (preferebly all in
one) for FM Broadcast Band (also covering 64 to 76Mhz)

Post by Chuck McManis
Have you considered a separate power amplifier ? While the HackRF can
transmit a few milliwatts of power if you're actually going to use it to
transmit something "for real" (rather than just use it for experiments) you
might consider getting a filter for the band of interest and a separate
power amplifier. That does two things for you, first it prevents the
transmissions of spurious signals (harmonics, overtones, etc) that arise
from the nature of how the signal is created. Second it lets you accurately
control the effective radiated power of your antenna and power amplifier
set up and stay within any transmission restrictions for the spectrum on
which you are transmitting. As a bonus it protects the output stage of your
HackRF from reflected transmission signals coming from mismatched
transmission lines.

Post by Matteo Terzi
Hi all,
how can I set the maximum TX power of the HackRF?
On gnu radio I'm using a "multiply const=6" and the parameter "IF
Gain=47" (of the osmocom sink). Any other method or strategies??
Thanks
Matteo
--
Matteo TERZI
Google Gmail Member
_______________________________________________
HackRF-dev mailing list
https://pairlist9.pair.net/mailman/listinfo/hackrf-dev

_______________________________________________
HackRF-dev mailing list
https://pairlist9.pair.net/mailman/listinfo/hackrf-dev

[Geoffrey Feldman]

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