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This category was created to discuss various questions and topics regarding ExpertSDR3 operation.

TOPIC: out of band TX

out of band TX 02 Jan 2024 13:42 #1

  • ON7WP
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Dear All,

I generally dislike radios to tell me where I may or may not transmit. This is so American :x Especially when trying to find the SWR limits of an antenna it can be very handy to transmit low power outside of band to find the edges.


My SunSDRPro2 does not allow me to do so, but I guess this is just some command or setting ?

Anybody ??
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out of band TX 02 Jan 2024 13:58 #2

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...and then one does not run into issues like the predefined 60m band too small for the English allocations...
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out of band TX 02 Jan 2024 14:38 #3

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It has nothing to do with America. It is a Hamradio and you do need a licence to operate ham radio frequencies. If you want to go outside ham radio frequencies you have to modify software or hardware
to make it working on tx outside the ham bands. For example Maritime shortwave radios have other frequencies and another Licence.
Happy new 2024
de sm6usu Svante
sm6usu
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out of band TX 02 Jan 2024 14:58 #4

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another reason, I have a Maritime license (GMDSS-GOC). My Icom M710 transmits everywhere...

I just dislike idiot limitations...
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out of band TX 02 Jan 2024 16:14 #5

  • Tom W3FRG
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This is why I have the Rig Expert Antenna Analyzer.
I sweep over the desired range to find the VSWR / Zo of the antenna under test.
And make the required adjustments.
To just do a sanity check I use SDCx64 which uses the rig's bandwidth.

Happy New Year
Tom W3FRG
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out of band TX 02 Jan 2024 17:05 #6

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If you have easy acces to your 710 use it to find the swr spot on your Sunsdr antenna.
sm6usu
sm6usu
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out of band TX 05 Jan 2024 15:53 #7

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I have plenty of network analysers to check my antennas. I just want my SunSDRPro2 to transmit from 1,5-30 MHz like all my other radios do.

Soon when WW3 has started nobody will care about rules any more, we will just need comms :dance:
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out of band TX 05 Jan 2024 17:23 #8

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I think you are over the limit.
And if you just need your SUN to transmit on all freq. spectrum on HF, go back on ESDR2.
73 Pibo S58WW
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Last Edit: 05 Jan 2024 17:26 by S58WW.
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