200kHz bandwidth limitation

M0SJW
Posts: 5
Joined: Thu Jul 14, 2022 1:12 pm
Location: Near London

200kHz bandwidth limitation

#1

Unread post by M0SJW »

I have a few radios with IF taps fitted - FT-857, FT-847 etc. I run external radio with various SDRs. I really like the setup.

One setting which I find a little frustrating is the bandwidth selection within external radio. I have it set to the apparent maximum - 200kHz, but would like access to higher bandwidths. I appreciate some users will be limited by filtering within the radio etc. but for those that have more bandwidth available, and high resolution (or multiple) displays, it would be great to be able to select higher bandwidths.

Might this be possible please?

73,

Sam M0SJW

M0SJW
Posts: 5
Joined: Thu Jul 14, 2022 1:12 pm
Location: Near London

Re: 200kHz bandwidth limitation

#2

Unread post by M0SJW »

I have found a 'dirty' solution while playing around...

Modifying the registry keys in Computer\HKEY_CURRENT_USER\SOFTWARE\SDR-RADIO.com (V3)\ExternalRadio seems to work

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Simon G4ELI
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Location: Mawnan Smith
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Re: 200kHz bandwidth limitation

#3

Unread post by Simon G4ELI »

Ah - good to know, I'll increase this to 500kHz, make a kit & invite you to the test team...
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

M0SJW
Posts: 5
Joined: Thu Jul 14, 2022 1:12 pm
Location: Near London

Re: 200kHz bandwidth limitation

#4

Unread post by M0SJW »

Thank you Simon. Really appreciate the fast response and cleaner solution.

73, Sam

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Simon G4ELI
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Re: 200kHz bandwidth limitation

#5

Unread post by Simon G4ELI »

M0SJW wrote: Thu Jul 14, 2022 4:08 pm Thank you Simon. Really appreciate the fast response and cleaner solution.

73, Sam
This 200kHz is old - from the days of the SDR-IQ etc.
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

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Simon G4ELI
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Re: 200kHz bandwidth limitation

#6

Unread post by Simon G4ELI »

Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

M0SJW
Posts: 5
Joined: Thu Jul 14, 2022 1:12 pm
Location: Near London

Re: 200kHz bandwidth limitation

#7

Unread post by M0SJW »

Thanks, seems to work fine.

I'll add some screenshots later.

73, Sam M0SJW

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Simon G4ELI
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Re: 200kHz bandwidth limitation

#8

Unread post by Simon G4ELI »

M0SJW wrote: Fri Jul 15, 2022 5:26 pm Thanks, seems to work fine.

I'll add some screenshots later.

73, Sam M0SJW
Ta!
Simon Brown :shock:
www.sdr-radio.com

Do not send me direct e-mail, thank-you!

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