Hello,
Are there any SDR dongles that will do full-duplex on transmit from a radio right next to it? I have a Nesdr SDR, but it desenses with the linear birds and FM birds alike.
Thanks! 73 de W0AAE
SDR radios/dongles don't generally have front end filtering. That's for you to provide.
On 27/06/2021 23:23 Kees Van Oosbree arrl.kvan@gmail.com wrote:
Hello,
Are there any SDR dongles that will do full-duplex on transmit from a radio right next to it? I have a Nesdr SDR, but it desenses with the linear birds and FM birds alike.
Thanks! 73 de W0AAE ----------------------------------------------------------- Sent via AMSAT-BB(a)amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Acceptable Use and Privacy Policies available at https://www.amsat.org/about-amsat/ View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/amsat-bb@amsat.org To unsubscribe send an email to amsat-bb-leave(a)amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Nigel A. Gunn, ///shoulders.outwards.resolutions tel +1-937-971-0366 Amateur Radio G8IFF W8IFF and GMRS WRBV701, e-mail nigel@ngunn.net www http://www.ngunn.net
On 6/27/21 10:47 PM, Nigel A. Gunn G8IFF/W8IFF wrote:
SDR radios/dongles don't generally have front end filtering. That's for you to provide.
On 27/06/2021 23:23 Kees Van Oosbree arrl.kvan@gmail.com wrote:
Are there any SDR dongles that will do full-duplex on transmit from a radio right next to it? I have a Nesdr SDR, but it desenses with the linear birds and FM birds alike.
This suggestion is RX only:
The FUNcube Dongle Pro+ _does_ have front-end filters, including highly effective (and highly lossy -- usually) SAW filters for 2m and 70cm.
You'll want to put a LNA at the antenna, for best system performance, and the FCDP+ has a built-in bias tee to supply DC on the coax.
http://www.funcubedongle.com/?page_id=1073
I do have one of these but I have not tested this dongle for de-sense.
--- Zach N0ZGO
participants (3)
-
Kees Van Oosbree -
Nigel A. Gunn G8IFF/W8IFF -
Zach Metzinger