I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ?Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps. Thanks David G0MRF
Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF
Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ? Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks David G0MRF
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] 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
Hi David and all--
I share the sentiment about how unfortunate and sad that the IC-9700 will not TX 9600 bps. This is really a shortcoming. Just the other day I got an email from a couple of Falconsat-3 satellite ops from Spain, who are drafting a letter that looks like it's intended to go to Icom, essentially about this very issue, and a few others they have observed. I expect that I am going to join as a signatory in the end. If we do do get a grassroots effort to try and demonstrate how many users need this feature, we might get them to fix in firmware, if that's possible (surely it is!). If this develops into a "sign the petition" thing, I'll let people know. They may not appreciate the number of people that want 9600. Doesn't the EM community use a software that works at 9600? Vari? Anyhow...to the point!
Current production rigs for full duplex 9600? People are reporting success with some of the dual band mobile FM radios. The Kenwood D-710 family is one such (in the Journal, right?). Not much to pick from, really.
So used radios:
IC-910 IC-9100 TS-2000(x) FT-736R TS-790A FT-847
Those are what I'd recommend people to look for. OR--many older FT-736R radios have/are showing up on the market as people upgrade to the 9700 in particular. As I recall, that radio usually required an IF filter upgrade...? The TS-790A is an easy mod to 9600, have done to at least of those rigs over the years.
73,
Mark L. Hammond [N8MH] AMSAT Director and Command Station
On Thu, Mar 25, 2021 at 7:48 AM PE0SAT | Amateur Radio via AMSAT-BB < [email protected]> wrote:
Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ? Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks
David G0MRF
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
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-- With regards PE0SAT Internet web-page http://www.pe0sat.vgnet.nl/ DK3WN SatBlog https://www.satblog.info/ Online Telemetry Forwarder: https://db.satnogs.org/stats/ SatNOGS: https://network.satnogs.org/users/PE0SAT/ irc://chat.freenode.net #Cubesat - Twitter @pe0sat
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
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I'd add the IC-821H to the older rig list, used to use one on GO-32 a long time back.
Ryan, NF0T
On Thu, Mar 25, 2021 at 7:26 AM Mark L. Hammond [email protected] wrote:
Hi David and all--
I share the sentiment about how unfortunate and sad that the IC-9700 will not TX 9600 bps. This is really a shortcoming. Just the other day I got an email from a couple of Falconsat-3 satellite ops from Spain, who are drafting a letter that looks like it's intended to go to Icom, essentially about this very issue, and a few others they have observed. I expect that I am going to join as a signatory in the end. If we do do get a grassroots effort to try and demonstrate how many users need this feature, we might get them to fix in firmware, if that's possible (surely it is!). If this develops into a "sign the petition" thing, I'll let people know. They may not appreciate the number of people that want 9600. Doesn't the EM community use a software that works at 9600? Vari? Anyhow...to the point!
Current production rigs for full duplex 9600? People are reporting success with some of the dual band mobile FM radios. The Kenwood D-710 family is one such (in the Journal, right?). Not much to pick from, really.
So used radios:
IC-910 IC-9100 TS-2000(x) FT-736R TS-790A FT-847
Those are what I'd recommend people to look for. OR--many older FT-736R radios have/are showing up on the market as people upgrade to the 9700 in particular. As I recall, that radio usually required an IF filter upgrade...? The TS-790A is an easy mod to 9600, have done to at least of those rigs over the years.
73,
Mark L. Hammond [N8MH] AMSAT Director and Command Station
On Thu, Mar 25, 2021 at 7:48 AM PE0SAT | Amateur Radio via AMSAT-BB < [email protected]> wrote:
Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ? Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks
David G0MRF
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] 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
-- With regards PE0SAT Internet web-page http://www.pe0sat.vgnet.nl/ DK3WN SatBlog https://www.satblog.info/ Online Telemetry Forwarder: https://db.satnogs.org/stats/ SatNOGS: https://network.satnogs.org/users/PE0SAT/ irc://chat.freenode.net #Cubesat - Twitter @pe0sat
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] 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
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
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Hello all,
Please excuse my ignorance but would any radio work with a TNC at 9600
73s
Stephen G6SGA
On 25 Mar 2021, at 13:37, Ryan Butler <[email protected] mailto:[email protected]> wrote:
I'd add the IC-821H to the older rig list, used to use one on GO-32 a long time back.
Ryan, NF0T
On Thu, Mar 25, 2021 at 7:26 AM Mark L. Hammond <[email protected] mailto:[email protected]> wrote: Hi David and all--
I share the sentiment about how unfortunate and sad that the IC-9700 will not TX 9600 bps. This is really a shortcoming. Just the other day I got an email from a couple of Falconsat-3 satellite ops from Spain, who are drafting a letter that looks like it's intended to go to Icom, essentially about this very issue, and a few others they have observed. I expect that I am going to join as a signatory in the end. If we do do get a grassroots effort to try and demonstrate how many users need this feature, we might get them to fix in firmware, if that's possible (surely it is!). If this develops into a "sign the petition" thing, I'll let people know. They may not appreciate the number of people that want 9600. Doesn't the EM community use a software that works at 9600? Vari? Anyhow...to the point!
Current production rigs for full duplex 9600? People are reporting success with some of the dual band mobile FM radios. The Kenwood D-710 family is one such (in the Journal, right?). Not much to pick from, really.
So used radios:
IC-910 IC-9100 TS-2000(x) FT-736R TS-790A FT-847
Those are what I'd recommend people to look for. OR--many older FT-736R radios have/are showing up on the market as people upgrade to the 9700 in particular. As I recall, that radio usually required an IF filter upgrade...? The TS-790A is an easy mod to 9600, have done to at least of those rigs over the years.
73,
Mark L. Hammond [N8MH] AMSAT Director and Command Station
On Thu, Mar 25, 2021 at 7:48 AM PE0SAT | Amateur Radio via AMSAT-BB <[email protected] mailto:[email protected]> wrote: Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ? Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks
David G0MRF
Sent via AMSAT-BB(a)amsat.org http://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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/ https://www.amsat.org/amsat-documents-and-policies-2/
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With regards PE0SAT Internet web-page http://www.pe0sat.vgnet.nl/ http://www.pe0sat.vgnet.nl/ DK3WN SatBlog https://www.satblog.info/ https://www.satblog.info/ Online Telemetry Forwarder: https://db.satnogs.org/stats/ https://db.satnogs.org/stats/ SatNOGS: https://network.satnogs.org/users/PE0SAT/ https://network.satnogs.org/users/PE0SAT/ irc://chat.freenode.net http://chat.freenode.net/ #Cubesat - Twitter @pe0sat
Sent via AMSAT-BB(a)amsat.org http://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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/ https://www.amsat.org/amsat-documents-and-policies-2/
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Also add TR-851E and TR-751E… worked perfectly for me in the old times of KO-23,KO-2,UO-22….
Antonio-EA1IW
De: Ryan Butler [email protected] Enviado el: jueves, 25 de marzo de 2021 13:37 Para: Amsat - BBs [email protected] Asunto: [AMSAT-BB] Re: 9k6 Radios
I'd add the IC-821H to the older rig list, used to use one on GO-32 a long time back.
Ryan, NF0T
On Thu, Mar 25, 2021 at 7:26 AM Mark L. Hammond <[email protected] mailto:[email protected] > wrote:
Hi David and all--
I share the sentiment about how unfortunate and sad that the IC-9700 will not TX 9600 bps. This is really a shortcoming. Just the other day I got an email from a couple of Falconsat-3 satellite ops from Spain, who are drafting a letter that looks like it's intended to go to Icom, essentially about this very issue, and a few others they have observed. I expect that I am going to join as a signatory in the end. If we do do get a grassroots effort to try and demonstrate how many users need this feature, we might get them to fix in firmware, if that's possible (surely it is!). If this develops into a "sign the petition" thing, I'll let people know. They may not appreciate the number of people that want 9600. Doesn't the EM community use a software that works at 9600? Vari? Anyhow...to the point!
Current production rigs for full duplex 9600? People are reporting success with some of the dual band mobile FM radios. The Kenwood D-710 family is one such (in the Journal, right?). Not much to pick from, really.
So used radios:
IC-910
IC-9100
TS-2000(x)
FT-736R
TS-790A
FT-847
Those are what I'd recommend people to look for. OR--many older FT-736R radios have/are showing up on the market as people upgrade to the 9700 in particular. As I recall, that radio usually required an IF filter upgrade...? The TS-790A is an easy mod to 9600, have done to at least of those rigs over the years.
73,
Mark L. Hammond [N8MH]
AMSAT Director and Command Station
On Thu, Mar 25, 2021 at 7:48 AM PE0SAT | Amateur Radio via AMSAT-BB <[email protected] mailto:[email protected] > wrote:
Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF
Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ?
Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks
David G0MRF
-----------------------------------------------------------
Sent via AMSAT-BB(a)amsat.org http://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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] To unsubscribe send an email to amsat-bb-leave(a)amsat.org http://amsat.org Manage all of your AMSAT-NA mailing list preferences at https://mailman.amsat.org
Yes and IC-275 and IC-475 of course.
Basically anything but the latest and “greatest “ IC-9700. Hi hi.
Mark N8MH
On Thu, Mar 25, 2021 at 11:50 AM Antonio Fernandez [email protected] wrote:
Also add TR-851E and TR-751E… worked perfectly for me in the old times of KO-23,KO-2,UO-22….
Antonio-EA1IW
*De:* Ryan Butler [email protected] *Enviado el:* jueves, 25 de marzo de 2021 13:37 *Para:* Amsat - BBs [email protected] *Asunto:* [AMSAT-BB] Re: 9k6 Radios
I'd add the IC-821H to the older rig list, used to use one on GO-32 a long time back.
Ryan, NF0T
On Thu, Mar 25, 2021 at 7:26 AM Mark L. Hammond [email protected] wrote:
Hi David and all--
I share the sentiment about how unfortunate and sad that the IC-9700 will not TX 9600 bps. This is really a shortcoming. Just the other day I got an email from a couple of Falconsat-3 satellite ops from Spain, who are drafting a letter that looks like it's intended to go to Icom, essentially about this very issue, and a few others they have observed. I expect that I am going to join as a signatory in the end. If we do do get a grassroots effort to try and demonstrate how many users need this feature, we might get them to fix in firmware, if that's possible (surely it is!). If this develops into a "sign the petition" thing, I'll let people know. They may not appreciate the number of people that want 9600. Doesn't the EM community use a software that works at 9600? Vari? Anyhow...to the point!
Current production rigs for full duplex 9600? People are reporting success with some of the dual band mobile FM radios. The Kenwood D-710 family is one such (in the Journal, right?). Not much to pick from, really.
So used radios:
IC-910
IC-9100
TS-2000(x)
FT-736R
TS-790A
FT-847
Those are what I'd recommend people to look for. OR--many older FT-736R radios have/are showing up on the market as people upgrade to the 9700 in particular. As I recall, that radio usually required an IF filter upgrade...? The TS-790A is an easy mod to 9600, have done to at least of those rigs over the years.
73,
Mark L. Hammond [N8MH]
AMSAT Director and Command Station
On Thu, Mar 25, 2021 at 7:48 AM PE0SAT | Amateur Radio via AMSAT-BB < [email protected]> wrote:
Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF
Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ?
Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks
David G0MRF
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] 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
--
With regards PE0SAT Internet web-page http://www.pe0sat.vgnet.nl/ DK3WN SatBlog https://www.satblog.info/ Online Telemetry Forwarder: https://db.satnogs.org/stats/ SatNOGS: https://network.satnogs.org/users/PE0SAT/ irc://chat.freenode.net #Cubesat - Twitter @pe0sat
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
View archives of this mailing list at https://mailman.amsat.org/hyperkitty/list/[email protected] 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
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 Policy available at https://www.amsat.org/amsat-documents-and-policies-2/
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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/
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I have an old IC-821 that recently started having CPU issues and am not sure I will be able to fix it. I am in the process of rewiring the dual PA and front-ends to my PlutoSDR.
With the present availability of SDRs like PlutoSDR, LimeSDR, BladeSDR, etc., it is much easier to use them to receive (and generate) signals, but they lack good filtering and adequate RF power. It would be nice if we could have some commercial solutions.
73, Edson PY2SDR
On Thu, Mar 25, 2021 at 2:15 PM Mark L. Hammond [email protected] wrote:
Yes and IC-275 and IC-475 of course.
Basically anything but the latest and “greatest “ IC-9700. Hi hi.
Mark N8MH
On Thu, Mar 25, 2021 at 11:50 AM Antonio Fernandez [email protected] wrote:
Also add TR-851E and TR-751E… worked perfectly for me in the old times of KO-23,KO-2,UO-22….
Antonio-EA1IW
*De:* Ryan Butler [email protected] *Enviado el:* jueves, 25 de marzo de 2021 13:37 *Para:* Amsat - BBs [email protected] *Asunto:* [AMSAT-BB] Re: 9k6 Radios
I'd add the IC-821H to the older rig list, used to use one on GO-32 a long time back.
Ryan, NF0T
On Thu, Mar 25, 2021 at 7:26 AM Mark L. Hammond [email protected] wrote:
Hi David and all--
I share the sentiment about how unfortunate and sad that the IC-9700 will not TX 9600 bps. This is really a shortcoming. Just the other day I got an email from a couple of Falconsat-3 satellite ops from Spain, who are drafting a letter that looks like it's intended to go to Icom, essentially about this very issue, and a few others they have observed. I expect that I am going to join as a signatory in the end. If we do do get a grassroots effort to try and demonstrate how many users need this feature, we might get them to fix in firmware, if that's possible (surely it is!). If this develops into a "sign the petition" thing, I'll let people know. They may not appreciate the number of people that want 9600. Doesn't the EM community use a software that works at 9600? Vari? Anyhow...to the point!
Current production rigs for full duplex 9600? People are reporting success with some of the dual band mobile FM radios. The Kenwood D-710 family is one such (in the Journal, right?). Not much to pick from, really.
So used radios:
IC-910
IC-9100
TS-2000(x)
FT-736R
TS-790A
FT-847
Those are what I'd recommend people to look for. OR--many older FT-736R radios have/are showing up on the market as people upgrade to the 9700 in particular. As I recall, that radio usually required an IF filter upgrade...? The TS-790A is an easy mod to 9600, have done to at least of those rigs over the years.
73,
Mark L. Hammond [N8MH]
AMSAT Director and Command Station
On Thu, Mar 25, 2021 at 7:48 AM PE0SAT | Amateur Radio via AMSAT-BB < [email protected]> wrote:
Kenwood TS-2000(x)
The only challenge is automatic doppler control and the use of the internal modems at the same time.
So connect and external modem and you are good to go.
Jan PE0SAT
On 25-03-2021 11:10, David G0MRF via AMSAT-BB wrote:
I've had a mail from a Cubesat group asking for recommendations for a 9k6 capable VHF / UHF
Transceiver. The only advice I can offer as an IC9700 owner is.....Don't buy one of these !
I'm aware the IC910 was a favourite ground station radio, but are there other radios that can operate 9k6 without serious modification ?
Some handhelds probably work well these days (Kenwood?) but I suppose for satellite use, the ability to track Doppler is probably important. So a VFO or small steps.
Thanks
David G0MRF
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On 03/25/21 12:50, Edson W. R. Pereira wrote:
I have an old IC-821 that recently started having CPU issues and am not sure I will be able to fix it. I am in the process of rewiring the dual PA and front-ends to my PlutoSDR.
With the present availability of SDRs like PlutoSDR, LimeSDR, BladeSDR, etc., it is much easier to use them to receive (and generate) signals, but they lack good filtering and adequate RF power. It would be nice if we could have some commercial solutions.
73, Edson PY2SDR
Hello Edson,
It seems that an outboard filtering "box", with the appropriate band-select signals from the SDR, would be a good solution.
It could incorporate RF amplifiers, too, to get the signal up to at least 5W. At that point, a conventional external PA could bring the signal level up to 100W or whatever the user chooses.
While I like the ADALM-PLUTO, I don't like the USB interface. USB is finicky even under ideal circumstances. I would much prefer a GigE interface into the Zynq inside that box. It could then be placed anywhere on the network, ideally with PoE so that a separate power supply would not be required.
The design is open-source, so it could be done.
--- Zach N0ZGO
--- Zach wrote:
The [ADALM-PLUTO] design is open-source, so it could be done.
Argh ... that thought has been flittering through my head for a while ... now you went and put it out into the Universe. I just might have to figure how to do it now.
-Joe
On 03/25/21 13:17, Joseph B. Fitzgerald wrote:
--- Zach wrote:
The [ADALM-PLUTO] design is open-source, so it could be done.
Argh ... that thought has been flittering through my head for a while ... now you went and put it out into the Universe. I just might have to figure how to do it now.
Feel free. I have too many projects in-flight right now, so I'll never get to it. ;-)
--- Zach N0ZGO
Hello Zack,
On Thu, Mar 25, 2021 at 2:57 PM Zach Metzinger [email protected] wrote:
On 03/25/21 12:50, Edson W. R. Pereira wrote:
I have an old IC-821 that recently started having CPU issues and am not sure I will be able to fix it. I am in the process of rewiring the dual PA and front-ends to my PlutoSDR.
With the present availability of SDRs like PlutoSDR, LimeSDR, BladeSDR, etc., it is much easier to use them to receive (and generate) signals, but they lack good filtering and adequate RF power. It would be nice if we could have some commercial solutions.
73, Edson PY2SDR
Hello Edson,
It seems that an outboard filtering "box", with the appropriate band-select signals from the SDR, would be a good solution.
Indeed. I have rescued some BPF from old equipment and have been using them for RX for some time. Now I am trying to get TX.
It could incorporate RF amplifiers, too, to get the signal up to at least 5W. At that point, a conventional external PA could bring the signal level up to 100W or whatever the user chooses.
I still have to determine the power level needed to excite the IC-821 PAs. It may be necessary to add an RF buffer.
While I like the ADALM-PLUTO, I don't like the USB interface. USB is finicky even under ideal circumstances. I would much prefer a GigE interface into the Zynq inside that box. It could then be placed anywhere on the network, ideally with PoE so that a separate power supply would not be required.
You are absolutely right. USB also tends to generate a lot of RFI on HF. I intend to put the pluto inside the IC-821 cabinet with a USB to Ethernet converter plus a media converter to transport Ethernet via fiber. This way I can galvanically isolate the PC from the SDR and antenna and also mitigate some RFI issues. But I am not sure how stable the USB/Ethernet will be.
It would be really nice to have a low-cost SDR transceiver like the Pluto or Lime with a native SFP port.
The design is open-source, so it could be done.
True. Anyone would be interested in a community front-end and PA project for SDR interfaces?
73,
Edson, PY2SDR
I guess it depends on the application. I use the TM-D710ga and the TH-D72a for Falconsat-3, but they're FM only. If the broader bandwidth is needed for other modulation schemes I guess they're mostly stuck with used radios.
Another option would be to use an SDR radio with a transverter for TX. I have an SDR-based HF rig (the RS-HFIQ by HobbyPCB), and it can handle that bandwidth without a problem. Of course that solution is not plug-and-play.
-Stephen N8URE
with regard to the FT847:
it does great 9600 FM vhf/uhf. using the DataPort (mindin 6pin). I use it for Falconsat-3.
however, I have no joy for 9600 BPSK for SSB. which would require going thru
the I/O port (allows SSB signals), which does not allow the wider bandwith.
the I/O port works great for 1200bpsk on ssb, and of course PSK31.
if a petition gets going to ICON I would be interested.
thanks
73 Christy KB6LTY
participants (12)
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Antonio Fernandez
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Blinov Igor
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christy hunter
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David G0MRF
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Edson W. R. Pereira
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Joseph B. Fitzgerald
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Mark L. Hammond
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PE0SAT | Amateur Radio
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Ryan Butler
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sjdevience@gmail.com
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Stephen Thornber
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Zach Metzinger