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 marklhammond@gmail.com 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 < amsat-bb@amsat.org> 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/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

-- 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/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

---

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/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

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 rbutler@tsss.org Enviado el: jueves, 25 de marzo de 2021 13:37 Para: Amsat - BBs amsat-bb@amsat.org 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 <marklhammond@gmail.com mailto:marklhammond@gmail.com > 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 <amsat-bb@amsat.org mailto:amsat-bb@amsat.org > 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/amsat-bb@amsat.org 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

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 marklhammond@gmail.com 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 afesan@gmail.com 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 rbutler@tsss.org *Enviado el:* jueves, 25 de marzo de 2021 13:37 *Para:* Amsat - BBs amsat-bb@amsat.org *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 marklhammond@gmail.com 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 < amsat-bb@amsat.org> 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/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

--

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/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

---

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/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

---

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

--

Mark L. Hammond [N8MH]

---

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

--- 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

Hello Zack,

On Thu, Mar 25, 2021 at 2:57 PM Zach Metzinger zmetzing@pobox.com 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