Comments on: FA-SDR-TRX part #1 – Systems View http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view Amateur Radio on its edge Fri, 03 Sep 2010 00:23:22 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Tobias http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-1514 Tobias Mon, 30 Aug 2010 17:10:02 +0000 http://www.dh1tw.de/?p=281#comment-1514 Hey Tore, Coming back to your questions: 1. The FA-SDR-TRX is designed to host max. 1 Watt PA. Due to physical and thermal limitations it is not possible the interchange the 1 Watt PA with the 5 Watt PA. However the 5 Watt PA can be used as a separate component with the FA-SDR-TRX. in this case there is no need for the 1Watt PA, the few milliwatts output power are sufficient to drive the 5 Watt PA. 2. No, the FA-SDR-TRX does not provide any QSK. as far as I know there is not a single SDR based TRX available which provides QSK like your TS-940. Maybe the Flex5000 is the transceiver which can provide you a kind of QSK. This is a difficult topic since it involves latencies, buffering within your sound card and the way they are integrated in the operating system of your Computer. 3. What kind of computer are you using with your Softrock Kits? Similar to the Full-BK issue, latencies and computer speed can have major impacts on realtime events like using your CW key. 4. absolutely, you can use the FA-SDR-TRX on 8.83 MHz as an Bandscope attached to your transceiver. Just be sure that you don't transmit into the IF stage of your receiver! Hey Tore,

Coming back to your questions:
1. The FA-SDR-TRX is designed to host max. 1 Watt PA. Due to physical and thermal limitations it is not possible the interchange the 1 Watt PA with the 5 Watt PA. However the 5 Watt PA can be used as a separate component with the FA-SDR-TRX. in this case there is no need for the 1Watt PA, the few milliwatts output power are sufficient to drive the 5 Watt PA.

2. No, the FA-SDR-TRX does not provide any QSK. as far as I know there is not a single SDR based TRX available which provides QSK like your TS-940. Maybe the Flex5000 is the transceiver which can provide you a kind of QSK. This is a difficult topic since it involves latencies, buffering within your sound card and the way they are integrated in the operating system of your Computer.

3. What kind of computer are you using with your Softrock Kits? Similar to the Full-BK issue, latencies and computer speed can have major impacts on realtime events like using your CW key.

4. absolutely, you can use the FA-SDR-TRX on 8.83 MHz as an Bandscope attached to your transceiver. Just be sure that you don’t transmit into the IF stage of your receiver!

]]> By: Tore Sandström SM7CBS http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-1497 Tore Sandström SM7CBS Sun, 29 Aug 2010 04:07:44 +0000 http://www.dh1tw.de/?p=281#comment-1497 Hello! I tried to find the e-mail to DL2EWN with no sucess! But I hope you Tobias can comment some questions. I am not so good in german so I hope information will be in english one day. So my wunderings....: 1. Is it possible to put in the 5 watt PA instead of the 1 watt? 2. As far I can se there is no QSK so one has the manually change from tx to rx. I prefer CW and have full qsk in my TS940. Any idea when this kit will have automatic qsk? 3. I have built some softrocks kit and know that the sidetone will have a delay that make it difficult to use the sidetone for doing CW manually. But you have probably solved this? If not...when and how do you plan to do it? I am very interested so I need to know above before decision. BTW. There is a SDR-IF from USA called LP-PAN and it can bu used as an IF-rx to my TS940 that has an IF of 8,83 mHz. Would it be possible to by such a FA-SDR for just that frequency from you? Regards Tore Sandström SM7CBS Hello!
I tried to find the e-mail to DL2EWN with no sucess! But I hope you Tobias can comment some questions.
I am not so good in german so I hope information will be in english one day. So my wunderings….:
1. Is it possible to put in the 5 watt PA instead of the 1 watt?
2. As far I can se there is no QSK so one has the manually change from tx to rx.
I prefer CW and have full qsk in my TS940. Any idea when this kit will have automatic qsk?
3. I have built some softrocks kit and know that the sidetone will have a delay that make it difficult to use the sidetone for doing CW manually. But you have probably solved this? If not…when and how do you plan to do it?
I am very interested so I need to know above before decision.
BTW. There is a SDR-IF from USA called LP-PAN and it can bu used as an IF-rx to my TS940 that has an IF of 8,83 mHz. Would it be possible to by such a FA-SDR for just that frequency from you?
Regards
Tore Sandström SM7CBS

]]> By: Tobias http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-1388 Tobias Mon, 09 Aug 2010 13:44:43 +0000 http://www.dh1tw.de/?p=281#comment-1388 Hi Carmelo, it is very likely that FA-SY2 is NOT working properly with the FA-SDR-TRX. The reason is, that FA-SY2 provides (a much lower) LVDS level. On the other hand, FA-SY1 provides CMOS level. It is not possible to control the FA-SY1 in a FA-SDR-TRX with the FA-SY-SP out of the Box. However changing the controller in the FA-SY1 might be a feasable workaround. But take into consideration that PTT and CW won't be available anymore with the changed controller. Hi Carmelo,
it is very likely that FA-SY2 is NOT working properly with the FA-SDR-TRX. The reason is, that FA-SY2 provides (a much lower) LVDS level. On the other hand, FA-SY1 provides CMOS level.
It is not possible to control the FA-SY1 in a FA-SDR-TRX with the FA-SY-SP out of the Box. However changing the controller in the FA-SY1 might be a feasable workaround. But take into consideration that PTT and CW won’t be available anymore with the changed controller.

]]> By: Carmelo http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-1365 Carmelo Thu, 05 Aug 2010 20:05:19 +0000 http://www.dh1tw.de/?p=281#comment-1365 Hello, I'm IW4BYK and I have a question to ask in the FA-SDR kit proposed FA-SY1 and the new FA-SY2 be used both? Which is better to use? And another, I can use FA-SY-SP to directly control the frequency of FA-SY# using FA-SDR? Many thanks for your very comprehensive article. Regards, Carmelo Toscano. Hello,
I’m IW4BYK and I have a question to ask in the FA-SDR kit proposed FA-SY1 and the new FA-SY2 be used both? Which is better to use?
And another, I can use FA-SY-SP to directly control the frequency of FA-SY# using FA-SDR?

Many thanks for your very comprehensive article.

Regards, Carmelo Toscano.

]]> By: Kees PA5CW http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-1178 Kees PA5CW Wed, 23 Jun 2010 20:38:15 +0000 http://www.dh1tw.de/?p=281#comment-1178 Just build the FA-SDR, most time took the software installation, read carefully. 1. replace DLL from CD 2.in Power sdr define Softroc at setup with correct xtal freq from si 570, then select flex1000 as tranceiver! Also tick the USB box, or else PTT will not work. (seems strange but else you dont get flat frequency on display). Kees PA5CW Just build the FA-SDR, most time took the software installation, read carefully.
1. replace DLL from CD
2.in Power sdr define Softroc at setup with correct xtal freq from si 570,
then select flex1000 as tranceiver!

Also tick the USB box, or else PTT will not work.

(seems strange but else you dont get flat frequency on display).

Kees PA5CW

]]> By: Pascal http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-966 Pascal Thu, 13 May 2010 20:59:11 +0000 http://www.dh1tw.de/?p=281#comment-966 I wait for the kit ! available at end of May only Do you think it may work also on 6m with the right filters ? I wait for the kit ! available at end of May only
Do you think it may work also on 6m with the right filters ?

]]> By: Tobias http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-576 Tobias Mon, 08 Mar 2010 00:13:52 +0000 http://www.dh1tw.de/?p=281#comment-576 Hey Hank, the FA SDR TRX kit should be available at the end of March 2010. As soon as the kit or additional information is released I'll post an update on this website! You might also check directly the publisher's webshop, where the kit is listed as "BX-200" http://bit.ly/9RWOf6 73 & enjoy SDR, Tobias Hey Hank,

the FA SDR TRX kit should be available at the end of March 2010. As soon as the kit or additional information is released I’ll post an update on this website!

You might also check directly the publisher’s webshop, where the kit is listed as “BX-200″
http://bit.ly/9RWOf6

73 & enjoy SDR,
Tobias

]]> By: Hank Wolfla http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-575 Hank Wolfla Sun, 07 Mar 2010 23:10:32 +0000 http://www.dh1tw.de/?p=281#comment-575 Please advise when this kit might be available for purchase and if you have an instruction and construction manual available. Thank you, Hank Wolfla Greenfield, IN k9lzj Please advise when this kit might be available for purchase and if you have an instruction and construction manual available.

Thank you,

Hank Wolfla
Greenfield, IN
k9lzj

]]> By: Tobias http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-283 Tobias Mon, 25 Jan 2010 13:21:05 +0000 http://www.dh1tw.de/?p=281#comment-283 Hola Alfredo! los circuitos estan publicados en tres articulos de la revista "Funkamateur". Estan en los numeros Oct/2009, Nov/2009 y Dec/2009. La revista esta en aleman. Desgraciadamente no se puede descargar los articulos. Le propongo de comprar el CD anual de 2009. La CD cuesta 12,90€ y contiene todos los articulos de la revista de 2009. Mandan el CD en todo el mundo. Aqui puede encontrar el CD en el online-shop: http://bit.ly/57Y7Sa . 73 Toby DH1TW Hola Alfredo!

los circuitos estan publicados en tres articulos de la revista “Funkamateur”. Estan en los numeros Oct/2009, Nov/2009 y Dec/2009. La revista esta en aleman. Desgraciadamente no se puede descargar los
articulos. Le propongo de comprar el CD anual de 2009. La CD cuesta 12,90€ y contiene todos los articulos de la revista de 2009. Mandan el CD en todo el mundo. Aqui puede encontrar el CD en el online-shop: http://bit.ly/57Y7Sa .

73 Toby
DH1TW

]]> By: lu8fdz http://www.dh1tw.de/fa-sdr-trx-software-defined-radio-a-system-view/comment-page-1#comment-282 lu8fdz Mon, 25 Jan 2010 12:37:25 +0000 http://www.dh1tw.de/?p=281#comment-282 donde puedo ver los circuitos ? donde puedo ver los circuitos ?

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