[hamradio-list] =?windows-874?b?IFJlOiBbaGFtcmFkaW8tbGlzdF0gqti0IEtpdHMgU0RS?=

  • From: "Pornchai Semjang" <pornchai.s@xxxxxxxx>
  • To: <hamradio-list@xxxxxxxxxxxxx>
  • Date: Tue, 1 May 2007 09:17:23 +0700

��������ç����ա˹��¤�Ѻ ����ǡѺ Bandwidth �������ö��ҹ�� ���͡��Ң������Ѻ CODEC ��� ��ǹ�ҡ���� Soundcard ����ͧ


Key point for the receiver performance is PC soundboard. Therefore soundcards recommended for the SDR-1000 (M-Audio Delta 44 and Delta 66) would be best performers, also several Creative products would be acceptable. But I used this receiver with several onboard audio chips (mainly AC'97), and they are OK. One of the main aspects is soundcard 16-bit or 24-bit, 16-bit allow to use 48 kHz range of band, 24-bit - 96 kHz - almost full old 40 meter band with same VFO setting

����� Soundcard 16bit ���������ҳ 48 kHz ��� 24bit ���� 96kHz �ҡ ������� Reference ����Ҥ Front End ���Ӣ�鹨��Ѻ���������ᶺ����� ���ǵ�� Software �����͡�����Ҩ��Ѻ�ѧ�������ç�˹ ����͹��һ�Ѻ�������ͧ����ͧ�Է�� �ѧࡵ�ҡ Spectrum � ������ѹ���ʴ� Signal ����Ѻ����ҷ�������ʹᶺ������� ������һ�Ѻ���͡��Ҩпѧ Signal �ҡ�ç�˹ �ѹ�����ҡ��� ���������������������������dz�˹�ͧᶺ������� ���Һ͡��ҵ�� Software �������ö�ѺẺ Dual ���Ϳѧ������� 2 ��ͧ������ �ѹ�� �͡�ѹ�ѧ������������ͧ���ѧ����������� ��ҧ�ҡ�Ѩ�غѹ�������ͧ�觨��� Monitor �������繡�� Monitor ������§�ͧ�������� Monitor �ҡ�ѭ�ҳ RF ����͡仨�ԧ� �� SRD ����ö�ѧ�ҡ RF �����

���ش�ʹ�ͧ��äԴ����ؤ�����¡������ �Ѻ�ҡ�� Echolink ����� DRM �����ѧ�� SDR �ա

73 de
HS2JFW

----- Original Message ----- From: "Pornchai Semjang" <pornchai.s@xxxxxxxx>
To: <hamradio-list@xxxxxxxxxxxxx>
Sent: Tuesday, May 01, 2007 8:36 AM
Subject: [hamradio-list] Re: [hamradio-list] �ش Kits SDR


The Front Ends
This part is essentially a down-converter from the signal frequency down to
baseband and vice versa. The baseband is made up of two signals, the
in-phase (I) and quadrature (Q) elements, these are created by having two
mixers in each leg and two local oscillator signals, 90? apart. The usable
bandwidth is set by the sampling rate of the CODEC. The same hardware design
may be used for both the Hilbert and Weaver methods of modulation and/or
demodulation.



�ҡ��������ѹ���¹Դ..��ҷ����ҹ�١羺��Ҥ������������ö������ѧ�ҡ�Ӥ���������ͧ����
Mix ���Ǣ������Ѻ��������ö�ͧ��� CODEC �ʡ�÷� Sampling ��Ҩ���բ�Ҵ�˹

CODEC ��͡������¹����ѭ�ҳ ���§������ٻ Analog ���������ٻẺ ���§
Digital �ػ�ó��� SDR ����͵�� Sound Card �������� CODEC �¡�͡��
Hardware �ǡ DSP ���� ������Ѻ SDR ���ҧ���¡礧�� Sound Card
����դس�Ҿ˹���

���觷��������������鹤��Ҿ� http://uwsdr.berlios.de/

73 de

HS2JFW


----- Original Message ----- From: TOFFY
To: hamradio-list@xxxxxxxxxxxxx
Sent: Monday, April 30, 2007 3:44 PM
Subject: [hamradio-list] Re: [hamradio-list] �ش Kits SDR


���ʴդ�Ѻ

������ѹ���ʹ��ҡ��� ������������+����ҡ 5555
�����������ѡ��� �ԡ���� ���¤���������ǡѺ��������ҧ��ǧ����ͧ����Ѻ
����������§��ǹ��ҧ�������(Direct conversion) ��觨���䴹��ԡ��鹨��٧�ҡ

ʧ�������ͧ �������ҧ�ͧ������Ф�Ѻ ���������ҧ�������
��ص� �����Ҽ�Ե��������� 7.05 MHz.��� ������ö���� 7.0 - 7.1 MHz.
�����������


73s de Toff
HS0NNU





----- Original Message ----
From: "HS2JFW, Joe" <hs2jfw@xxxxxxxx>
To: hamradio-list@xxxxxxxxxxxxx
Sent: Saturday, April 28, 2007 3:40:57 PM
Subject: [hamradio-list] �ش Kits SDR


Kits SDR

��������ͤ�Ѻ ��������
�ӧҹ�����ѹ������������������������ö������ͧ�Ѻ������� 7MHz ������
����Ѻ���������ö�ӧҹ����硷�͹ԡ���� ��Ҩ��ͧ�Ӵ�
�Դ��Ҥ��繤��á�ͧ����¹� ��ҷ��� �ͧ����������´������Ѻ

http://www.qrz.lt/ly1gp/SDR/

����Ѻ Software ���ͧ���������§������� FT-1000 �����ҧ�� Software
Download �������Ѻ http://support.flex-radio.com/Downloads.aspx
��ͧ�������͡ PowerSDR 1.x ��ͧ������͡ Software:FlexRadio version ����ش���
1.8 ��Ѻ

�ҡ����ͧ Download ���§ Wave
���Դ������������ع���ع�ҿѧ���§������ҧ�٤�Ѻ
http://support.flex-radio.com/Downloads.aspx
��ͧ�������͡ PowerSDR 1.x ��ͧ������͡ Audio : (I/Q) ���ǡ� Download
������

73 de
HS2JFW

===========================================================
The Ham Radio in Thailand mailing list
��Ѥü�ҹ Web : //www.freelists.org/list/hamradio-list
��ҹ��ͤ�����͹��ѧ : //www.freelists.org/archives/hamradio-list
�Դ��ͼ����� : hamradio-list-admins@xxxxxxxxxxxxx
===========================================================





Ahhh...imagining that irresistible "new car" smell?
Check out new cars at Yahoo! Autos.
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

===========================================================
The Ham Radio in Thailand mailing list
��Ѥü�ҹ Web : //www.freelists.org/list/hamradio-list
��ҹ��ͤ�����͹��ѧ : //www.freelists.org/archives/hamradio-list
�Դ��ͼ����� : hamradio-list-admins@xxxxxxxxxxxxx
===========================================================

--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

===========================================================
The Ham Radio in Thailand mailing list
��Ѥü�ҹ Web : //www.freelists.org/list/hamradio-list
��ҹ��ͤ�����͹��ѧ : //www.freelists.org/archives/hamradio-list
�Դ��ͼ����� : hamradio-list-admins@xxxxxxxxxxxxx
===========================================================

Other related posts:

  • » [hamradio-list] =?windows-874?b?IFJlOiBbaGFtcmFkaW8tbGlzdF0gqti0IEtpdHMgU0RS?=