Return-Path: Received: (qmail 22053 invoked from network); 21 Dec 2001 08:26:26 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 21 Dec 2001 08:26:26 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 3061 invoked from network); 21 Dec 2001 08:26:20 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 21 Dec 2001 08:26:20 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16HKsu-0003sd-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 21 Dec 2001 08:18:28 +0000 Received: from ns3.swh.sk ([192.108.125.37]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16HKsq-0003sX-00 for rsgb_lf_group@blacksheep.org; Fri, 21 Dec 2001 08:18:25 +0000 Received: from hermes.swh.sk (hermes.swh.sk [192.108.125.60]) by ns3.swh.sk (8.11.0/8.11.0) with ESMTP id fBL8HZt24717 for ; Fri, 21 Dec 2001 09:17:35 +0100 Received: from btss101a.swh.sk (btss.swh.sk [139.24.136.15]) by hermes.swh.sk (8.9.3/8.9.2) with ESMTP id JAA10546 for ; Fri, 21 Dec 2001 09:17:26 +0100 (MET) Received: by btss.swh.sk with Internet Mail Service (5.5.2653.19) id ; Fri, 21 Dec 2001 09:17:23 +0100 Message-ID: <29BDD4F529FCD311B631009027357C4E0333C10B@btss103a.swh.sk> From: "Gasparik Richard" To: rsgb_lf_group@blacksheep.org Subject: LF: RE: Re: DDS calibration... Date: Fri, 21 Dec 2001 09:17:17 +0100 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi Johan and all LF-ers... It's working fine. I calibrated my DDS with the reference frequency of DCF39 on 138.830 and it looks good. On Albertos (I2PHD) spectrogram is my frequency exact on 135.922 kHz. Just received an E-mail from CT1DRP, he detected a short sequence unfortunately not readable easily but on the frequency. So, thanks all for the help. I'll continue in my test. Best regards... 73 de Rich OM2TW -----Original Message----- From: Johan Bodin [mailto:sm6lkm.jbeab@swipnet.se] Sent: Thursday, December 20, 2001 5:28 PM To: rsgb_lf_group@blacksheep.org Subject: LF: Re: DDS calibration... Rich, >It's possible to save this calibration in EEPROM ? >Anybody knows how to do it ? Yes, I wrote the firmware... 1. If the CAL switch is held down at power-on, the default calibration value (corresponding to 25.0000... MHz clock) is loaded into EEPROM and the display will show "CAL=Default" for a few seconds. 2. If the CAL switch is pressed temporarily during operation, the software enters calibration mode and the calibration constant can be changed with the VFO knob. Just press the CAL switch again to store the new calibration in EEPROM and resume normal operation. If you see "CAL=Default" on the display every time you start the DDS, there is a problem with the CAL switch. The CAL switch should be a normally open momentary pushbutton that connects PIC pin 11 (RB5) to ground via a 470-820 ohm resistor. 73 de Johan SM6LKM