Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_DNSWL_MED, SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id v67Anj5b029763 for ; Fri, 7 Jul 2017 12:49:47 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dTQkx-0002Fh-DK for rs_out_1@blacksheep.org; Fri, 07 Jul 2017 11:45:03 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dTQkv-0002FW-BV for rsgb_lf_group@blacksheep.org; Fri, 07 Jul 2017 11:45:01 +0100 Received: from mail-vk0-x22d.google.com ([2607:f8b0:400c:c05::22d]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dTQkr-0000kJ-8i for rsgb_lf_group@blacksheep.org; Fri, 07 Jul 2017 11:44:59 +0100 Received: by mail-vk0-x22d.google.com with SMTP id r125so15315609vkf.1 for ; Fri, 07 Jul 2017 03:44:56 -0700 (PDT) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=uc/+d+usSE6oKZ+XgXozU+iWSjQ37Z87E0tBYOlKsdE=; b=WXENdts4SBrj74eKgY1P1ZxQgx63yL+bLhvtNi7zYKV5Xp4KC7rH9Flxe/fXQvBr9X ahZ9MCsN3BhZxV07Mlr0ySKDDmuFP0ROsgcOC+GPJSRgxWl7zVXRL/y2iNsCyVDMaEyU IcoartHJD75ZJYjTSIZOD+QuX+3GJ0Vu4Tz9LYo4JcIzyJtVUA9bJfFQ3ib5IMcmIvZW oao9nkTXRegu+EEytRNJ2waP6MrZCyCSGN5Q7gc/m0enH8BO6t0sybKZgd+TnYm8H1SZ l9yaWiW9XA96AdJAIpoTI/L8vQs0YEnYJXWrnlsAyH+EQpugp2OpywHvAUKXeZmXeBaA wV1Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=uc/+d+usSE6oKZ+XgXozU+iWSjQ37Z87E0tBYOlKsdE=; b=kYQJ1hI2rYTlUaJ9rxKJYeDUCJSDc6Z2gugHVEkpqPepGxX+/ZWYeAAoIQWZOdR2Fm FIJoY0kzg6djkbRaZuy7+EwQrsryQo8fOy+zAjGa2eFzB2m2/ASXj5J5OQ11LBSBpozW gwFIg4OWTUlULfqybbyyktZnMHAXrYKQoNIuJKm5Knt9PNhsg+IUvBQrPbp61DCX+ine VfreL12BhT706Bvjg1Oui60JFQHoM5UBoxMBfFtOfVXl3dOu/AJPOz4+9lV74TZ4Jqdp s0Wzm/ufwNP6bwTxQCvuMitWTMwQSlSMGDNPlxGZPNWT4mxDFctCDHEEzqETNH/GKlQd cZPA== X-Gm-Message-State: AIVw112txGI5/BAT6b6ZIF0oIluWtLTzvn12cDCWvCCpHbbJxFFepZv3 2WTaxoFXJbiZ0rJd/o6dg9bgIZbnpw== X-Received: by 10.31.67.80 with SMTP id q77mr295644vka.140.1499424294099; Fri, 07 Jul 2017 03:44:54 -0700 (PDT) MIME-Version: 1.0 Received: by 10.176.18.202 with HTTP; Fri, 7 Jul 2017 03:44:53 -0700 (PDT) Received: by 10.176.18.202 with HTTP; Fri, 7 Jul 2017 03:44:53 -0700 (PDT) In-Reply-To: <15d1c1535f5-4bc5-1c05d@webprd-a27.mail.aol.com> References: <15d1c1535f5-4bc5-1c05d@webprd-a27.mail.aol.com> From: Riccardo Zoli Date: Fri, 7 Jul 2017 12:44:53 +0200 Message-ID: To: LF Group X-Scan-Signature: 92b6515a4252c45136e975e6745a1e0d Subject: Re: LF: Simple coherent frequency generator Content-Type: multipart/alternative; boundary="001a114dcaae6addc30553b7ecd7" X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.75 Status: RO X-Status: X-Keywords: X-UID: 12191 --001a114dcaae6addc30553b7ecd7 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Markus, LF Sorry but I have got some problems with the reflector (no forwarding with attachements). Link to schematics: https://www.dropbox.com/sh/65l7vehoy96yon8/AABYdfyf5HkpdMVbDEI-TXbYa?dl=3D0 Yes, Markus. In David's PA the modulator (two XOR ports, SCH2) it's inserted between D Flip Flop and MOS drive. The phase changes are audible on output transformer during TX (like tic-tic-tic...), but it works very well. We haven't tested NEO-6 modules, but i think NEO-M8N/Q is the better choice (in particular for the TCXO on board and improved GPS RX sensitivity). All the best 73 de Riccardo IW4DXW Il 07/Lug/2017 10:09, "Markus Vester" ha scritto: > Thank you very much Ric for this most interesting hint. > > Unfortunately I couldn't find the two jpg images, they might have been in > an attachment that didn't make it through the reflector. Would it be > possible to upload them to a website and share the links? > > One note regarding excitation at double frequency: Make sure that the XOR > modulation is applied after the final divider, because otherwise the phas= e > difference would be halved (+-90 instead of +-180 degrees) and also > ambiguous. > > Best 73, > Markus (DF6NM) > > -----Urspr=C3=BCngliche Mitteilung----- > Von: Riccardo Zoli > An: LF Group > Verschickt: Fr, 7. Jul 2017 9:50 > Betreff: LF: Simple coherent frequency generator > > Hi Markus, Domenico, Stefan, LF > > many thanks for last EbNaut decodes, dr Markus. And thanks Domenico > for your outstanding EbNaut automatic decoder! > In these days we have got good results using stand-alone NEO-M8N (or > NEO-7M as well) modules like reference frequency generator: (no more > external TCXO, OCXO, PLL, > etc....hi); obviously, the module with his patch antenna should be > installed in a good position. The output signal isn't affected by a > significant jitter (up to 1 MHz) and remains very stable in phase. > > > -A VERY SIMPLE COHERENT FREQUENCY GENERATOR (SCH1.JPG)- > > We need only a buffer on TP5 (pin3 of the U-blox hybrid, connected > normally to the status LED) to adapt levels and impedance toward > amplifier. > SCH1.JPG is a simple solution tested by Tony IK1HGI, with GPS and > buffer installed outside the house. The square wave signal is applied > to PA using about 10 meters of RG174. > The solution with RS-232(TTL 3.3V)->WiFi converter is a practical > option (it works fine in my shack): you could use a normal COM (TTL > 3.3V) to USB adapter. > Use "U-center" (by U-blox - > https://www.u-blox.com/en/product/u-center-windows) to pre-configure > the module. > After connecting it, it's necessary to set the navigation mode and > minimum elevation of sats (thanks to Domenico for the advice). > > Go to... > - Menu - View > - Configuration view > > - Select item "NAV5 (Navigation 5)" (left side) > - Set Dynamic Model to "Stationary" (right side) > - Set Min SV Elevation to 10 degrees > - Press Send button > > - Select item "TP5 (Timepulse 5)" (left side). > - Select Frequency and Duty Cycle mode (right side) > - Set Duty cycle values (50% normally) > - Set QRG values Frequency and Frequency Locked; normal or x2 with > G0MRF PA (http://www.g0mrf.com/630m.htm) or x4 with a generic SDR > quadrature generator like > 74HC74 (normally used with H-mode mixers) > - Press Send button > > ...obviously we need GPS module status ALWAYS in locked mode to obtain > a valid coherent signal... > > - Select item "CFG (Configuration)" (left side) > - Select "Save current configuration" (right side) > - Select all Devices (in particular I2C-EEPROM) by keeping pressing Shift > key > - Press Send button > > Now the module is programmed. > > > -BPSK MODULATOR (SCH2.JPG)- > > Now we need a BPSK modulator to send EbNaut messages: the simplest > method uses XOR (or XNOR) logic ports. > This is a very cheap, but fine solution to be EbNaut QRV in TX. > In particular, this modulator can be used succesfully on G0MRF class D > PA (http://www.g0mrf.com/630m.htm) and tested by Tony IK1HGI, but also > in any other amplifier. > In this last case, it needs a proper signal buffer. > > > All the best > > > 73 de Riccardo IW4DXW > > --001a114dcaae6addc30553b7ecd7 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi Markus, LF
Sorry but I have got some problems with the refle= ctor (no forwarding with attachements).

Link to schematics:

https://www.dropbox.com/sh/65l7vehoy96yon8/AABYdfyf5HkpdMVbDEI-TXbYa= ?dl=3D0

Yes, Markus. In Da= vid's PA the modulator (two XOR ports, SCH2) it's inserted between = D Flip Flop and MOS drive. The phase changes are audible on output transfor= mer during TX (like tic-tic-tic...), but it works very well.

We haven't tested NEO-6 modules, = but i think NEO-M8N/Q is the better choice (in particular for the TCXO on b= oard and improved GPS RX sensitivity).

All the best


73 de Riccardo IW4DXW


Il 07/Lug/2017 10:09, "Markus Vester"= ; <markusvester@aol.com> = ha scritto:
Thank you very much Ric for this most interesting hint.

Unfortun= ately I couldn't find the two jpg images, they might have been in an at= tachment that=C2=A0didn't make it through the reflector. Would it be po= ssible to upload them to a website and share the links?

One note=C2= =A0regarding excitation at double frequency: Make sure that the XOR modulat= ion is applied after the final divider, because otherwise the phase differe= nce would be halved (+-90 instead of +-180 degrees)=C2=A0and also ambiguous= .

Best 73,
Markus (DF6NM)

-----Urspr=C3=BCngliche Mitteilu= ng-----
Von: Riccardo Zoli <riccardozoli80@gmail.com>
An: LF Group <= rsgb_lf_g= roup@blacksheep.org>
Verschickt: Fr, 7. Jul 2017 9:50
Betreff:= LF: Simple coherent frequency generator

Hi Markus, Domenico, = Stefan, LF

many thanks for last EbNaut decodes, dr Markus. And thank= s Domenico
for your outstanding EbNaut automatic decoder!
In these da= ys we have got good results using stand-alone NEO-M8N (or
NEO-7M as well= ) modules like reference frequency generator: (no more
external TCXO, OC= XO, PLL,
etc....hi); obviously, the module with his patch antenna should= be
installed in a good position. The output signal isn't affected b= y a
significant jitter (up to 1 MHz) and remains very stable in phase.

-A VERY SIMPLE COHERENT FREQUENCY GENERATOR (SCH1.JPG)-

We= need only a buffer on TP5 (pin3 of the U-blox hybrid, connected
normall= y to the status LED) to adapt levels and impedance toward
amplifier.
= SCH1.JPG is a simple solution tested by Tony IK1HGI, with GPS and
buffer= installed outside the house. The square wave signal is applied
to PA us= ing about 10 meters of RG174.
The solution with RS-232(TTL 3.3V)->WiF= i converter is a practical
option (it works fine in my shack): you could= use a normal COM (TTL
3.3V) to USB adapter.
Use "U-center"= (by U-blox -
https://www.u-blox.com/en/product/u-center-wind= ows) to pre-configure
the module.
After connecting it, it's n= ecessary to set the navigation mode and
minimum elevation of sats (thank= s to Domenico for the advice).

Go to...
- Menu - View
- Config= uration view

- Select item "NAV5 (Navigation 5)" (left sid= e)
- Set Dynamic Model to "Stationary" (right side)
- Set M= in SV Elevation to 10 degrees
- Press Send button

- Select item &= quot;TP5 (Timepulse 5)" (left side).
- Select Frequency and Duty Cy= cle mode (right side)
- Set Duty cycle values (50% normally)
- Set QR= G values Frequency and Frequency Locked; normal or x2 with
G0MRF PA (http://www.g0mrf.c= om/630m.htm) or x4 with a generic SDR
quadrature generator like=
74HC74 (normally used with H-mode mixers)
- Press Send button
...obviously we need GPS module status ALWAYS in locked mode to obtain
= a valid coherent signal...

- Select item "CFG (Configuration)&q= uot; (left side)
- Select "Save current configuration" (right = side)
- Select all Devices (in particular I2C-EEPROM) by keeping pressin= g Shift key
- Press Send button

Now the module is programmed.
=

-BPSK MODULATOR (SCH2.JPG)-

Now we need a BPSK modulator to = send EbNaut messages: the simplest
method uses XOR (or XNOR) logic ports= .
This is a very cheap, but fine solution to be EbNaut QRV in TX.
In = particular, this modulator can be used succesfully on G0MRF class D
PA (= http://www.g0mr= f.com/630m.htm) and tested by Tony IK1HGI, but also
in any othe= r amplifier.
In this last case, it needs a proper signal buffer.

=
All the best


73 de Riccardo IW4DXW

--001a114dcaae6addc30553b7ecd7--