Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dc05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 235EE38000108; Tue, 9 Aug 2011 14:32:42 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qqr5t-0007TC-LB for rs_out_1@blacksheep.org; Tue, 09 Aug 2011 19:32:01 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qqr5t-0007T3-04 for rsgb_lf_group@blacksheep.org; Tue, 09 Aug 2011 19:32:01 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qqr5q-0004xW-UR for rsgb_lf_group@blacksheep.org; Tue, 09 Aug 2011 19:32:00 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id p79IVvKY009768 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 9 Aug 2011 20:31:57 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id p79IVviQ021575 for ; Tue, 9 Aug 2011 20:31:57 +0200 Message-ID: <4E417C60.1060602@iup.uni-heidelberg.de> Date: Tue, 09 Aug 2011 20:28:48 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <001901cc55f1$52b9f660$0401a8c0@xphd97xgq27nyf><003701cc55f8$e9e01950$0401a8c0@xphd97xgq27nyf> <006801cc5601$705d4ae0$0401a8c0@xphd97xgq27nyf> <2CCA2BE4259248B4ABDC241F0EE58FA8@AGB> <003201cc56ad$091bce90$0401a8c0@xphd97xgq27nyf> <4E4177A4.8030906@iup.uni-heidelberg.de> <006601cc56c0$8f54a320$0401a8c0@xphd97xgq27nyf> In-Reply-To: <006601cc56c0$8f54a320$0401a8c0@xphd97xgq27nyf> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: 137 ck Content-Type: multipart/alternative; boundary="------------030205050404090007040501" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.2 required=5.0 tests=HTML_50_60,HTML_MESSAGE autolearn=no version=2.63 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-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:502536928:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40854e417d4a0ea5 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------030205050404090007040501 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id p79IVvKY009768 It was visible on GARYs grabber. Now they are gone. Maybe a faulty contact on the caps? Good luck anyway. Strong rain again here, affecting the signal levels on the grabber here=20 :-/ Have to change that. This effect does not happen on VLF... 73, Stefan PS: Coming on air too, soon. Have done improvements on the PA... Am 09.08.2011 20:17, schrieb mal hamilton: > Stefan > No 100 hz visible on the NL 9222 GRABBER. > mal/g3kev > > ----- Original Message ----- > *From:* Stefan Sch=E4fer > *To:* rsgb_lf_group@blacksheep.org > > *Sent:* Tuesday, August 09, 2011 7:08 PM > *Subject:* Re: LF: 137 ck > > Mal, Gary, > > Right now i can see the 100 Hz sidebands on Gary's grabber! O copy = ;-) > > Am 09.08.2011 17:57, schrieb mal hamilton: >> Graham >> The display looks clean this end also the audio sounds pure with >> no 100 hz hum as monitored on an independent RX >> I have the proper C's es L for decouping as per Decca >> instructions with this TX. > > What instructions? What L? A L at 50 Hz? A L has a R and just > causes losses. What you need is C! Just add some 10000 uF to the PS= U. > > 73, Stefan > > > >> With a strong signal on some Grabbers there will be the dog bone >> effect with leading/trailing edge blips from keying carrier on/off >> but on scope no transients visible. >> 73 de mal/g3kev >> >> ----- Original Message ----- >> *From:* Graham >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Monday, August 08, 2011 11:49 PM >> *Subject:* Re: LF: 137 ck >> >> That's the problem with modern digital technology , >> the dynamic range exceeds , that of the MK-1 eye ball >> , 30 db is 1000:1 , will show at 20 db over the noise >> and would not show on the scope >> Use a reasonable decoupling capacitor , and look at >> the psu voltage using a (cheap) sound card (with high >> z resistive ladder for safety) ..use Wolf's SPEC-LAB =20 >> to view the dB attenuation at 50, 100, 150 , 200 Hz et= c >> Depending on the loop bandwidth of the stabiliser , >> keying may also induce transits , use the peak hold >> to observe the generated spectrum >> G.. >> >> *From:* mal hamilton >> *Sent:* Monday, August 08, 2011 8:29 PM >> *To:* rsgb_lf_group@blacksheep.org >> >> *Subject:* Re: LF: 137 ck >> >> No hum Gary >> I am monitoring on the scope and sig is vy clean >> mal/g3kev >> >> ----- Original Message ----- >> *From:* Gary - G4WGT >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Monday, August 08, 2011 8:19 PM >> *Subject:* Re: LF: 137 ck >> >> OK Mal, >> >> Captures are at 10 minute intervals, but I have saved you >> going to SpecSavers as I have enlarged the frequency reado= ut. >> >> BTW...do you have some 100Hz hum on your transmission, >> look at my grabber to check. >> >> 73 >> >> Gary - G4WGT. >> >> >> On 8 August 2011 19:28, mal hamilton >> > wro= te: >> >> Yes Gary >> Your grabber seems to have a long delay before >> display es the times and freq hard to read >> otherwise sensitivity seems ok at present for distance >> 73 de mal/g3kev >> >> ----- Original Message ----- >> *From:* Gary - G4WGT >> *To:* rsgb_lf_group@blacksheep.org >> >> *Sent:* Monday, August 08, 2011 7:21 PM >> *Subject:* Re: LF: 137 ck >> >> Mal, >> >> You wrote.........While testing earlier find NO >> UK GRABBERS working >> >> My 500kHz & 137kHz grabber runs 24/7.... >> >> http://myweb.tiscali.co.uk/wgtaylor/grabber2.html >> >> Gary - G4WGT. >> >> >> On 8 August 2011 18:33, mal hamilton >> > > wrote: >> >> Just finished my new PSU 60V/10A psu. While >> testing earlier find NO UK GRABBERS working >> and DK7FC has a SPURIOUS wobble signal right >> on 137.7 >> I will be QRV for a while from now on 137.7 >> qrs3 for DX qso's and will work locals on CW >> 73 De Mal/G3KEV >> >> >> >> >> --------------030205050404090007040501 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit It was visible on GARYs grabber.
Now they are gone. Maybe a faulty contact on the caps?
Good luck anyway.
Strong rain again here, affecting the signal levels on the grabber here :-/ Have to change that. This effect does not happen on VLF...

73, Stefan

PS: Coming on air too, soon. Have done improvements on the PA...


Am 09.08.2011 20:17, schrieb mal hamilton:
Stefan
No 100 hz visible on the NL 9222 GRABBER.
mal/g3kev
 
----- Original Message -----
Sent: Tuesday, August 09, 2011 7:08 PM
Subject: Re: LF: 137 ck

Mal, Gary,

Right now i can see the 100 Hz sidebands on Gary's grabber! O copy ;-)

Am 09.08.2011 17:57, schrieb mal hamilton:
Graham
The display looks clean this end also the audio sounds pure with no 100 hz hum as monitored on an independent RX
I have the proper C's es L for decouping as per Decca instructions with this TX.

What instructions? What L? A L at 50 Hz? A L has a R and just causes losses. What you need is C! Just add some 10000 uF to the PSU.

73, Stefan



With a strong signal on some Grabbers there will be the dog bone effect with leading/trailing edge blips from keying carrier on/off
but on scope no transients visible.
73 de mal/g3kev
 
----- Original Message -----
From: Graham
Sent: Monday, August 08, 2011 11:49 PM
Subject: Re: LF: 137 ck

That's  the problem  with  modern   digital  technology , the  dynamic range  exceeds , that  of the  MK-1   eye  ball , 30 db is  1000:1  , will  show at  20 db over the  noise and  would  not  show on the  scope
 
Use a  reasonable   decoupling   capacitor  , and look at the  psu   voltage  using  a  (cheap) sound  card  (with high z resistive ladder for  safety) ..use  Wolf's   SPEC-LAB   to   view  the dB  attenuation  at  50, 100, 150 , 200  Hz  etc
 
Depending  on the  loop  bandwidth  of the  stabiliser , keying  may  also  induce  transits  , use the  peak  hold to  observe the  generated  spectrum
 
G..

Sent: Monday, August 08, 2011 8:29 PM
Subject: Re: LF: 137 ck

No hum Gary
I am monitoring on the scope and sig is vy clean
mal/g3kev
 
----- Original Message -----
Sent: Monday, August 08, 2011 8:19 PM
Subject: Re: LF: 137 ck

OK Mal,

Captures are at 10 minute intervals, but I have saved you going to SpecSavers as I have enlarged the frequency readout.

BTW...do you have some 100Hz hum on your transmission, look at my grabber to check.

73

Gary - G4WGT.


On 8 August 2011 19:28, mal hamilton <g3kevmal@talktalk.net> wrote:
Yes Gary
Your grabber seems to have a long delay before display es the times and freq hard to read
otherwise sensitivity seems ok at present for distance
73 de mal/g3kev
 
----- Original Message -----
Sent: Monday, August 08, 2011 7:21 PM
Subject: Re: LF: 137 ck

Mal,

You wrote.........While testing earlier find NO UK GRABBERS working

My 500kHz & 137kHz grabber runs 24/7....


Gary - G4WGT.


On 8 August 2011 18:33, mal hamilton <g3kevmal@talktalk.net> wrote:
Just finished my new PSU 60V/10A psu. While testing earlier find NO UK GRABBERS working and DK7FC has a SPURIOUS wobble signal right on 137.7
I will be QRV for a while from now on 137.7 qrs3 for DX qso's and will work locals on CW
73 De Mal/G3KEV
 




--------------030205050404090007040501--