Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 1A82138000195; Tue, 9 Aug 2011 14:18:15 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qqqrp-0007JU-12 for rs_out_1@blacksheep.org; Tue, 09 Aug 2011 19:17:29 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qqqro-0007JJ-DE for rsgb_lf_group@blacksheep.org; Tue, 09 Aug 2011 19:17:28 +0100 Received: from out1.ip05ir2.opaltelecom.net ([62.24.128.241]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qqqrm-0004gM-9k for rsgb_lf_group@blacksheep.org; Tue, 09 Aug 2011 19:17:28 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AuAAAMx4QU5cHYvO/2dsb2JhbABCl2CPXXiBOwUBAQUIAQEDSQIPHQEBAwUCAQMRBAEBCiUUAQQaBhYIBhMKAQICAQGHXgK+J4ZGBIJQhF2cRA X-IronPort-AV: E=Sophos;i="4.67,344,1309734000"; d="scan'208,217";a="351018594" Received: from host-92-29-139-206.as13285.net (HELO xphd97xgq27nyf) ([92.29.139.206]) by out1.ip05ir2.opaltelecom.net with SMTP; 09 Aug 2011 19:17:19 +0100 Message-ID: <006601cc56c0$8f54a320$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: 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> Date: Tue, 9 Aug 2011 19:17:12 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: 137 ck Content-Type: multipart/alternative; boundary="----=_NextPart_000_0063_01CC56C8.F0E94890" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,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: 0:2:489694976:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d41194e4179e719bb X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0063_01CC56C8.F0E94890 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Stefan No 100 hz visible on the NL 9222 GRABBER.=20 mal/g3kev ----- Original Message -----=20 From: Stefan Sch=E4fer=20 To: rsgb_lf_group@blacksheep.org=20 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:=20 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 -----=20 From: Graham=20 To: rsgb_lf_group@blacksheep.org=20 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=20 Depending on the loop bandwidth of the stabiliser , keying = may also induce transits , use the peak hold to observe the = generated spectrum=20 G.. From: mal hamilton=20 Sent: Monday, August 08, 2011 8:29 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: 137 ck No hum Gary I am monitoring on the scope and sig is vy clean mal/g3kev ----- Original Message -----=20 From: Gary - G4WGT=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Monday, August 08, 2011 8:19 PM Subject: Re: LF: 137 ck OK Mal,=20 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 = 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 -----=20 From: Gary - G4WGT=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Monday, August 08, 2011 7:21 PM Subject: Re: LF: 137 ck Mal,=20 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=20 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 ------=_NextPart_000_0063_01CC56C8.F0E94890 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Stefan
No 100 hz visible on the NL 9222 GRABBER. =
mal/g3kev
 
----- Original Message -----
From:=20 Stefan = Sch=E4fer
Sent: Tuesday, August 09, 2011 = 7:08=20 PM
Subject: Re: LF: 137 ck

Mal, Gary,

Right now i can see the 100 Hz = sidebands on=20 Gary's grabber! O copy ;-)

Am 09.08.2011 17:57, schrieb mal = hamilton:=20
Graham
The display looks clean this end also the = audio sounds=20 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=20 instructions with this TX.

What = instructions?=20 What L? A L at 50 Hz? A L has a R and just causes losses. What you = need is C!=20 Just add some 10000 uF to the PSU.

73, Stefan



With a strong signal on some Grabbers = there will=20 be the dog bone effect with leading/trailing edge blips from keying = carrier=20 on/off
but on scope no transients=20 visible.
73 de mal/g3kev
 
-----=20 Original Message ----- From:=20 Graham To:=20 rsgb_lf_group@blacksheep.org Sent:=20 Monday, August 08, 2011 11:49 PM Subject:=20 Re: LF: 137 ck

That's  the problem  = with =20 modern   digital  technology , the  dynamic=20 range  exceeds , that  of the  MK-1   = eye =20 ball , 30 db is  1000:1  , will  show at  20 = db over=20 the  noise and  would  not  show on the =20 scope
 
Use a  = reasonable  =20 decoupling   capacitor  , and look at the =20 psu   voltage  using  a  (cheap) = sound =20 card  (with high z resistive ladder for =20 safety) ..use  Wolf's   SPEC-LAB  =20 to   view  the dB  attenuation  at  = 50, 100,=20 150 , 200  Hz  etc
 
Depending  on the  = loop =20 bandwidth  of the  stabiliser , keying  may =20 also  induce  transits  , use the  peak  = hold=20 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
 
-----=20 Original Message ----- From:=20 Gary - G4WGT To:=20 rsgb_lf_group@blacksheep.org Sent:=20 Monday, August 08, 2011 8:19 PM Subject:=20 Re: LF: 137 ck

OK Mal,=20

Captures are at 10 minute intervals, but I have saved you = going to=20 SpecSavers as I have enlarged the frequency readout.

BTW...do you have some 100Hz hum on your transmission, look = at my=20 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=20 display es the times and freq hard to read
otherwise sensitivity seems ok at = present for=20 distance
73 de mal/g3kev
 
-----=20 Original Message -----
From:=20 Gary - G4WGT =
To:=20 rsgb_lf_group@blacksheep.org =
Sent:=20 Monday, August 08, 2011 7:21 PM
Subject:=20 Re: LF: 137 ck

Mal,=20

You wrote.........While=20 testing earlier find NO UK GRABBERS working

My 500kHz & 137kHz grabber runs=20 24/7....

http://myweb.tiscali.co.uk/wgtaylor/grabber2.htm= l

Gary - G4WGT.


On 8 August 2011 18:33, mal = hamilton <g3kevmal@talktalk.net>=20 wrote:
Just finished my new PSU 60V/10A = psu. While=20 testing earlier find NO UK GRABBERS working and DK7FC has = a=20 SPURIOUS wobble signal right on 137.7
I will be QRV for a while from now = on 137.7=20 qrs3 for DX qso's and will work locals on CW
73 De Mal/G3KEV
=
 




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