Return-Path: X-Spam-DCC: paranoid 1102; Body=1 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t9NCwVYs012133 for ; Fri, 23 Oct 2015 14:58:31 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Zpbrs-0007Xq-7q for rs_out_1@blacksheep.org; Fri, 23 Oct 2015 13:54:48 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Zpbrr-0007Xh-Lw for rsgb_lf_group@blacksheep.org; Fri, 23 Oct 2015 13:54:47 +0100 Received: from smtp03.smtpout.orange.fr ([80.12.242.125] helo=smtp.smtpout.orange.fr) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1Zpbqs-0000ZL-JN for rsgb_lf_group@blacksheep.org; Fri, 23 Oct 2015 13:54:46 +0100 Received: from pcn5 ([109.219.243.149]) by mwinf5d57 with ME id YctY1r00A3E79cl03ctZet; Fri, 23 Oct 2015 14:53:33 +0200 X-ME-Helo: pcn5 X-ME-Date: Fri, 23 Oct 2015 14:53:33 +0200 X-ME-IP: 109.219.243.149 Message-ID: <360BD4613E1A4110ABB92063DA37C523@pcn5> From: "F6CNI - Andy - JN19QB" To: References: <579355A36AEE9D4FA555C45D556003AB1B25A181@servigilant.vigilant.local> <5628B2D0.7060002@posteo.de> <5629507B.6010907@posteo.de> In-Reply-To: <5629507B.6010907@posteo.de> Date: Fri, 23 Oct 2015 14:53:29 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3528.331 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3528.331 X-Antivirus: avast! (VPS 151023-0, 23/10/2015), Outbound message X-Antivirus-Status: Not-Tested X-Scan-Signature: 32f0c002d258ce351b2c37fe18ccfa3a Subject: LF: To DK7FC : measuring low levels RF current. Content-Type: multipart/alternative; boundary="----=_NextPart_000_000E_01D10DA2.947406F0" 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 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4579 Ce message est composi et au format MIME. ------=_NextPart_000_000E_01D10DA2.947406F0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Helo Stefan, For info, here I am using a MFJ 834 RF Ammeter. It is working well on MF = band, it just need to be first re-calibrate on MF band (only one = variable resistance to adjust) using a low power signal into a 50 Ohms = pure resistive load. It is quite linear for RF current measurement from 25 mA to 3 Amperes, = in 3 swiched scales.=20 Using it on the 50 Ohms coaxial cable, just after your TX output, you = have a good estimation of your TX power output from 30 milli watt to 450 = watts. You can also use it on the cold end of the antenna side. Depending at = the overall antenna system resistance, you can read the real antenna = current=E2=80=A6 73 de Andy. From: DK7FC=20 Sent: Thursday, October 22, 2015 11:09 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: M0LMH Hi MF, Since a few hours i'm transmitting WSPR with the variable mains = transformer turned to 0%. So just the driver is switching the FETs. = Anyway a few mW TX power seem to be generated and radiated. I can see no = reading on the RF amperemeter. Anyway i got 15 spots: Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az=20 2015-10-22 20:14 DK7FC 0.475685 -22 0 JN49ik 1 M0LMH = IO93gx 862 310 =20 2015-10-22 20:24 DK7FC 0.475683 -19 0 JN49ik 1 F5WK JN18hp = 452 261 =20 2015-10-22 20:44 DK7FC 0.475682 -21 0 JN49ik 1 PA0A JO33de = 449 339 =20 2015-10-22 20:14 DK7FC 0.475682 -26 0 JN49ik 1 PA0RDT = JO11tm 428 305 =20 2015-10-22 20:14 DK7FC 0.475683 -17 0 JN49ik 1 PA3ABK = JO21it 386 315 =20 2015-10-22 20:14 DK7FC 0.475683 -15 0 JN49ik 1 DH5RAE = JN68qv 345 98 =20 2015-10-22 20:14 DK7FC 0.475683 -18 0 JN49ik 1 PI4THT = JO32kf 336 338 =20 2015-10-22 20:14 DK7FC 0.475683 -15 0 JN49ik 1 DJ0ABR = JN68nt 329 101 =20 2015-10-22 20:14 DK7FC 0.475683 -22 0 JN49ik 1 DG8RW = JN69cv 257 77 =20 2015-10-22 20:14 DK7FC 0.475682 -23 0 JN49ik 1 DF2JP = JO31hh 256 325 =20 2015-10-22 20:54 DK7FC 0.475683 -27 1 JN49ik 1 DC0DX_H = JO31lk 255 332 =20 2015-10-22 20:24 DK7FC 0.475684 -24 0 JN49ik 1 DB1EPO = JO31hg 252 325 =20 2015-10-22 20:14 DK7FC 0.475684 -21 0 JN49ik 1 DF6NM = JN59nj 175 91 =20 2015-10-22 20:14 DK7FC 0.475684 -7 0 JN49ik 1 DK2DB JN48fw = 58 198 =20 2015-10-22 20:34 DK7FC 0.475686 -10 0 JN49ik 1 DF8UO = JN48ex 56 206 =20 M0LMH is the best distance. Also in daytime i can see that M0LMH is = receiving me, often beeing the only one from UK. Does someone know him and his equipment? Would be interesting to know! = In IO93GX, there is not population. Certainly one reason for the good = results... 73, Stefan PS: Now QRO... ------=_NextPart_000_000E_01D10DA2.947406F0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Helo Stefan,

 

For info, here I am using a MFJ 834 RF Ammeter. It is = working well=20 on MF band, it just need to be first re-calibrate on MF band (only one = variable=20 resistance to adjust) using a low power signal into a 50 Ohms pure = resistive=20 load.

 

It=20 is quite linear for RF current measurement from 25 mA to 3 Amperes, in 3 = swiched=20 scales.

 

Using it on the 50 Ohms coaxial cable, just after your TX = output, you=20 have a good estimation of your TX power output from 30 milli watt to 450 = watts.

 

You can also use it on the cold end of the antenna side. = Depending at=20 the overall antenna system resistance, you can read the real antenna=20 current=E2=80=A6

 

73=20 de Andy.

 
From: DK7FC
Sent: Thursday, October 22, 2015 11:09 PM
Subject: LF: M0LMH
 
Hi=20 MF,

Since a few hours i'm transmitting WSPR with the variable = mains=20 transformer turned to 0%. So just the driver is switching the FETs. = Anyway a few=20 mW TX power seem to be generated and radiated. I can see no reading on = the RF=20 amperemeter.
Anyway i got 15 spots:
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
2015-10-22 20:14 DK7FC 0.475685 -22 0 JN49ik 1 M0LMH IO93gx 862 310
2015-10-22 20:24 DK7FC 0.475683 -19 0 JN49ik 1 F5WK JN18hp 452 261
2015-10-22 20:44 DK7FC 0.475682 -21 0 JN49ik 1 PA0A JO33de 449 339
2015-10-22 20:14 DK7FC 0.475682 -26 0 JN49ik 1 PA0RDT JO11tm 428 305
2015-10-22 20:14 DK7FC 0.475683 -17 0 JN49ik 1 PA3ABK JO21it 386 315
2015-10-22 20:14 DK7FC 0.475683 -15 0 JN49ik 1 DH5RAE JN68qv 345 98
2015-10-22 20:14 DK7FC 0.475683 -18 0 JN49ik 1 PI4THT JO32kf 336 338
2015-10-22 20:14 DK7FC 0.475683 -15 0 JN49ik 1 DJ0ABR JN68nt 329 101
2015-10-22 20:14 DK7FC 0.475683 -22 0 JN49ik 1 DG8RW JN69cv 257 77
2015-10-22 20:14 DK7FC 0.475682 -23 0 JN49ik 1 DF2JP JO31hh 256 325
2015-10-22 20:54 DK7FC 0.475683 -27 1 JN49ik 1 DC0DX_H JO31lk 255 332
2015-10-22 20:24 DK7FC 0.475684 -24 0 JN49ik 1 DB1EPO JO31hg 252 325
2015-10-22 20:14 DK7FC 0.475684 -21 0 JN49ik 1 DF6NM JN59nj 175 91
2015-10-22 20:14 DK7FC 0.475684 -7 0 JN49ik 1 DK2DB JN48fw 58 198
2015-10-22 20:34 DK7FC 0.475686 -10 0 JN49ik 1 DF8UO JN48ex 56 206

M0LMH is the = best distance.=20 Also in daytime i can see that M0LMH is receiving me, often beeing the = only one=20 from UK.
Does someone know him and his equipment? Would be = interesting to=20 know! In IO93GX, there is not population. Certainly one reason for the = good=20 results...

73, Stefan

PS: Now=20 QRO...
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