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The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: I think so Bob , you would have a parallel tuned cct , with high Z , a open cct between the rod and the top load ? I use a series coil , part of the inv L at the top of the vertical section G, [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.59 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_REMOTE_IMAGE Message contains an external image X-Scan-Signature: 91e1efbff209cbddb14bc9e018c2cfe8 Subject: Re: LF: Testing WSPR2 to night a short antenna for future mobile use on MF band. Content-Type: multipart/alternative; boundary="----=_NextPart_000_0028_01CF85B9.3818B120" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.3 required=5.0 tests=CELL_PHONE_BOOST,HTML_40_50, HTML_MESSAGE,HTML_TAG_EXISTS_TBODY,MISSING_OUTLOOK_NAME 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 This is a multi-part message in MIME format. ------=_NextPart_000_0028_01CF85B9.3818B120 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable I think so Bob , you would have a parallel tuned cct , with high Z = , a open cct between the rod and the top load ? I use a series coil , part of the inv L at the top of the vertical = section =20 G,=20 From: Bob Raide=20 Sent: Wednesday, June 11, 2014 8:30 PM To: rsgb_lf_group@blacksheep.org=20 Subject: RE: LF: Testing WSPR2 to night a short antenna for future = mobile use on MF band. Warren; I never gave a thought to self resonating a coil arrangement. It could = resonate but put out no power to the ant if self resonant? =20 -------------------------------------------------------------------------= ------- Date: Wed, 11 Jun 2014 14:48:26 -0400 From: wd2xgj@gmail.com To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Testing WSPR2 to night a short antenna for future = mobile use on MF band. Andy,=20 You need such a large inductance for this, be careful how you wind = the coil since self=96resonance might be near the operating frequency! 73 Warren K2ORS On Tuesday, June 10, 2014, Andr=E9 Guy=E9 = wrote: Hi to all. I am thinking now about the design of a short vertical antenna, for MF = mobile use in next winter season. To night I=92ll test this first configuration : a 2 meters high tube = (2 cm of diameter) and a top hat (wheel shape) 80 cm of diameter. It = needs about 2.4 mH base coil tuning. The TX is 3 Watts output. Base = voltage is 2,2 kV RMS. I=92ll test this small antenna to night, beginning at 2000 TU on WSPR2 = MF band. The expected ERP is about 1 mW. All reports be welcome. Note that to night the testing antenna has his = base on the garden with a ground earth rod, so it is not installing on = my car. 73 de Andy. F6CNI - JN19QB -------------------------------------------------------------------------= ----- Ce courrier =E9lectronique ne contient aucun virus ou logiciel = malveillant parce que la protection Antivirus avast! est active.=20 =20 --=20 73 Warren K2ORS WD2XGJ=20 WD2XSH/23 WE2XEB/2 WE2XGR/1 =20 ------=_NextPart_000_0028_01CF85B9.3818B120 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable
I think so  Bob , you  would have = a =20 parallel tuned cct  , with  high Z , a open cct  = between =20 the  rod and the  top load ?
 
I use a  series coil  , part of = the  inv L=20 at the  top of  the  vertical section 
 
G,

From: Bob Raide
Sent: Wednesday, June 11, 2014 8:30 PM
Subject: RE: LF: Testing WSPR2 to night a short antenna for = future=20 mobile use on MF band.

Warren;
I never gave a thought to self resonating a = coil=20 arrangement.  It could resonate but put out no power to the = ant if=20 self resonant?
 
Date: Wed, 11 Jun 2014 14:48:26 -0400
From: wd2xgj@gmail.com
To: rsgb_lf_group@blacksheep.org=
Subject:=20 Re: LF: Testing WSPR2 to night a short antenna for future mobile use on = MF=20 band.

Andy,=20
   You need such a large inductance for this, be careful = how you=20 wind the coil since self=96resonance might be near the operating = frequency!
73 Warren K2ORS


On Tuesday, June 10, 2014, Andr=E9 Guy=E9 <andre.guye1@aliceadsl.fr>= =20 wrote:

Hi to all.

 

I am thinking now about = the design of=20 a short vertical antenna, for MF mobile use in next winter=20 season.

 

To night I=92ll test this = first=20 configuration : a 2 meters high tube (2 cm of diameter) and a top hat = (wheel=20 shape) 80 cm of diameter. It needs about 2.4 mH base coil tuning. The=20 TX is 3 Watts output. Base voltage is 2,2 kV=20 RMS.

 

I=92ll test this small = antenna to=20 night, beginning at 2000 TU on WSPR2 MF = band. The=20 expected ERP is about 1 mW.

 

All reports be welcome. = Note that to=20 night the testing antenna has his base on the garden with a ground = earth rod,=20 so it is not installing on my car.

 

73 de Andy. F6CNI -=20 JN19QB



=
Ce=20 courrier =E9lectronique ne contient aucun virus ou logiciel = malveillant=20 parce que la protection Antivirus avast! est active.=20




-- =
73=20 Warren K2ORS
                = WD2XGJ=20
                = WD2XSH/23
 =20               WE2XEB/2
  =  =20            =20 WE2XGR/1

 
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