Hi Lubos,
thanks for the description of your improved TX and RX antenna.
My antenna is a fullsize halfwave dipole at 8m height at the feeding point,
ends go up to 10m /15m height.
It is fed by 42m balanced open feeder line and matched to 50 Ohms by series
silver mica Cs (system resonance is below 470kHz) with about 1.5nF in each leg.
For local noise reduction an effective current balun was essential.
See attached pictures and provided link below.
Ant.2x155m Dipol;
RX Perseus
http://k7fry.com/grid/?qth=JN68KJ79WJ
73
Clemens
DL4RAJ
>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]] On Behalf Of lubos
>Sent: Sunday, January 20, 2019 2:54 PM
>To: [email protected]
>Subject: LF: DL4RAJ_OK2BVG_WSPR
>
>Hallo Clemets!
>Thanks for your report, I am pleased! :-)
>Well, my antenna is still "Marconi T" 40m high, but I
>decreased ground losses and the professional loading coil is
>in using now (It is made from thick litz wire)
>
>I am sure, your receiving equipment for 630m band is GREAT.
>It is usefull to compare your and my results. For example WSPR
>spots more than 1300km, last night:
>
> 2019-01-20 01:40 AA1A 0.475675 -29 0
> FN42pb 5 OK2BVG JN88ks 6490 51 21
> 2019-01-20 06:30 W1IR 0.475761 -29 0
> FN34lp 5 OK2BVG JN88ks 6455 51 1
> 2019-01-19 19:02 EI0CF 0.475689 -17 0
> IO65ih 0.2 OK2BVG JN88ks 1794 104 8
> 2019-01-20 04:30 G3WCB 0.475606 -29 0
> IO80ei 0.001 OK2BVG JN88ks 1484 89 4
> 2019-01-19 19:40 G8HUH 0.475672 -13 0
> IO81mg 1 OK2BVG JN88ks 1439 93 9
> 2019-01-19 19:42 G4MSN 0.475671 -23 0
> IO93fu 0.2 OK2BVG JN88ks 1394 106 12
> 2019-01-19 18:42 G0MRF 0.475785 -3 0
> IO91fr 5 OK2BVG JN88ks 1346 97 82
> 2019-01-19 08:12 G3KEV 0.475666 -16 0
> IO94sh 5 OK2BVG JN88ks 1343 110 2
> 2019-01-19 23:00 F5MAF 0.475702 -26 0
> JN03pq 0.01 OK2BVG JN88ks 1322 59 3
>
>
>
> 2019-01-20 02:36 K5DNL 0.475791 -27 0
> EM15lj 5 DL4RAJ JN68kj 8406 40 7
> 2019-01-20 02:58 W4BCX 0.475722 -31 0
> EL98pd 50 DL4RAJ JN68kj 7958 44 1
> 2019-01-20 05:26 AA1A 0.475673 -25 0
> FN42pb 5 DL4RAJ JN68kj 6251 53 55
> 2019-01-20 05:26 W1IR 0.475759 -24 0
> FN34lp 5 DL4RAJ JN68kj 6228 53 9
> 2019-01-19 10:14 EI0CF 0.475687 -18 0
> IO65ih 0.2 DL4RAJ JN68kj 1576 111 16
> 2019-01-19 07:58 GM3YXM 0.475751 -18 0
> IO75xc 0.2 DL4RAJ JN68kj 1377 116 4
>
>The JN88KS locator is about 200km further East of course :-)
>My receiving antenna is home made tuned loop + preamplifier.
>The diameter is 1,7m, it has been made from coaxial cable (3
>turns) and it is 5m up the ground only :-)
>What is your receiving antenna for WSPR, please?
>
>73!
>Lubos, OK2BVG
>*******************************************
>
>
>Dne 19.1.2019 v 20:06 Clemens Paul napsal(a):
>
>
> Hi Lubos,
>
>
> BTW - I compare your and my WSPR list from 630m
>every morning. It is
> interesting. I am testing my new receiving loop antenna.
>
>
> Aah,good to know. :-)
> I noticed your callsign several times when checking the
>database for T/A spots but was not aware
> anymore that OK2BVG is YOU.
> Your loop seems to perform quite well.
> Which improvements have you done to your TX antenna?
> Is it higher than 40m now or did you modify the top load?
> Signal is S9+3dB just now.
>
> 73
> Clemens
> DL4RAJ
>
>
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On
>Behalf Of lubos
> Sent: Saturday, January 19, 2019 6:33 PM
> To: [email protected]
> Subject: Re: LF: RE: OK0EMW_again
>
> Hallo Clemens!
> Thanks for nice report!
> BTW - I compare your and my WSPR list from 630m
>every morning. It is
> interesting. I am testing my new receiving loop antenna.
>
> 73!
> Lubos, OK2BVG
> ***************************************
>
>
>
>
>
>
>
>________________________________
>
>AVG-Logo <http://www.avg.com/internet-security> Diese
>E-Mail wurde von AVG-Virenschutzsoftware auf Viren geprüft.
>www.avg.com <http://www.avg.com/internet-security>
>
>
>
>
matched mw dipole.gif
Description: GIF image
Dipol 2x156m.JPG
Description: JPEG image
|
