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Re: LF: Re: VLF - G3XIZ - 14th May 2011

from [Ken] [Permanent Link][Original]
To: <[email protected]>
Subject: Re: LF: Re: VLF - G3XIZ - 14th May 2011
From: "Ken" <[email protected]>
Date: Sun, 15 May 2011 10:07:54 +0100
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Hello Stefan.
Thank you for your reply, I am using the 'mic' input on the onboard sound card on my Dell desktop pc, and SpecLab V2.76b8, with an additional usr file from Eddie G3ZJO, this model of pc does not have support additional card slots so anything needs to be external. I thought the E-Probe had that type of characteristic, in your opinion what would be the minimum height for the E-Probe?, at present I can only make 5m.
 
73s.
 
Ken.
 
M0KHW
----- Original Message -----
Sent: Saturday, May 14, 2011 8:44 PM
Subject: Re: LF: Re: VLF - G3XIZ - 14th May 2011

Hello Ken,

Well, it is difficult to comment this if i have no impression of the wideband view between the different antennas. The filter is a 3 stage LPF, cut off at about 13 kHz. Generally the probe works well so it may be a problem of grounding or something elso is wrong. What is your RX, i simple soundcard?
Could be interesting to compare different wideband screens!

73, Stefan/DK7FC

Am 14.05.2011 14:35, schrieb Ken:
LF.
I saw a very faint trace about 10.00UTC using my 'T' antenna at a height of 8M, but nothing on the E-Probe at 5M on a non-metalic pole, the distance between Chris and myself is about 15-18km, I would be grateful for your comments Stefan. Also what are the charicteristics of the filter between the two FETs?
 
73s
 
Ken
 
M0KHW 
----- Original Message -----
Sent: Friday, May 13, 2011 7:57 PM
Subject: LF: VLF - G3XIZ - 14th May 2011

LF,
 
I shall be transmitting on VLF tomorrow: 14th May:
 
 
Time:     From 04.00 Z for several hours.
QRG:     8.976 661 6 kHz
Loc:       IO 92 UB
Power:   120 watts RF
Aer:       40m inverted L, height 10m
Mode:    Constant carrier
 
This should be my last transmission on the existing aerial system as I shall be soon making improvements.
Consequently reports will be especially welcomed.
 
73 Chris G3XIZ
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