Hi Stefan,
Well, the first 10m of the endfed wire is gently sloping upwards to a height of
about 4m above ground and the remaining 10m of length is fully vertical. That
would be fine for a first try, just to get the touch and feel for the setup.
The TRX should be good to go for WSPR. I am using a second TRX of the same
kind, but with General Coverage RX and TX (1.6 to 30 MHz) and a 400W PA and a
0.35ppm Master-Oscillator, regularly for WSPR and JT9 without problems. The
radio is reasonably modern, all solid-state.
The TRP8000 system is modular, consisting of a Transceiver Unit (ca. 15kg), a
Control Unit, and the Antenna Tuning Unit. The Units are connected to each
other by Control cables that can be up to 50m long, a Remote Controlled setup
is also possible. The Transceiver Unit has two separate output connectors, one
for HF 1.6-30 MHz and the other for MF. In a typical Marine setup a Whip
antenna of 7 to 30m of length is used for HF, and a wire of ~30m of length for
MF. The HF and MF ATUs are typically installed at the feedpoint of the antenna,
the HF ATU is in a weatherproof Polycarbonate enclosure, the MF ATU is much
larger and needs a weatherproof housing.
I will first try to replicate the original setup as found in Marine
installations and go on from there.
BTW, I do as well own more modern radios, an Elecraft K2 built by myself and a
Flex1500, but the old Skanti Radios are exactly what I need when ragchewing in
CW :-)
73 de Greg DF2IC
--
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von DK7FC
Gesendet: Montag, 3. Dezember 2018 15:40
An: [email protected]
Betreff: Re: LF: AW: WSPR-15 weekend
Hello Greg,
RR, then welcome to the group!
Your 20 m wire could produce WSPR decodes in a 1000 km range, if the wire it
not completely sourrounded by trees and if it has some distance above GND. For
CW you may need high power or a better antenna. But the question is if your TRX
provides the frequency stability needed for WSPR.
Is the automatic tuner separated from the TRX or do you have to feed the wire
into the shack? In principal you only need a coil and a ferrite transformer to
match the antenna to 50 Ohm at MF. The material is available from the net or
local markets such as BAUHAUS ;-) Don't hesitate to ask if you need more
concrete help/advice.
73, Stefan
Am 02.12.2018 21:34, schrieb Greg Fismer:
> Hi Stefan,
> Yes, I‘m new to the LF group. I started listening to MF/LF last winter
> and joined the group a couple of weeks ago. At the moment I use the
> Mini-Whip for listening, it is installed high up directly under a
> roof without isolation. The RX/TX is a Marine radio mfg. ca. 1995 by
> Skanti from Denmark, Model TRP825xMF, 250W Max. Output on MF with an
> automatic ATU. But I haven‘t yet managed to get up a half decent TX
> antenna for MF. For HF I use a 2-Element Yagi and a 20m long Endfed
> wire. I own a few of these old Skanti radios and use them regularly on
> the HF bands, mainly for CW, but only one radio has the MF PA-Filters
> installed. The town here is called Rimbach, Loc. JN49jo, and I live
> right in the Center of it, so it‘s not the worlds quietest QTH, but
> not that bad either. Space for long antennas is limited, the house
> itself is big but the estate is small. I‘m open to experimenting, but
> I must confess that I‘m not the worlds most technical guy, having
> studied Life Sciences (Pharmacy) in Heidelberg and making my living by
> selling legal drugs (=Pharmacist)
>
> 73 de Greg DF2IC
>
>
> G. Fismer, Staatsstr.35, D-64668 Rimbach
> Tel.: +49 (0)152 5636 1318
>
>
>> Am 02.12.2018 um 09:45 schrieb DK7FC<[email protected]>:
>>
>> Hello Greg,
>>
>> thanks for the reports from 20 km distance :-) It is the first time
>> that i see you on the map and that i read from you here. Are you a
>> new memeber? :-)
>>
>> 20 km is an interesting distance for local tests on lower frequencies :-) Do
>> you live in a quiet location or is there a lot of QRM arround?
>>
>> 73, Stefan
>>
>>
>> Am 01.12.2018 08:10, schrieb Greg Fismer:
>>
>>> Moin Stefan& Group,
>>>
>>> WSPR-15 signals very well received over a distance of ~20km :-) No other
>>> signals though.
>>>
>>> 73 de Greg DF2IC
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: [email protected]
>>> [mailto:[email protected]] Im Auftrag von DK7FC
>>> Gesendet: Freitag, 30. November 2018 14:43
>>> An: [email protected]
>>> Betreff: LF: WSPR-15 weekend
>>>
>>> Hi LF, I'm going to spend the night at WSPR-15 on 137.620 kHz again.
>>> If someone is interested to join or to try to decode, don't hestiate
>>> ;-)
>>>
>>> 73, Stefan
>>>
>>>
>>>
>>>
>
>
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