Graham,
Yes 2000km is very good for one watt but is not to be expected on a
regular basis!
I have an experimental license that lets me run 10W ERP on 160-190kHz,
my best guess is that with 250W out my ERP is less than 1/2W. Most of
the time 250W is not sufficient to cover 2000km so you can imagine
just how rare a 2000km reception is with 1 Watt !!
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On Tue, Dec 28, 2010 at 12:23 PM, Graham <[email protected]> wrote:
> 1/4 KW ?
>
> Andy is talking about 1 watt dc feed to the PA and a short Ae , I
> thought 2000 kmt was good going for 1 watt
>
> is it the same band ?
>
> G..
>
> --------------------------------------------------
> From: "Warren Ziegler" <[email protected]>
> Sent: Tuesday, December 28, 2010 5:08 PM
> To: <[email protected]>
> Subject: Re: LF: 160 to 190 KHz a real magic band ?
>
>>
>> I occasionally put a beacon on the 180 kHz band with 250 Watts out and
>> have been copied in France and the Netherlands during the time each
>> night that Europe 1 is off.
>> No magic, about the same results as 137kHz except that 137 is quieter.
>>
>>
>> --
>> 73 Warren K2ORS
>> WD2XGJ
>> WD2XSH/23
>> WE2XEB/2
>> WE2XGR/1
>>
>> On Tue, Dec 28, 2010 at 11:40 AM, Gary - G4WGT <[email protected]>
>> wrote:
>>>
>>> Graham,
>>> Have a listen after dark, I seem to remember it was quite horrendous last
>>> time I looked at that part of the spectrum. I will have another listen
>>> tonight. I think the EU chaps wait until Europe1 has stopped Txing. Here
>>> is
>>> one frequency I know of, extract from Joe's e-mail.
>>> VO1NA, 184.509.3kHz
>>> TX about 5 watts 0.4 amps to 100m wire at 15 m high.
>>> 73,
>>> Gary - G4WGT - IO83qo.
>>> LF MF Grabber - Web Site - Blogspot - 9kHz Grabber
>>>
>>>
>>>
>>> On 28 December 2010 16:22, Graham <[email protected]> wrote:
>>>>
>>>> Ok Gary,
>>>>
>>>> Seems to be some quite big gaps in that spectrum , big enough for
>>>> a cw filter and wspr signal to sit with no splash ?
>>>>
>>>> G
>>>>
>>>> Nb looks like someone has the spam filter -mal-adjusted- ?
>>>>
>>>> ----- Original Message -----
>>>> From: Gary - G4WGT
>>>> To: [email protected]
>>>> Sent: Tuesday, December 28, 2010 2:54 PM
>>>> Subject: Re: LF: 160 to 190 KHz a real magic band ?
>>>> Graham,
>>>> I have occasionally read mails on LF regarding U.S. 184kHz qrs beacons &
>>>> captures from Europe. Apparently there is a very powerful broadcast
>>>> station
>>>> in Europe on a near frequency which causes high qrm when on, I believe
>>>> it is
>>>> "Europe1"
>>>> Gary - G4WGT.
>>>>
>>>> On 28 December 2010 12:16, Graham <[email protected]> wrote:
>>>>>
>>>>> Lifted from the WSPR web site http://wsprnet.org/drupal/
>>>>>
>>>>> 1 watt and 15 mtrs of antenna ,decoding over 1148 kmtrs , (best
>>>>> round 2000k) seems to make the 137 attempts look a little 'coy
>>>>> with
>>>>> somewhat bigger power levels and rather large arrays , (possibly
>>>>> mal-adjusted ?)
>>>>>
>>>>> Is this a band like 500 with enhanced propagation ?
>>>>>
>>>>> WHAT IS THE POSSIBILITY OF A TA DECODE ?
>>>>>
>>>>> The frequency range is 160 to 190 KHz. This is most commonly known as
>>>>> Part-15 operation ( under our FCC Part-15 rules ). The basics: Power is
>>>>> limited to 1 Watt DC Input to the Final amplifier, and the antenna
>>>>> length
>>>>> cannot exceed 15 meters, including the feed line,
>>>>>
>>>>> (XR4TN is the experimental call of KU4XR)
>>>>>
>>>>> 2010-12-10 11:16 XR4TN 0.185701 -27 0 EM75xr +30 1.000 W1VD FN31is 1148
>>>>> G..
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>> --
>>
>>
>
>
>
>
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
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