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[LF] 474.2 KHz - Success!

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k6dgw

[LF] 474.2 KHz - Success!

The WSPR screen was full of transmissions this AM! My grid is CM98LW

The log starts at 0245 UTC when it was still not dark.

Call Grid SNR
WH2XGP DN07 -20
WG2XXM EM15 -30
WG2XSV CN85 -27
WG2XIQ EM12 -28

SNR's maxed out a few hours before sunrise here in the -5 to -1 dB
range. Here's what I learned:

The new synthesizer does in fact work very well in the LF/MF range. You
need the KXV3(A) option, anyone with a P3 has it. I used my flagpole
[~25 ft] on the corner of our deck for the antenna, I've got a single
wire from its base that comes into the shack which I plugged into the RX
ANT jack. Tapping RX ANT made everything come alive. It also brought
up the preamp which was way too much. NDB "LV" was very strong in a CW BW.

WSPR was set for RX only. Haven't figured out yet how to send my spots
into WSPRNet or how to interpret it. I'll run again tonight using my
large sloping-V low band antenna.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org

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drewko

Re: [LF] 474.2 KHz - Success!

Got my K3 all set up for 600 WSPR reception but couldn't try it last
night due to tstms.

To send spots just check the "Upload Spots" box on the WSPR app GUI.
You should see your callsign appear on the WSPRnet activity webpage as
one of the monitoring stations, even if you haven't actually uploaded
any spots yet. You will be listed as "K6DGW 0.475700R" along with
other monitoring stations. (You may have to set up a login account on
WSPRnet first, not sure...)

Click on the Database section of the WSPRnet site and filter
accordingly to see your actual uploaded spots.

Click on the Map section to see the current 600m activity. You will
see your callsign/location on the map as well.

73,
Drew
AF2Z

On Tue, 21 Apr 2015 09:23:42 -0700, you wrote:

>The WSPR screen was full of transmissions this AM! My grid is CM98LW
>
>The log starts at 0245 UTC when it was still not dark.
>
>Call Grid SNR
>WH2XGP DN07 -20
>WG2XXM EM15 -30
>WG2XSV CN85 -27
>WG2XIQ EM12 -28
>
>SNR's maxed out a few hours before sunrise here in the -5 to -1 dB
>range. Here's what I learned:
>
>The new synthesizer does in fact work very well in the LF/MF range. You
>need the KXV3(A) option, anyone with a P3 has it. I used my flagpole
>[~25 ft] on the corner of our deck for the antenna, I've got a single
>wire from its base that comes into the shack which I plugged into the RX
>ANT jack. Tapping RX ANT made everything come alive. It also brought
>up the preamp which was way too much. NDB "LV" was very strong in a CW BW.
>
>WSPR was set for RX only. Haven't figured out yet how to send my spots
>into WSPRNet or how to interpret it. I'll run again tonight using my
>large sloping-V low band antenna.
>
>73,
>
>Fred K6DGW
>- Northern California Contest Club
>- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
>- www.cqp.org

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drewko

Re: [LF] 474.2 KHz - Success!

In reply to this post by k6dgw

I set up WSPR last night on 474 KHz here from SNJ. Receive only using
a 90 ft endfed wire antenna, my K3 with new synth card. Logged 137
reports with 6 different stations as far as 1300 miles west. They
were running between 1 and 10 watts.

73,
Drew
AF2Z

On Tue, 21 Apr 2015 09:23:42 -0700, you wrote:

Eric NO3M

Re: [LF] 474.2 KHz - Success!

Thanks for the reports from both AF2Z (48) at 472 km and K6DGW (6) at
3449 km. Best SNRs reproduced below:

2015-04-22 07:18 WG2XJM 0.475775 -19 0 EN91wr
10 K6DGW CM98lw 3449 279

2015-04-22 06:38 WG2XJM 0.475776 0 0 EN91wr
10 AF2Z FM29lw 472 113

Just a note about power levels reported. It is a general practice, at
least amongst the US. 630M experimental ops, to report estimated ERP
instead of actual TPO (transmitter output). With the low antenna
efficiencies that come with this territory, that generally means most
stations are running 100W or more TPO. The antenna here is a 67 ft
vertical w/ 8x30ft top loading wires and about 22000 ft of radials
covering approx 350x350ft area in an open field. The ground is damp most
of the year. Last measured ground + coil loss was around 4.5 ohms, for
an efficiency of approx. 16%. That is considered high, most
efficiencies are in the < 5-8% range.

Hope to see you guys again. The real fun will start back up mid to late
fall and through winter when there are regular CW QSOs going on, incl.
coast to coast (yes, at 10W ERP or less). Though, WG2XIQ in TX was good
enough this morning (-4 SNR 2.5kHz BW) to complete a CW QSO, which we've
had many over the course of summer.

73 Eric NO3M
(WG2XJM)

On 04/22/2015 07:17 AM, drewko wrote:

> I set up WSPR last night on 474 KHz here from SNJ. Receive only using
> a 90 ft endfed wire antenna, my K3 with new synth card. Logged 137
> reports with 6 different stations as far as 1300 miles west. They
> were running between 1 and 10 watts.
>
> 73,
> Drew
> AF2Z
>
>
>
> On Tue, 21 Apr 2015 09:23:42 -0700, you wrote:
>
>> The WSPR screen was full of transmissions this AM! My grid is CM98LW
>>
>> The log starts at 0245 UTC when it was still not dark.
>>
>> Call Grid SNR
>> WH2XGP DN07 -20
>> WG2XXM EM15 -30
>> WG2XSV CN85 -27
>> WG2XIQ EM12 -28
>>
>> SNR's maxed out a few hours before sunrise here in the -5 to -1 dB
>> range. Here's what I learned:
>>
>> The new synthesizer does in fact work very well in the LF/MF range. You
>> need the KXV3(A) option, anyone with a P3 has it. I used my flagpole
>> [~25 ft] on the corner of our deck for the antenna, I've got a single
>> wire from its base that comes into the shack which I plugged into the RX
>> ANT jack. Tapping RX ANT made everything come alive. It also brought
>> up the preamp which was way too much. NDB "LV" was very strong in a CW BW.
>>
>> WSPR was set for RX only. Haven't figured out yet how to send my spots
>> into WSPRNet or how to interpret it. I'll run again tonight using my
>> large sloping-V low band antenna.
>>
>> 73,
>>
>> Fred K6DGW
>> - Northern California Contest Club
>> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
>> - www.cqp.org
>>