WA6LOL Newbie

[dave hobbs]

think I got this workin. Im in Sonora @ 2000 ft 14 el yagi 160 deg interested in making some test contacts tx Dave

[Miki Lustig]

Hi —

Aiming WSPR on 2m (144.498 +1520Hz)  towards Sonora from Moraga putting 45W into 12 element yagi.

— Miki

On Jun 19, 2021, at 12:56 PM, dave hobbs <daveho...@gmail.com> wrote:

think I got this workin. Im in Sonora @ 2000 ft 14 el yagi 160 deg interested in making some test contacts tx Dave

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[WA6LOL]

just got ur msg. gotta figure out email notifications on this... turned my beam that way will call/rec now tx dave 03:56 utc

[dave hobbs]

hi miki I heard you 05:42. did you hear me?

[dave hobbs]

0608 -27 0.5 144.490560 4 KK6MRI CN81 47 280

[Miki Lustig]

I’m only hearing N6KOG at the moment. 

Sorry for the wrong grid-square! It was left from when I was working mobile. 

I’ll keep my station on 2m pointing at you— let’s see what goes. 

— Miki

To view this discussion on the web visit https://groups.google.com/d/msgid/2-meter-wspr/a8dcc8ff-47f3-4cf2-a96a-dea8ac69c76cn%40googlegroups.com.

[dave hobbs]

Tx Miki. I heard You last night, I hear n6kog this morning. I see on "wspr spots" kog heard me this morning. Ihave my beam at you now xmiting and recvg...

[n3...@aol.com]

11:15 local I'll send some sequences up that way

N3IZN

DM13ji

https://groups.google.com/d/msgid/2-meter-wspr/f112c5d0-35e0-4ecc-aac7-1fe638151aa9n%40googlegroups.com

.

[n3...@aol.com]

And the RTL dongle out performs the 30 year old radio with knobs.

2021-06-20 19:32

N6KOG

144.490459

-29

0

CM97gs

200

N3IZN/1

DM13ji

624

141

https://groups.google.com/d/msgid/2-meter-wspr/1253820740.1561547.1624212941646%40mail.yahoo.com

.

[Mr B r a d]

would love to work more wspr ,

 but I keep getting a error when i run wspr now....

screen shot attached.. any ideas ?

brad

ko6kL

hf side                                                                          50+ side

[KP4MD]

Hi Dave,

I just heard about your 2 meter WSPR operation on our Monday morning WSPR Zoom chat.  

My WSPR station in Citrus Heights, CA is now frequency hopping between 2m and 70cm.

My 2 meter antenna is a stack of two halos at 6m above ground.

73,

Carol KP4MD, CM98iq

Citrus Heights, CA

[KP4MD]

Dave,

You have been spotting me on 2 meters since I raised my power from 10 watts to 100 watts. 

Timestamp             Call         MHz              SNR Drift Grid    Pwr Reporter  RGrid      km    az   Mode
2021-06-21 16:26  KP4MD  144.490581  -24  2  CM98iq  100  WA6LOL  CM97tx  112  134  2 
2021-06-21 16:26  KP4MD  144.490510  -8  0  CM98iq  100  N6KOG  CM97gs  103  188  2 

Note that you reported 2 Hz drift on my signal.

As my transmitter is GPS disciplined, the reported drift is most likely due to temperature instability in your reference oscillator.

I suspect this is your WSPR signal trace at 1640 UTC on this waterfall.

Your frequency started around 144.490430 and drifted up to 144.490440 MHz.

Two sharply intersecting diagonal lines from aircraft scatter are also visible on the signal.
I did not decode the transmission since WSJT-X fails to decode WSPR signals that exceed a 4 Hz drift.

Cyclic temperature increase during each 2 minute transmission period is a common problem that affects VHF transmitters.

I experienced a similar problem before I worked on stabilizing my transmitter frequency.

Carol KP4MD

[KP4MD]

Dave,

You may improve the frequency drift by decreasing your transmitter power.  

The crystal oven option in my XV144 transverter did not provide sufficient frequency stability for WSPR operation.
I documented my experience with this problem on this web page https://www.qsl.net/kp4md/xv144.htm

Carol KP4MD

[Miki Lustig]

A nice trace finally!

[dave hobbs]

kp4md carol thank you so much for yhe diagnosis, you provided me with lots of good info, im gonna get that gps lock,and reduce power on my ic 9700 in the mean time also add some cool air to the radio.seems like a common oscillator so I can see my drift on the rcv end....tx carol   Dave

[dave hobbs]

tx Miki that might have been at reduced pwr, Im going to try that some more Dave

also building a horiz 2m loop yagi...

[dave hobbs]

carol, so I turned down the power to 2w and kicked on the pql amplifier and now have same 100 w out but the radio runs cooler, however turning on the amps switching 50v 60a supply raises my noise floor quite noticably, any ideas about switching power supplies and rcvr noise?

[KP4MD]

Hi Dave,

My MFJ-4245 switcher supply is RFI free on 2m.  You might consider clip on ferrites on all your power supply wires, or better, wind a few turns through ferrite rings.

We appear to be decoding more of your spots since you dropped your exciter power.  

Here below is a screen capture of an old version WSPR app showing severe "banana" traces of another station's transmissions that failed to decode due to thermal frequency drift.

This web page https://www.qsl.net/kp4md/144_mhz_wspr.htm shows other phenomena that we observed while our Northern California 2m WSPR study group was very active.

You might be able to decode some of our 432.300 MHz WSPR transmissions.  N6KOG in Tracy can spot my 432 MHz WSPR although my 6 element cubical quad is fixed at 230° bearing.  

My WSPR rig is a Flex-1500 exciter driving the Elecraft XV-144 transverter and Mirage B-2518-G amplifier on 144.490510 or a Down East Micro L432-28H transverter on 432.301510 MHz, all GPS frequency disciplined.

73, Carol KP4MD

The 6 element 432 MHz cubical quad and one of my pair of stacked 144 MHz halo antennas.

[n3...@aol.com]

Lookie there

2021-06-22 04:18

WA6LOL

144.490433

-29

3

CM97tx

100

K6TW

DM03

515

166

-----Original Message-----
From: KP4MD <kp...@cfmilazzo.com>
To: 2 Meter WSPR <2-mete...@googlegroups.com>
Sent: Mon, Jun 21, 2021 6:06 pm
Subject: Re: {2 Meter WSPR} WA6LOL Newbie

https://groups.google.com/d/msgid/2-meter-wspr/ca15a870-505a-4260-88cd-db458ece8087n%40googlegroups.com

.

[dave hobbs]

This is fun

[Miki Lustig]

I’m getting KD6RC from the side of my 12 ole beam……

To view this discussion on the web visit https://groups.google.com/d/msgid/2-meter-wspr/4ba124ef-7484-4f6b-af40-8a5982b343ebn%40googlegroups.com.

[dave hobbs]

Hi Miki..Are you vertical or horizontal?

[Miki Lustig]

Horizontal

To view this discussion on the web visit https://groups.google.com/d/msgid/2-meter-wspr/cb7b10af-6297-4484-86bf-51ade987af35n%40googlegroups.com.

[dave hobbs]

Miki are you getting my transmissions? I have not been spotted on wspr.net for 5 hours

[KP4MD]

Dave,

I see our faint traces now.  Tropo propagation will improve with upper atmosphere cooling in the evening.

Carol

[dave hobbs]

Hi Carol, tx so much for the study data. Ive been keeping the beam pretty much default south 165 deg thru the gorman pass lookin for so cal except when I swing it to look for other things. Ill be looking east for george some.

[KP4MD]

2m WSPR activity in Northern California has been high over the last 24 hours.

[Thomas Yarish]

Looks like a WSPR brush fire.

Any tropo?

KJ6MKI

On Jun 25, 2021, at 3:04 PM, KP4MD <kp...@cfmilazzo.com> wrote:

2m WSPR activity in Northern California has been high over the last 24 hours.

To view this discussion on the web visit https://groups.google.com/d/msgid/2-meter-wspr/155ab2a4-4578-45e2-a8ec-4e0b1209f896n%40googlegroups.com.
<144_WSPR_2021-06-25.png>

[dave hobbs]

kj6mki
re tropo   Ive been spotted in Torrance a dozen times or so 515 km from Sonora over the past few days. Seems to occur when hepburn tropo charts say it should