NJDTechnologies

Radio: it's not just a hobby, it's a way of life

Current Operating Frequency and Mode

OFF AIR but will be QRV on CW somewhere between 472.5 kHz and 475 kHz after dark

SCHEDULED ACTIVITY: CQ 474.5 kHz CW by 1030z through sunrise most days, WX permitting

Strong night for trans-Atlantic propagation, FR5ZX reports SV8CS, WH2XCR –> JA, VK, QRSS30 from WA2XRM, And a few MFSK16 pictures from the W7/VE7 gang

– Posted in: 630 Meter Daily Reports, 630 Meters

Another night of curiously strong band conditions on 630-meters.  During the evening I noted that most signal had a smudged appearance in the waterfall, where the signals lacked clearly defined boundaries.  WSPR signals were decoding with no problem and signals were all generally very strong with a low noise floor which improved as the evening progressed.  Perhaps this is an artifact of the geomagnetic activity that has been in progress.  Solar wind continued to peak of 600 km/s through much of the session but at the time of this report’s development during the noon hour on Tuesday, the solar was in down to the mid-500 km/s range.  The Bz component generally ranged from + / – 5 nT through the session.

planetary-k-index 120815

The Kyoto DST was generally stable, remaining slightly negative.  Perhaps this stability is a testament to the success experienced by WH2XCR through the session with solid, persistent reports to both JA and VK.

Kyoto DST 120815

Kyoto DST for December 2015

John, VE7BDQ, Toby, VE7CNF, and Neil, W7IUV /  WH2XGP, had some fun with MFSK16 during the evening.  Toby was sending pictures which I did not know was possible with MFSK16.  Neil reports that the group was using FLDigi to send and decode and John, noted that MFSK16 often does better than traditional SSTV.  Even more important is that the mode does not require a linear amplifier.  Details on MFSK in FLDigi can be found here.  Here are a few screen shots of Toby’s transmissions from Neil and John:

VE7CNF color MFSK16

VE7CNF MFSK16 color picture mode, as received by VE7BDQ

 

VE7CNF BW MFSK16 picture

VE7CNF MFSK16 black and white picture mode, as received by VE7BDQ

 

VE7CNF WG2XSV MFSK16 120815

VE7CNF MFSK16 picture mode, as received by W0YSE/7 / WG2XSV

 

What’s remarkable about the last shot is that even with the noise, Neil was able to receive enough of a signal for a QSO had reports been exchanged.  I inquired about the S/N reported during this transmission but Neil did not know.  The signal is still quite serviceable.  This is a mode that I will have to try sometime.  I had no idea that it could function as more than a keyboard-to-keyboard mode.

Also active through this session was Paul, W0RW / WA2XRM, who was operating QRSS30 again.  There has been more discussion about the frequency instability but the “RW” signal is easily decoded visually in the screen shot below from Jim, W5EST.

WA2XRM W5EST QRSS30 120815

WA2XRM QRSS30 , as received by W5EST

 

WSPR activity dominated the session, with 86 MF WSPR stations reported at 0300z on the WSPRnet activity page.  The continental and regional breakdown follows:

NA 120815

North American 24-hour WSPR activity

 

EU 120815

European 24-hour WSPR activity

 

JA 120815

Japanese 24-hour WSPR activity

 

VK 120815

Australian 24-hour WSPR activity

 

Trans-Atlantic activity was high once again, with John, WA3ETD / WG2XKA, being reported again by G3XKR, and Mike, WA3TTS, reporting Stefan, DK7FC with his reversible EWE receive antenna system located on a suburban lot.

WG2XKA G3XKR 120815

WG2XKA, as reported by G3XKR

 

DK7FC WA3TTS2 120815

DK7FC, as reported by WA3TTS/2

 

DK7FC WE2XGR 120815

DK7FC, as reported by WE2XGR

 

DK7FC WD2XSH17 120815

DK7FC, as reported by WD2XSH/17

 

G8HUH WD2XSH17 120815

G8HUH, as reported by WD2XSH/17

 

PA3ABK2 WD2XSH17 120815

PA3ABK/2, as reported by WD2XSH/17

 

Mike, WA3TTS, posted this description of his receive antenna system and screen shot of his console on RSGB “Blacksheep” reflector:

WA3TTS ant1 120815LFMFEWE 120815

ewegnd 120815

WA3TTS ant2 120815

DK7FC screen shot WA3TTS2 120815

WA3TTS/2 630-meter WSPR2 console

 

The trans-African path from Europe to Reunion Island was open to only one European station last night, SV8CS:

FR5ZX 120815

FR5ZX 24-hour WSPR activity

 

SV8CS FR5ZX 120815

SV8CS, as reported by FR5ZX

 

In the Caribbean, Eden and Roger report most of the active usual suspects:

ZF1RC 120815

ZF1RC 24-hour WSPR activity

 

ZF1EJ 120815

ZF1EJ 24-hour WSPR activity

 

In Alaska, Laurence, KL7L / WE2XPQ, had a slightly better night as auroral activity tries to settle down.  It will likely take several calm sessions before the possibility exists for activity to begin looking normal again, at least by 2015 standards.

WE2XPQ 120815

WE2XPQ 24-hour WSPR activity

 

In the Pacific, Merv, K9FD/KH6 / WH2XCR, had a strong session with persistent reports from two JA’s and one VK station.

WH2XCR 120815

WH2XCR 24-hour WSPR activity

 

WH2XCR WK2XGJ 120815

WH2XCR, as reported by VK2XGJ

 

WH2XCR JH3XCU1 120815

WH2XCR, as reported by JH3XCU/1

 

WH2XCR JA1NQI1 120815

WH2XCR, as reported by JA1NQI-1

 

John, VK2XGJ, sent a screen shot of his console from the session showing Merv’s reports:

VK2XGJ consolve 120815

VK2XGJ WSPR console

 

Phil, VK3ELV, continues to receive reports from JA, which I believe is important in the continued success of reports for Merv in VK as we progress towards summer in the southern hemisphere.

VK3ELV 120815

VK3ELV 24-hour WSPR activity

 

VK3ELV JH3XCU1 120815

VK3ELV, as reported by JH3XCU/1

 

Other anecdotes and statistics:

Doug, K4LY / WH2XZO, indicates that he had 225 reports with positive S/N values that were over 600 km away, with the best being +11 db S/N from W9HLY and WH2XRR.  Doug interferes from this that he has a lot of high angle component.

I’ve been absent for a few days from my morning CW session for a variety of reasons but hope to get back to a routine shortly.

Additions, corrections, clarifications, etc?  Send me a message on the Contact page!