Re: LF: On air again in LF WSPR-15

[N1BUG <paul@n1bug.com>]

Congratulations Luis.

I copied you the first time in the slot before my sunset. You were
in command for some time, then it switched over to Stefan. I just
uploaded some additional spots this morning.

I ruined at least one DK7FC period and probably one DF6NM because I
was making QSOs on 630m JT9 and making too much QRM.

WSPRnet is having problems with my spot uploads, sometimes it
duplicates them with one showing the correct time and one showing
one minute late. Maybe it's trying to make them fit a time slot
which makes sense to it (WSPR-2 timing).

I started putting the old low power PA back together. I should
finish that today but will probably not be transmitting tonight.
More snow in the forecast which means constant antenna changes. If
it does snow for sure I will stay on 630m where the antenna is much
more forgiving.

73,
Paul



On 11/21/18 4:25 AM, VIGILANT Luis Fernández wrote:
> Hi LF
> 
> After some time of forced QRT I’m again on air transmitting LF
> WSPR-15
> 
> Tried a first transmission in WSPR-2 yesterday at 19:30 and all
> the rest were WSPR-15 at minute 15 and 45 Found a “safe”
> combination of PA power for the 15min Tx. Need to modify the PA
> providing proper cooling. Anyway last night could work at 1600mA
> RF using a 16V@10A power supply
> 
> Got many spots from Paul, N1BUG but noting from Russia side.
> Completely different from Stefan which got a single decode from
> Paul, eleven decodes from Ruben EB8ARZ  and many from four
> Russian stations
> 
> I’m in contact with Alex, LU8YD to setup his Rx in WSPR-15 using
> WSJT-X and the modifications mentioned in this reflector. May be
> we can get some sourprises from South Amercia in LF. Worth a try
> 
> Talking about transistors, I purchased a pair of little beasts.
> This are TO-247 devices rated 1Kw max dissipation and 500V 60A
> 0.1Ohm Rds. And the price is not so high for low quantities €6.90
> at Farnell for less than 5 pieces
> 
> It does not mean you can squeeze them to 1Kw but for a G0MRF
> classD PA they always run safely so will last long and hopefully
> worth the purchase. For those interested, the device is made by
> IXYS IXFH60N50P3
> 
> About WSPR-15 notification to SWLs I added a post to the WSPRNET
> forum http://wsprnet.org/drupal/node/7891
> 
> Some of the posts can be seen in the initial page at
> http://wsprnet.org/drupal/  but seems that they are selected
> manually by administrators, so there can be some delay to see it
> in first page. Hope they can spread the news, because there are
> still many SWLs using WSPR-2 only in LF, specially in north
> America. Would be also interesting to get the US Tx stations in
> WSPR-15 too That would speed up transition. This is a RARE event
> this days, updating to an “old” mode. May be Microsoft take note
> of it and be back to Win7  ;-)
> 
> 73 de Luis EA5DOM