Re: LF: Re: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

[Iban Cardona <icardona@gmail.com>]

Hi Graham,

First I have to say that I live in a small town and is quiet zone. And at home and my shack I cleaned all my RFI.

The loop es bit more quiet and directive, then the signals should be over from 2 or 4dB better than the mini-whip in all the periods at 477k. In some cases make the difference to receive or not receive some station.

The active-antenna.eu loop have different setups. Currently I'm using a single loop of two meters of diameter, using 1/2 inch coax. It is located at the same height  and zone of the mini-whip. But need test another loop setups and sizes. I have to test the vertical symmetrical short dipole too.

At 136 is working better the mini-whip, because as the loop is oriented to Europa I'm loosing the VO1NA QRSS. I need more time to see what is better at 136, and tests another setups too.

What is better? Not easy to say... the loop works better, but not is omnidirectional and can lose some stations.

73! Iban

eb3frn

On Tue, Sep 29, 2015 at 1:43 AM, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

Ok  Iban,

 

The  question  is , which is the  best  ? difficult ,  both  have the  same  s/n  ,   may be  the  mini-whip  ? as   same  s/n  , more % fade , [more dropped bits]  peak  signal  must be  higher  ?  or the  qsb deeper ?

 

73-G,

 

 

 

From: Iban Cardona

Sent: Monday, September 28, 2015 8:04 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Re: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

Hi, Graaham

this the edata:

EB3FRN Afredi netsdr + 2mt active loop 

EB3FRN-1 ICOM R9000 + mini-whip

73! Iban

eb3frn

On Mon, Sep 28, 2015 at 8:53 PM, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

 

-1  Rx ?

18:51 477 PA3ABK de EB3FRN Op8 759 mi -30 dB F:13% in MONTBRIO 1503.9 Hz with 0.5w + Marconi lin. loaded top 45m total

18:51 477 PA3ABK de EB3FRN-1 Op8 759 mi -30 dB F:17% in MONTBRIO 1501.5 Hz with 0.5w + Marconi lin. loaded top 45m total

 

 

From: Graham

Sent: Monday, September 28, 2015 6:37 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Re: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

Ok Luis

 

Yes , had to be something  'loopy' going  on , from the  levels ,  25 watts  should  do  the  job then , was the  level  16  watts  before ?

 

GL with the  vertical ,  if its  locations is  where  I think  it  will  be : -)   you  may not  need  the variometer , just a  tapped  coil and  a  var-capacitor from a  old  valve Rx

 

Are you still  sending    opera/wspr  ?  or  just  OP8 , no  wspr spots showing during daylight  to  day ?

 

73-G,

 

 

2015-09-28 07:00	EA5DOM	0.475613	-28	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-28 02:00	EA5DOM	0.475612	-25	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-28 01:48	EA5DOM	0.475612	-24	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-28 01:36	EA5DOM	0.475612	-25	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-28 01:00	EA5DOM	0.475613	-26	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-27 23:12	EA5DOM	0.475613	-25	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-27 22:48	EA5DOM	0.475613	-26	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-27 22:36	EA5DOM	0.475613	-26	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-27 21:24	EA5DOM	0.475613	-27	0	IM98wn	0.002	EB3FRN	JN01mc	300	19
2015-09-27 18:48	EA5DOM	0.475617	-25	0	IM98wn	0.002	EB3FRN	JN01mc	300	19

From: VIGILANT Luis Fernández

Sent: Monday, September 28, 2015 4:02 PM

To: rsgb_lf_group@blacksheep.org

Subject: RE: LF: Re: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

Hi Graham

 

The answer is ... QRO :)

 

I'm running the 100w PA made by Fausto IK4NMF. Not big signal increase in local (7km) decodes but

clear difference at 300Km as seen by EB3FRN

 

After improving loop matching, PA works at full power. Fortunately Opera8 keeps the PA almost cold

while a single WSPR-2 period is a real stress test. Loop match is still far from perfect and stressing

full power modes are not wellcome with this setup 

 

As Stefan told, keeping the loop tuned is an endless task and not the way to go for QRO/Dx

Even worse for a flat horizontal loop like mine

 

Next in the list is going vertical. Coil and variometer on the way. Keep tuned ;-)

 

73 de Luis

EA5DOM

 

 Audacity  of it , in board daylight   as well

 

These are all  well  above the  Dynamic switch over level , Q question  for the  propagation dep't  , what's  changed ?

local decode  levels  still  -5/-6 dB  , but that  path is  upto  6 dB  less attenuation [ opera > dynamic  s/n still  average  and  same calibration]

 

73-G,

14:32 477 EA5DOM de EB3FRN Op8 -28 dB F:11% in MONTBRIO 1482.9 Hz

14:20 477 EA5DOM de EB3FRN Op8 -27 dB F:8% in MONTBRIO 1482.7 Hz

14:08 477 EA5DOM de EB3FRN Op8 -29 dB F:8% in MONTBRIO 1482.9 Hz

13:56 477 EA5DOM de EB3FRN Op8 186 mi -28 dB F:8% in MONTBRIO 1482.4 Hz

13:56 477 EA5DOM de EA5DOM-1 Op8 4 mi -6 dB F:14% in Albir 1479,5 Hz

12:44 477 EA5DOM de EA5DOM-1 Op8 -5 dB F:9% in Albir 1479,5 Hz

12:44 477 EA5DOM de EB3FRN Op8 -30 dB F:13% in MONTBRIO 1482.7 Hz

From: Iban Cardona

Sent: Sunday, September 27, 2015 1:08 AM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: Re: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

Hi, Graham

copying to G6AVK too, with nice signals

23:05    477 G6AVK Op8 1503.9 Hz -25 dB Fade: 2%

I attach a pict from my grabber where can see EA5DOM and G6AVK at the same time

73! Iban

eb3frn

On Sun, Sep 27, 2015 at 2:00 AM, Graham <g8fzk@g8fzk.fsnet.co.uk> wrote:

True Luis  , just like  just like  VW 'crazy' code  :- )

 

 Good signals  in the  night  to  EB3FRM !

 

73-G,

EA5DOM de SWL-EB3FRN (Spain): Op8 F:25% -28 dB in MONTBRIO 1489.0 Hz

EA5DOM de SWL-EB3FRN (Spain): Op8 F:12% -32 dB in MONTBRIO 1488.5 Hz

 

From: VIGILANT Luis Fernández

Sent: Saturday, September 26, 2015 4:18 PM

To: rsgb_lf_group@blacksheep.org

Subject: LF: Re: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

You catched me Graham ! ;-)

Running the horizontal loop again. Better matching to the PA than before, but only 8W now

I have continued Txing WSPR and Opera8 during daylight hours. Nothing on WSPR-2 at EB3FRN

but Opera is decodable at Deep Search. Turned on my monitor to confirm the spots and then

the Deep Search spots marked as "??" go without question marks

12:59    477 EA5DOM de EB3FRN Op8 Deep Search -34 dB in MONTBRIO 1488.8 Hz

12:58    477 EA5DOM de EA5DOM-1 Op8 -5 dB F:13% in Albir

12:35    477 EA5DOM de EB3FRN Op8 Deep Search ?? -36 dB in MONTBRIO 1488.8 Hz

12:23    477 EA5DOM de EB3FRN Op8 Deep Search ?? -36 dB in MONTBRIO 1488.8 Hz

11:59    477 EA5DOM de EB3FRN Op8 Deep Search ?? -35 dB in MONTBRIO 1488.8 Hz

Big difference over WSPR-2 and even taking in consideration the higer QRM at EB3FRN

during daylight hours

73 de Luis

EA5DOM

---

De: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] en nombre de Graham [g8fzk@g8fzk.fsnet.co.uk]
Enviado: sábado, 26 de septiembre de 2015 1:40
Para: rsgb_lf_group@blacksheep.org
Asunto: LF: 23:35 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

Jump in Opera activity to  day ,  with excellent conditions on   14 MHz  UK/EU<>VK  

LF/MF - Note the  PSK map  ONLY shows  opera  data  decodes , Dynamic spots are  routed via the  Opera APP 

Good demonstration of running a local ' Rx  on LF and MF  by EA5DOM , only reaching EB3FRN in Dynamic , but validated by the local off air time stamp and recovered average frequency , within 200 mHz , -36 dB is about the  lower limit for  op8D

23:35    477 EA5DOM de EB3FRN Op8 Deep Search -36 dB1489.0 Hz

23:34    477 EA5DOM de EA5DOM-1 Op8 -5 dB F:1%_End in Albir

23:23 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB in1488.8 Hz

23:22 477 EA5DOM de EA5DOM-1 Op8 -5 dB F:1%_End in Albir
23:11 477 EA5DOM de EB3FRN Op8 Deep Search -36 dB in MONTBRIO 1488.8 Hz
23:10 477 EA5DOM de EA5DOM-1 Op8 -5 dB F:2% in Albir

Dynamic spots not  showing 

21:24    136 RN3AGC de G3XDV Op32 Deep Search -42 dB in Welwyn 1535.8 Hz

20:42    136 G3XDV de EW6BN Op32 Deep Search 1204 mi -42 dB 

20:37    136 IZ7SLZ de SV8RV-4 Op32 Deep Search -41 dB 

20:37    136 IZ7SLZ de G4WGT Op32 Deep Search -42 dB 

20:37    136 IZ7SLZ de SV8RV-1 Op32 Deep Search -42 d

 

73-G,