Thursday, November 26. 2020ELAD FDM-S3 - OCXO Version with GNSS Antenna - First test resultsTested on two differently equipped win8.1 systems ■ The short story of a long birth
Defined tags for this entry: elad fdm-s3, ocxo Last modified on 2020-12-20 13:26
Monday, October 12. 2020Mediumwave through the USA & Canada puzzle
This section displays the status of my logged USA & Canada states. It will be updated.
![]() List of abbreviations for states Pin board at Google Maps Status 27 October 2020 Heard states/green (USA): 27 Confirmed states/red: 5 Latest heard or confirmed: Heard states/green (Canada): 6 Confirmed states/red: 2 Latest heard or confirmed: 1140 CHRB High River (AB) ![]() 840 CFCW Camrose (AB) ![]() 1060 CKMX Calgary (AB) ![]() 960 CFAC Calgary (AB) ![]() Map source: Free Software Foundation. The source has been changed. Sunday, September 27. 2020LOG: 560 kHz, NCN Voice of Guyana![]() Guyana is a small country on the northern flank of South America, on the Atlantic Ocean. The studios are located near the city of Georgetown, in Vreed en Hoop, at the mouth of the Demerara River. NCN runs three government controlled radio services: Fresh 100.1 FM, Voice of Guyana 560 AM and an 102.1 FM, and Hot FM, 98.1 FM. On September 26, 2020, the BBC Worldservice was broadcast between 0500z and 0530z via VoG. IDs were heard at the beginning and end of the period. ![]() A Screenshot from SDR Console V.3.0.23. To the left on 558 kHz is RNE from Spain which dominantes the frequency, and most of the time the area around. So, Guyana was a good catch on this September morning. The station was audible up from 0400z first under heavy QRM from Spain . Antenna was the 78 m Double Delta Loop pointing 325°. Receiver ELAD FDM-S2. And booster RPA-2 from DX-Engineering. Friday, July 31. 2020Listener's choice![]() Listener's choice: new headphone beyerdynamic DT 770 Pro The DT 770 replaces Sennheiser's HD 465. @home I'm still using the old Staxx Flat membrane headphone. Defined tags for this entry: equipment test, station Not modified
Saturday, May 23. 2020Test: ELAD FDM-S2 with the Intona USB 2.0 High Speed Isolator
These days I had the opportunity to test an Intona USB 2 high speed isolator on the SDR. Since I use the FDM-S2 at different locations, I decided for a disturbing reception area at home.
Unscreened USB cables were used for the first test setup. The antenna is the ALA 1530 S +. In Figs. 1 and 2 it can be seen that the intona increases the interference level in the medium wave range by an estimated 30 dBm. That was sufficient to put the galvanic isolator of the USB cable back into the original packaging. ![]() ![]() Shielded USB cables were used days later. Here the isolator behaved as intended: it reduced the interference by 6-10 dBm. In my setup, a wound ferrite core was used, which was connected with and without an insulator. Fig. 3 shows the setup without isolator, Fig. 4 with isolator. The crackling noise level was not reduced but appeared as a chopped noise level on the screen and in the headphones. No faults were eliminated here, but an attempt was made to output them modulated differently. ![]() ![]() The USB isolator behaves - without a measuring device - like a ferrite core for troubleshooting or like a standing wave barrier. For the proud price of 250 € you can buy 100 Amidon FT-140-43 ferrite cores. They are definitely a better alternative than the USB isolator from Intona. Defined tags for this entry: equipment test, noise Last modified on 2020-05-23 19:47
Monday, February 24. 2020Good conditions with the Double Delta Loop (DDA)
It takes some getting used to, my new DDA with a total length of 78 m. However, in a positive sense, because you first have to get used to the high SNR. It is simply unbelievable what this antenna brings compared to a 50 m wire. Therefore, it can happen that the supposedly good conditions are actually bad as long as you still have the signals of the 50 m wire in your ear. The DDA does not take up more space than the wire mentioned, its structure only goes up. The signal strengths should be comparable to that of a beverage over 100 m long. So it was the best idea ever to pull up this more complex antenna shape in the garden. It now replaces two 50 m wires in the direction of 325 ° and 350 °.
On 16 Feb 2020 I was able to follow reasonably good conditions across the Atlantic for the first time. On this day, some stations never heard before with unusual signal strengths came in. Unusual means signals with over 40 dB SNR. At the same time, the usual channels from the east coast were mostly weaker. An outlier was KLEB, Golden Meadow (LA) 1600 with 250 watts and an SNR over 50 dB. All logs from that day [Entries in bold: the only log in the MW list | Entries in red: a first reception]: All my Logs: https://www.mwlist.org/mw_logmap.php?sort=qrg&datum=2020-02-16&hours=0&omid=281&band=MW 590 0452 CAN VOCM, Saint John's (NL) 4360 km 670 0615 CUB Radio Rebelde, Santa Clara/CTOM4 (vc) //1620 8005 km 680 0426 CLM HJZO Radio Nacional de Colombia, Sabanagrande (Barranquilla) (atl) 8620 km 710 0400 USA WOR, New York/Lyndhurst [NJ] (NY) 6179 km 730 0700 CAN CKAC, Montréal/Pointe-Calumet (QC) 5843 km 750 0359 CAN CBGY, Bonavista Bay (NL) ID This is CBC Radio 1 4367 km 760 0400 USA WJR, Detroit (MI) 6648 km 770 0620 B ZYL209 Rádio Cultura AM, Lavras (MG) ID Radio Cultura 9559 km 860 0413 CAN CJBC, Toronto/Meadowvale (ON) 6338 km 920 0628 CLM La Voz del Pueblo, Ibagué (tol) prob., ID Radio Maria, Radio Maria from Mexico may also be an option. 9197 km 970 0632 USA WZAN, Portland/Sunset Park (ME) 5742 km 1010 0700 CAN CFRB, Clarkson (ON) 6331 km 1120 0500 USA KMOX, Saint Louis (MO) 7329 km 1130 0600 USA WBBR, New York/Carlstadt [NJ] (NY) 6175 km 1140 0400 CAN CBI, Sydney (NS) 4931 km 1270 0634 USA WXYT, Detroit (MI) CBS sports radio ID 6667 km 1280 0644 USA WHTK, Rochester (NY) Fox ID, another option is WPKZ 6235 km 1330 0642 USA WRCA, Watertown (MA) 5888 km 1380 0547 CAN CKPC, Brantford (ON) 6406 km 1390 0640 USA WEGP, Presque Isle (ME) 5399 km 1470 0400 CLM Esperanza Colombia Radio, Medellín (ant) 9063 km 1480 0643 USA WDJO, Cincinnati (OH) ID 6953 km 1500 0700 USA WFED, Washington (DC) 6498 km 1510 0614 USA WLAC, Nashville (TN) 7325 km 1520 0642 USA WWKB, Buffalo (NY) 6337 km 1560 0646 USA WFME, New York/Queens (NY) 6174 km 1580 0643 CAN CKDO, Oshawa (ON) 6252 km 1590 0643 USA WARV, Warwick (RI) rel. px 5944 km 1600 0642 USA KLEB, Golden Meadow (LA) ID 1600 am KLEB, booming! 50 dB SNR 8111 km 1640 0541 USA WTNI, Biloxi (Gulfport) (MS) Possum ID, booming 37 dB SNR 7931 km 1660 0650 USA WBCN, Charlotte (NC) ID Fox sports radio 7033 km 1660 0642 USA WWRU, Jersey City/Carlstadt (D) (NJ) 6176 km 1690 0625 USA WPTX, Lexington Park (MD) 6523 km 1700 0639 USA KBGG, Des Moines (IA) ID The Champ 7298 km Wednesday, January 8. 2020A new double delta antenna is launched![]() After a long preparation time, a lot of gardening work and a failed attempt to set up the 8 m mast, the double delta antenna is ready and waiting for the connection of the balun / resistance box and the coax cable. As soon as the weather permits, initial tests can be carried out. The DDA is suspended from 2 guy points at a height of approx. 6 m. A compromise already resulted in the suspension. Anchoring points 8 m high were not possible because a mast bar could not be set up in this length. The horizontal wires run 1 m high. It is fitted with a 16: 1 balun. A terminating resistor has 1 kOhm. The resistor sits in a fuse holder and can be easily replaced with another if necessary. The total scope of the DDA is approx. 78 m. The targeted receiving direction at approx. 325 °. By using quick-change termination boxes, the DDA can also be quickly changed to approx. 155 °. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Pictures (from left to right) 1 Connected balunbox 2 Connected resistorbox 3 The 6m mast with guy lines 4 An aluminum pole in the ash bears the second anchor point 5 + 6 balun box with 16: 1 balun 7 + 8 box with 1kOhm resistor in the fuse holder Defined tags for this entry: antennas, planning construction Last modified on 2020-01-21 09:28
Thursday, December 5. 2019SWL log on amazon.deThursday, October 3. 2019Pictures: A new Flag-Loop for Mediumwave![]() Left: The terminating resistor of currently 820 ohms is waterproof in an HT tube. The connections are mounted on lamp terminals, without much effort to remove. Center: Middle: The mast top in 7.50 meters, to the left of K9AY mast. An aluminum tube of 4 m length carries the tip, attached to the plum tree with clamps, freestanding. Right: The 9:1 balun also resides in an HT pipe. The 4m long mast made of aluminum stands with only 2 guy wires in a ground pipe, which once served as a prop for a parasol. I still wrap my balune myself ... For the 40 m long wire I use galvanized uninsulated electric fence wire with a diameter of 1mm. Source: 1000 m / < 33 € Wednesday, October 2. 2019Comparison: A new Flag-Loop for Mediumwave![]() ![]() ![]() Shot 1: Flag-Loop. The noise level is near -138 dBm, signal at -105.3 dBm. Direction 80°. Shot 2: K9AY. The noise level is near -130 dBm, signal at -107.1 dBm. Direction 35°. Shot 3: 50 m longwire. The noise level is near -127 dBm, signal at -108.5 dBm. Direction 30°. Connected two CMCC. It looks a bit better than I suspected in the last post. The antennas were for comparison without preamplifier. Note: A precise statement can not be derived from this, all antennas should have had the same direction.
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