Equipment & Test

Coming soon ...



A Direct Sampling Wideband Receiver which features up to 24MHz of bandwidth. Embeds a Reference Clock Manager Module which allows to choose between two reference clocks, a GnssDO (Global navigation satellite system Disciplined Oscillator) or a 10MHz external signal.

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.

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.

The DT 770 replaces Sennheiser's HD 465. @home I'm still using the old Staxx Flat membrane headphone.

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.

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

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