• Get involved.
    We want your input!
    Apply for Membership and join the conversations about everything related to broadcasting.

    After we receive your registration, a moderator will review it. After your registration is approved, you will be permitted to post.
    If you use a disposable or false email address, your registration will be rejected.

    After your membership is approved, please take a minute to tell us a little bit about yourself.
    https://www.radiodiscussions.com/forums/introduce-yourself.1088/

    Thanks in advance and have fun!
    RadioDiscussions Administrators

DX Videos!


From time to time, I'll shoot some DX video airchecks.. I feed the audio directly from my radio into the phone so its not some windy, echo video held up to the radio. I don't do anything special, just a headphone cord with a 3.5mm male (1/4") plug on each end, one plugs into my Zoom H1 handheld digital recorders headphone jack and the other end plugs into a special adapter that has jacks for a 3.5mm microphone plug and 3.5mm headphone plug that then goes into the USB-C port on my Iphone 15 Pro Max. The ZoomH1 is fed audio from the radio with the same type of cord as mentioned above and it goes from the radio to the line-in input of the Zoom H1.

You'll see alot of that set up and my DX gear in the videos below, which feature my favorite SW radio station. I use a TEF6686 Radio, DXEngineering Preamp, ZM2 Antenna tuner and 15 ft circumference Wellbrook Loop

Below are two videos of Radio Nacional de Amazonias on 11780khz. They operate from a site NW of Brasilia, Brazil with 100kw, beamed at 312 degrees azimuth. I am 250 miles NW of anchorage, 350 miles SE of Nome, some 5000-6000km out of their target zone but a perfect combination of a number of factors lead to delivering this kind of signal to my radio from 11780khz on a regular basis. I have searched far and wide for clips as good as mine, even from within Brazil and haven't come up with any

Recorded Oct 3 at 0122UTC



Oct 4, 2024 at 0107UTC
 
Greetings from Germany.
I recently found a TRIO 9R-59D in my attic. I dusted off the device, unscrewed, cleaned and connected it to a speaker.
The receiver's concept dates back to the sixties and is not transistorized but rather equipped with (miniature) tubes.
After switching it on for the first time, there was an anxious wait to see whether the capacitors would still work, but everything was OK. After warming up, the device was able to make its first sounds after about 25 years of non-use (I didn't test it at the time after buying it on eBay due to time constraints).
Then the old KIWA loop was connected and dozens of stations came in on AM. The S-meter also still works.
However, the reading accuracy is max. 10 kHz. For optimal tuning, the TRIO dial and the frequency adjuster of the antenna must be adjusted synchronously.
With the KIWA feedback amplifier, bandwidths of under 1 kHz can be achieved. Important for long-distance reception (Europe on MW 9 kHz grid, Americas 10 kHz ...)
In the video with the makeshift "Shack" you can hear SER Zaragoza/Spain (AM 873).

However: during the day there was no AM Asia reception and at night AIR Rajkot on 1071 kHz and WBBR Bloomberg New York on 1130 kHz were the only modest results.
There is an all-destroying level of noise and hiss (sometimes even crackling) on the bands, which completely covers up any incoming weak signal.
It's not the TRIO's fault, with the tried and tested 'warhorse' Grundig Satellit 2000 it's no different. Apart from the refrigerator, everything else in the house was turned off, so there were no internal sources of interference.
Probably PowerLAN/PLC, plasma TV, photovoltaics ..... etc. from neighboring buildings are the cause. Of course it's no fun.

The disturbances are just as strong on the ground floor as on the second floor. Even with the “QRM Eliminator” the fog cannot be pushed away.

Unfortunately, the devices three right-hand knobs are no longer original.

trio_9r59d.png


Link : TRIO 9R-59D Video

Vy 73, Gert
 
Last edited:
Status
This thread has been closed due to inactivity. You can create a new thread to discuss this topic.


Back
Top Bottom