There is a SW version of the BBC transmitter pictured still playing at the Greenville,NC transmitter plant.It runs at 250kw instead of 500.Uses a 650 tetrode.The transmitter uses the same PSM MODULARWmange to keep the modulator amp modules still going despite difficulty in getting some of the parts.
I used to listen to Option Musique on AM from Scotland UK at night in the winter months, now I listen to that station at any time of the year or during the day on the Internet or my Computer, Smartphone or Wi Fi Radio.
It's good to see that some people appreciate old AM transmitters when they are retired. As I don't speak the language, where was it situated? I would guess Germany or Switzerland?
And that was seven years ago! Thanks to the Internet, in 2018 shortwave stations are falling silent left and right. My shortwave listening hobby is rapidly disappearing. In a few more years, no shortwave broadcasters will remain at all. Even the religious stations will eventually fall silent. Shortwave broadcasting, as we have known it, will cease to exist. Local AM & FM broadcasters will be next. :'(
Very interesting Willi! Thank you for sharing it with CZcams fans. Do you welcome new members to your group? (I live in England). I remember seeing the 198kHz transmitter at Droitwich (Whychbold) before it was modernised. Best wishes from Rob (former Editor of Practical Wireless magazine.
Hello Rob. I try to answer you in English with the help of Google Translater. Thank you for your comment. Of course you are welcome as a new subscriber to my channel. At that time I happened to be present at this tour. That my short film has found such appeal surprised me. Unfortunately, it is a fact that more and more ancient cultural assets are disappearing. From this point of view, such videos keep memories alive to a bygone era. Best regards to England.
+Robbie68K: You are correct! I looked up the tube data. The updated version, CQK650-2, is a liquid-cooled tetrode. The filament is rated for 11 volts AC at 1,700 amperes. As it is being run on a three-phase, 50-Hz primary supply, this rating might be slightly higher if operated at 60 Hz. I'm not sure of the screen grid's purpose, except perhaps to keep high-voltage DC off of the cathode. I don't think the tube has a beam-forming plate; I didn't see anything about that in the tube data anyway. According to Radiomuseum.org tube data, at 11 VAC and 1,700 amps (if my math is correct!) this tube's RF power rating is 18.7 kW. I noticed on one of the data placards that the tube had a high DC voltage on the anode. This indicates the transmitter in which this tube was/is used is plate modulated. I imagine there would be somewhere around 15 kVDC on the plate, along with whatever RF is present when the tube is oscillating. Was this tube used in the modulator? 18.7 kW RF doesn't seem nearly high enough to produce the very high power this transmitter is producing. Are there more of these tubes in a power amplifier somewhere? Or do they tune the antennae to increase final RF power capacitively and/or inductively through an RF transformer? 73 de NØJAA.
Hallo Zeitgenosse. Dein Urteil und die wohlriechenden Beigaben freuen mich ganz besonders. Es zeigt wie wenig es braucht, um auch hochbegabten Kindern etwas Abwechslung in ihrem stressigen Alltag zu gönnen.
Liebe auch die alte Technik und Geräte
There is a SW version of the BBC transmitter pictured still playing at the Greenville,NC transmitter plant.It runs at 250kw instead of 500.Uses a 650 tetrode.The transmitter uses the same PSM MODULARWmange to keep the modulator amp modules still going despite difficulty in getting some of the parts.
Schade, dass die Mittelwellensender in Deutschland abgeschalten wurden.
I used to listen to Option Musique on AM from Scotland UK at night in the winter months, now I listen to that station at any time of the year or during the day on the Internet or my Computer, Smartphone or Wi Fi Radio.
It's good to see that some people appreciate old AM transmitters when they are retired.
As I don't speak the language, where was it situated? I would guess Germany or Switzerland?
Hi, Sottens is a village in the french part of Switzerland. ;)
Today is the first time without Option Musique on AM. Now, I am very sad : (( I am a listener from Belgium... RIP...
And that was seven years ago! Thanks to the Internet, in 2018 shortwave stations are falling silent left and right. My shortwave listening hobby is rapidly disappearing. In a few more years, no shortwave broadcasters will remain at all. Even the religious stations will eventually fall silent. Shortwave broadcasting, as we have known it, will cease to exist. Local AM & FM broadcasters will be next. :'(
Super Video. Danke sehr. Look at that tube: 14.400 Watt filament power at 12V. Lovely.
Ich war auch ein Horer von Sottens Option Musique auf MW,ich horte Sottens am Abend von Frankreich
Very interesting Willi! Thank you for sharing it with CZcams fans. Do you welcome new members to your group? (I live in England). I remember seeing the 198kHz transmitter at Droitwich (Whychbold) before it was modernised. Best wishes from Rob (former Editor of Practical Wireless magazine.
Hello Rob. I try to answer you in English with the help of Google Translater. Thank you for your comment. Of course you are welcome as a new subscriber to my channel. At that time I happened to be present at this tour. That my short film has found such appeal surprised me. Unfortunately, it is a fact that more and more ancient cultural assets are disappearing. From this point of view, such videos keep memories alive to a bygone era. Best regards to England.
Nice!
Triode (6:16)? Afaik a CQK650 is a tetrode.
@Yipyap Switzerland
+Robbie68K: You are correct! I looked up the tube data. The updated version, CQK650-2, is a liquid-cooled tetrode. The filament is rated for 11 volts AC at 1,700 amperes. As it is being run on a three-phase, 50-Hz primary supply, this rating might be slightly higher if operated at 60 Hz. I'm not sure of the screen grid's purpose, except perhaps to keep high-voltage DC off of the cathode. I don't think the tube has a beam-forming plate; I didn't see anything about that in the tube data anyway.
According to Radiomuseum.org tube data, at 11 VAC and 1,700 amps (if my math is correct!) this tube's RF power rating is 18.7 kW.
I noticed on one of the data placards that the tube had a high DC voltage on the anode. This indicates the transmitter in which this tube was/is used is plate modulated. I imagine there would be somewhere around 15 kVDC on the plate, along with whatever RF is present when the tube is oscillating.
Was this tube used in the modulator? 18.7 kW RF doesn't seem nearly high enough to produce the very high power this transmitter is producing. Are there more of these tubes in a power amplifier somewhere? Or do they tune the antennae to increase final RF power capacitively and/or inductively through an RF transformer?
73 de NØJAA.
Shes leaking
POS
Tolles Video - leider ohne Kommentare oder Untertitel völlig unbrauchbar für einen Erkenntnisgewinn. Nur für echte Freaks.
Bombastische Musik im "Ami-Style" für einen aufgeblasenen Langweiler-Furz!! 💩💩💩
meine Antwort: siehe oben ;-))
Bombastische Musik im "Ami-Style" für einen aufgeblasenen Langweiler-Furz!! 💩💩💩
Hallo Zeitgenosse. Dein Urteil und die wohlriechenden Beigaben freuen mich ganz besonders. Es zeigt wie wenig es braucht, um auch hochbegabten Kindern etwas Abwechslung in ihrem stressigen Alltag zu gönnen.