Всего 1675 сообщенийСтраницы: 1 2 3 4 5 6 7 8 9 10 [10+] [20+] [30+]

 
 Harald2015-11-05 17:36:00

800 x 534, 28 кБ
The two masts of Horgenzell Mediumwave Transmitter at night.
 
 Harald2015-11-05 17:30:31

800 x 1425, 124 кБ
Guy basement of older mast of Horgenzell Mediumwave Transmitter. The metalic cabinet contains the coils for grounding the upmost guy, which is in opposite to the others not divided by insulators.
 
 Harald2015-11-05 17:24:55

800 x 1200, 148 кБ
Close look at the basement insulator of of older mast of Horgenzell Mediumwave Transmitter
 
 Harald2015-11-05 17:19:48

800 x 450, 58 кБ
Base of older mast of Horgenzell Mediumwave Transmitter with helix building in the background.
 
 Harald2015-11-05 17:15:39

800 x 1200, 72 кБ
Looking up the older mast of Horgenzell Mediumwave Transmitter
 
 Harald2015-11-05 17:11:14

800 x 1200, 51 кБ
The older mast of Horgenzell Mediumwave Transmitter illuminated by the sun
 
 Harald2015-11-05 17:06:55

800 x 1200, 50 кБ
The older of the two masts of Horgenzell Mediumwave Transmitter is used for the realization of the desired radiation diagram. It is situated southwest of the main antenna mast and realizes together with it a radiation diagram with a minimum pointing toward Romania in order to prevent jamming a transmitter there working on the same frequency.
As mentioned, it is also insulated against ground, but in opposite to the newer mast guyed in 3 levels.
Originally all its guys were divided by insulators, but its upmost guys were modified in guys without intermediate insulators grounded through coils at the basement of the guys.
 
 Harald2015-11-05 16:54:25

800 x 450, 60 кБ
Guy basement of main antenna mast of Horgenzell Mediumwave Transmitter with the metalic cabinets containing the coils for grounding the guys.
 
 Harald2015-11-05 16:49:29

800 x 450, 43 кБ
Guy basement of main antenna mast of Horgenzell Mediumwave Transmitter. The metalic cabinets contain the coils for grounding the guys.
 
 Harald2015-11-05 16:44:27

800 x 1200, 155 кБ
Close look at the basement insulator of of main antenna mast of Horgenzell Mediumwave Transmitter
 
 Harald2015-11-05 16:39:16

800 x 450, 52 кБ
Base of main antenna mast of Horgenzell Mediumwave Transmitter with helix building in the background.
 
 Harald2015-11-05 16:34:20

800 x 1200, 60 кБ
Looking up the main antenna mast of Horgenzell Mediumwave Transmitter
 
 Harald2015-11-05 16:30:05

800 x 1200, 48 кБ
The main antenna mast of Horgenzell Mediumwave Transmitter illuminated by the sun
 
 Harald2015-11-05 16:25:19

800 x 1200, 42 кБ
The newer of the two masts of Horgenzell Mediumwave Transmitter is used as main antenna. It is as mentioned insulated against ground and guyed in 2 levels. Its guys are just insulated to the mast and not divided by insulators, which is most common for masts insulated against ground, in order to prevent the flow of radio frequency current through the guys, which reduce antenna effiency and distort the radiation diagram.
This task is done at this mast by coils near the guy basements, over which the guys are grounded.
The advantage of guys grounded by coils respect to guys divided by insulators is that no static charges occur, which require especially at tall masts large insulators and their bridging with overvoltage arrestors, which are difficult to maintain.
 
 Harald2015-11-05 15:58:48

800 x 534, 28 кБ
Closer look at the two masts of Horgenzell Mediumwave Transmitter
 
 Harald2015-11-05 15:54:25

800 x 1200, 53 кБ
Horgenzell Mediumwave Transmitter is a facility near Ravensburg, Baden-Württemberg, Germany for broadcasting the radio program of Deutschlandfunk on 756 kHz with 100 kW. It uses as antenna a directional antenna consisting of two guyed masts insulated against ground with a height of 120 metres, which were built in 1951 and 1978.
 
 Harald2015-10-02 01:09:21

800 x 1200, 116 кБ
A powerline tower carrying two 380 kV-circuits, one 220 kV-circuit and one 110 kV-circuit near Poznan, Poland.
 
 Harald2015-10-02 01:04:01

800 x 534, 44 кБ
Tag of the first pylon of the branching line
 
 Harald2015-10-02 01:00:06

800 x 534, 61 кБ
110 kV-branch north of Gabin, Poland
 
 Harald2015-10-02 00:54:18

800 x 534, 39 кБ
Tag of this strainer
 
 Harald2015-10-02 00:50:05

800 x 1200, 94 кБ
A closer look at this strainer. Note the wire roll.
 
 Harald2015-10-02 00:45:16

800 x 534, 40 кБ
A strainer of a 220 kV-line at Kampinos-Wiejca, Poland
 
 Harald2015-10-02 00:40:33

800 x 1200, 56 кБ
The 289 metres high mast of Solec Kujawski longwave transmitter
 
 Harald2015-10-02 00:34:54

800 x 1200, 44 кБ
The 330 metres high mast of Solec Kujawski longwave transmitter
 
 Harald2015-10-02 00:30:48

800 x 534, 19 кБ
The new Polish longwave transmitter in Solec Kujawski, working on 225 kHz with 1200 kW. It uses an antenna consisting of 2 masts, which are 330 metres respectively 289 metres high. Both masts are grounded and fed through the second topmost guy level with the radio power to be radiated.
 
 Harald2015-10-02 00:26:15

800 x 1200, 155 кБ
For transmitting the radio program from the studio in Warsaw to RCN Konstantynow a directional radio system was used. For it a 76 metres high lattice tower close to the transmitter building was built, which exists still today.
 
 Harald2015-10-02 00:20:24

800 x 1200, 117 кБ
Close to the outmost guy anchor block, there was a small tower with a red lamp on the top in order to mark the span field of the radio mast of RCN Konstantynow at night. As the mast was guyed in three directions, there were 3 such towers.
 
 Harald2015-10-02 00:14:37

800 x 534, 149 кБ
One of the concrete blocks, toward a guy of the 646.4 metres high mast of RCN Konstantynow was fixed
 
 Harald2015-10-02 00:07:24

800 x 1200, 249 кБ
The former helix building of the former 646.4 metres high radio mast of RCN Konstantynow
 
 Harald2015-10-02 00:01:12

800 x 534, 116 кБ
On this basement, there stood until August 8th, 1991, the 646.4 metres high radio mast of RCN Konstantynow - on three insulators, each 2 metres high designed for 120 kV!



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