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en:e-652 [2019/04/09 22:08] (aktuell)
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 +====== E-652: Rohde & Schwarz ET-001 / ESM-2 ======
 +**E-652**, [[VHF]] / [[UHF]] receiving equipment **Rohde & Schwarz ET-001** with the receiver **ESM-2**; developed and produced by [[Rohde Schwarz|Rohde & Schwarz, Munich]].
  
 +The [[VHF]] / [[UHF]] receiving system ET-001 from [[Rohde & Schwarz]] was not only part of the [[P-728]] VHF direction finding system, but also used separately as a monitoring receiver with army designation **E-652**. ​
 +
 +{{:​images:​p-728-e-652-et001.jpg?​direct&​400 |P-728: Empfänger ESM2}}
 +===== Technical Data =====
 +  * [[Principle]]:​ [[Double conversion]];​ [[IF]] 199,3 or 339,3 MHz; 10,7 MHz
 +  * [[Modes]]: [[A1]], [[A3|AM (A3)]], [[F3|FM (F3)]]
 +  * [[Frequency range]]: 25 - 1000 MHz
 +  * **Analog dial**, optional digital **frequency controller EZK**: digital display 1 kHz
 +  * [[Sensitivity]]:​ [[A3|AM (A3)]] 1 - 2 μV / [[Selectivity]] -3 dB: 15, 30, 250 kHz; 1 MHz
 +
 +==== Power Supply ====
 +  * [[Mains]]: 220 V AC
 +
 +==== Dimensions ====
 +  * 560 x 358 x 216 mm; 28 kg
 +
 +==== Accessories ====
 +  * **Frequency controller EZK**: digital frequency display 1 kHz
 +  * **Panoramic display EZP**
 +
 +----
 +
 +===== Operation =====
 +The [[VHF]] / [[UHF]] receiver system Rohde & Schwarz ET001 carried the Swiss Army designation E-652 when used as monitoring receiver.
 +
 +{{:​images:​e-652-rohde-schwarz-esm2-front.jpg?​400 |P-728: Empfänger ESM2}} The VHF-UHF receiver **ESM2** covers 25 - 1000 MHz in nine band segments, it has an analog dial with a conventional tuning knob, reception modes [[AM]], [[FM]] and PULS are selectable. The IF bandwidths are 15, 30, 250 kHz and 1 MHz, the receiver has several AGC and MGC options.
 +
 +The frequency can also be controlled with the frequency controller **EZK** with an up / down tuning switch featuring different tuning speeds; the digital frequency display with a resolution of 1 kHz is part of the frequency controller. The receiver can be controlled alternatively via TTL signals with BCD code or in master-slave mode from another receiver.
 +
 +{{:​images:​e-652-rohde-schwarz-ezp-front.jpg?​400 |P-728: Sichtgerät EZP}}  In the panoramic display **EZP**, a smaller or wider frequency range at the level of the second IF of 10.7 MHz can be displayed.
 +
 +
 +===== Technical Principle =====
 +
 +==== Semiconductors ====
 +The set is completely solid state.
 +
 +==== Development ====
 +
 +==== Field use ====
 +The [[VHF]] / [[UHF]] receiving system ET-001 from [[Rohde & Schwarz]] was not only part of the [[P-728]] VHF direction finding system, but also used separately as a monitoring receiver with army designation **E-652**.
 +
 +{{gallery>:​images?​p-728-e-652*.jpg&​0&​80x80&​lightbox&​showtitle&​titlesort}}
 +
 +==== Manuals ====
 +
 +==== Additional information ====
 +  * [[http://​armyradio.ch/​radio-d/​p-728.htm|P-728 auf www.armyradio.ch]]
 +  * [[http://​www.radiomuseum.org/​r/​rohde_vhf_uhf_empfaenger_esm_2e.html|Receiver ESM 2 on www.radiomuseum.org]]
en/e-652.txt · Zuletzt geändert: 2019/04/09 22:08 von mb