Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- en:dr-48 [2021/05/11 21:39] – angelegt mb
+++ en:dr-48 [2021/05/12 19:41] (aktuell) – mb
@@ Zeile 7: / Zeile 7: @@
 ==== Variants ====
   * **DR-48 / RF-4800 LBS**, European version: red LED display, active only in the SW ranges; long wave (two ferrite antennas), FM 87.5 -108 MHz
-  * RF-4800**, USA version: red LED display, active in SW ranges only; no long wave (one ferrite antenna only), FM 87.5 -108 MHz
+  * **RF-4800**, USA version: red LED display, active in SW ranges only; no long wave (one ferrite antenna only), FM 87.5 -108 MHz
-  **Proceed 4800**, Japan version: red LED display, active in SW ranges only; no long wave, FM 76 - 90 MHz
+  * **Proceed 4800**, Japan version: red LED display, active in SW ranges only; no long wave, FM 76 - 90 MHz
 {{:images:panasonic-rf4800.jpg?600|National Panasonic DR-48 / RF-4800}}
@@ Zeile 35: / Zeile 35: @@
 The Panasonic [[RF-4800]] was marketed in Europe as the DR-48, which also covers the longwave range.
-At 48 x 20 x 35.5 cm (wxhxt) and 8 kg, the landscape-format station receiver is one of the large and only theoretically portable sets. Two handles at the front of the black lacquered sheet-steel housing provide a certain mechanical protection for the operating elements. In addition to a mains input that can be switched from 110 to 220 V, the RF-4900 also has a 12V car battery connector and its two battery compartments hold 8 [[UM-1]] batteries.
+At 48 x 20 x 35.5 cm (wxhxt) and 8 kg, the landscape-format station receiver is one of the large and only theoretically portable sets. Two handles at the front of the black lacquered sheet-steel cabinet provide a certain mechanical protection for the operating elements. In addition to a mains input that can be switched from 110 to 220 V, the RF-4800 also has a 12V car battery connector and its two battery compartments hold 8 [[UM-1]] batteries.
 On the left of the **front panel** is the large loudspeaker, below it the mains switch and the 3.5 mm jack sockets for an external speaker and the tape line out. To the right are the rotary controls for volume, bass and treble and the BFO control.
@@ Zeile 53: / Zeile 53: @@
 During warm-up, the receiver shows a certain drift, which is especially noticeable in SSB reception. The receiver slowly moves from a tuned frequency, a phenomenon which no longer occurs with the more modern receiver concepts with PLL circuitry.
-The edge steepness or skirt selectivity of the IF filters used cannot keep up with the filters of more modern sets; accordingly, interference whistling often occurs.
+The filter skirts of the IF filters used cannot keep up with the filters of modern sets; accordingly, interference whistling often occurs.
 Due to the single conversion principle, mirror signals can occur at frequencies below 3 MHz. Since the internal ferrite antennas cannot be switched off on LW and MW, the DR-48 is not a great medium-wave DX receiver.
-In summary, the DR-48 / [[RF-4800]] as a tabletop receiver corresponds to the state of the art in the early 1980s, the receiver has no special highlights such as outstanding stability, steep-edged filters, suitability for portable use.
+In summary, the DR-48 / [[RF-4800]] as a tabletop receiver was a state of the art set in the early 1980s, the receiver has no special highlights such as outstanding stability, steep-edged filters, suitability for portable use.
-For the reliable performer, the original catalogue price was too high. At a reasonable price, the Panasonic can still serve the newcomer to shortwave reception well and is an impressive receiver forty years after its market launch.
+For the reliable performer, the original catalogue price was too high. At a reasonable price, the Panasonic can still serve the newcomer to shortwave reception well and is still an impressive receiver forty years after its market launch.
 ===== Technical principle =====