4CX250F: Difference between revisions

Latest revision as of 13:37, 30 October 2023

The 4CX250F (7204) (P/N 154-0300-00) is a beam power tetrode vacuum tube designed to operate up to 500 MHz with plate voltage up to 2000 V.

It was originally designed as an RF power amplifier tube for transmitters and requires forced air cooling.

The 4CX250F is the same as the 4CX250B (7203), but with a 26.5 V filament instead of a 6 V filament.

The 4CX250F is used in the sweep circuit of the 519.

@@ Line 1: / Line 1: @@
-The 4CX250F is a beam power tube designed to operate up to 500MHz
+{{Vacuum Tube
-with plate voltage up to 2000V.  It is used in the sweep circuit
+|Type=Tetrode
-of the [[519]].  The 4CX250F is the same as the 4CX250B, but with a 26.5-volt filament instead of a 6-volt filament.
+|Number=4CX250F (7204)
+|EuroNumber=
+|RussianNumber=
+|Part_nos=154-0300-00
+|Description=beam power tetrode
+|Used_in=519;
+|Designers=
+}} designed to operate up to 500 MHz with plate voltage up to 2000 V.
-* [http://w140.com/4cx250f.pdf RCA 4CX250F Datasheet (PDF)]
+It was originally designed as an RF power amplifier tube for transmitters and requires forced air cooling.
-* [http://w140.com/4cx250f.pdf RCA 4CX250B Datasheet (PDF)]
+The 4CX250F is the same as the '''4CX250B''' (7203), but with a 26.5 V filament instead of a 6 V filament.
+==Data sheets==
+* [http://w140.com/4cx250f.pdf RCA 4CX250F Datasheet (PDF)] / [http://w140.com/4cx250b.pdf RCA 4CX250B Datasheet (PDF)]
+* [[tube:4cx250f| 4CX250F]] / [[tube:4cx250b| 4CX250B]] @ radiomuseum.org
+==Used in==
+The 4CX250F  is used in the sweep circuit of the [[519]].
+==Pictures==
+<gallery>
+Eimac 4cx250f 1.jpg|Eimac 4CX250F
+Eimac 4cx250f 2.jpg|Eimac 4CX250F
+Eimac 7203.jpg     |Eimac 7203
+Tek-519_timebase_gen.png|Tek 519 Timebase Circuit using 4CX250F (V331)
+</gallery>
+[[Category:Pentodes]]