RCA 21B042 - Revision history

Arclight-MCP-Bot: Removed broken CRT Database link (404 Not Found) (via update-page on MediaWiki MCP Server)

2026-01-24T18:53:42Z

Removed broken CRT Database link (404 Not Found) (via update-page on MediaWiki MCP Server)

← Older revision		Revision as of 18:53, 24 January 2026
Line 66:		Line 66:
	== Related Models ==		== Related Models ==
	* [[RCA 14B042]] - 14" version		* [[RCA 14B042]] - 14" version

	~~== Archival Links ==~~
	~~{{CRT link~~
	~~\|link_type=Database~~
	~~\|link_source=CRT Database~~
	~~\|link_url=https://crtdatabase.com/crts/rca/rca-21b042~~
	}}

	[[Category:RCA CRTs]]		[[Category:RCA CRTs]]
	[[Category:21-inch CRTs]]		[[Category:21-inch CRTs]]

Arclight-MCP-Bot: Converted to standard CRT model template format, fixed input signal/connector values to match form categories (via update-page on MediaWiki MCP Server)

2026-01-10T16:48:42Z

Converted to standard CRT model template format, fixed input signal/connector values to match form categories (via update-page on MediaWiki MCP Server)

Show changes

Arclight-MCP-Bot: Added ManualsLib link (via update-page on MediaWiki MCP Server)

2026-01-08T09:29:17Z

Added ManualsLib link (via update-page on MediaWiki MCP Server)

← Older revision		Revision as of 09:29, 8 January 2026
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	\|location=side		\|location=side
	\|notes=Headphone output		\|notes=Headphone output
			}}
			{{CRT link
			\|link_type=Retailer
			\|link_source=ManualsLib
			\|link_url=https://www.manualslib.com/manual/887714/Rca-14b042.html
	}}		}}

Arclight-MCP-Bot: Creating page for RCA 21B042 CRT television based on user manual (via create-page on MediaWiki MCP Server)

2026-01-08T09:25:22Z

Creating page for RCA 21B042 CRT television based on user manual (via create-page on MediaWiki MCP Server)

New page

{{CRT model
|brand=RCA
|oem=
|model_code=21B042
|crt_type=TV
|image_main=
|images=
|model_3d=
|screen_size_in=21
|aspect_ratio=4:3
|tvl=
|height=18.5 in
|width=23.2 in
|depth=17.9 in
|weight=48.7 lbs
|tube_type=
|chassis=
|remote_control=
|tube=
|standards_semantic=NTSC
}}
{{CRT input
|signal=Composite
|connector=RCA
|count=1
|sync=
|location=rear
|notes=Video Input
}}
{{CRT input
|signal=Audio
|connector=RCA
|count=1
|sync=
|location=rear
|notes=Audio Input (Mono)
}}
{{CRT input
|signal=Composite
|connector=RCA
|count=1
|sync=
|location=side
|notes=Side Video Input (AV2)
}}
{{CRT input
|signal=Audio
|connector=RCA
|count=1
|sync=
|location=side
|notes=Side Audio Input (AV2) (Mono)
}}
{{CRT input
|signal=RF
|connector=F
|count=1
|sync=
|location=rear
|notes=Antenna/CATV input, 181 channel tuner (VHF 2-13, UHF 14-69, CATV 1-125)
}}
{{CRT input
|signal=Audio
|connector=3.5mm
|count=1
|sync=
|location=side
|notes=Headphone output
}}

==Overview==
The RCA 21B042 is a 21-inch CRT television manufactured by RCA. It features a traditional 4:3 aspect ratio display and supports NTSC standard definition video. Unlike its smaller 14B042 sibling, this model includes additional connectivity options including AV outputs and a headphone jack.

==Specifications==
* '''Display:''' 21" CRT (measured diagonally)
* '''Color System:''' NTSC
* '''Power:''' 90-140V AC, 50Hz/60Hz @ 80 watts
* '''Audio Output:''' 2x2 Watts
* '''Speaker:''' 18 ohm/7W
* '''Tuner:''' 181 Channel Quartz PLL Frequency Synthesized
* '''Remote Control:''' 24 Button remote with 2 x AAA batteries

==Features==
* 181-channel tuner supporting VHF (2-13), UHF (14-69), and CATV (1-125) channels
* On-screen menu system
* Sleep timer
* Closed captioning support
* Parental controls (V-Chip)
* Front panel controls
* Mono audio system
* Headphone output
* AV outputs for recording or daisy-chaining

==Connections==
* 1x RF input (F-connector) for antenna/cable
* 2x Composite video inputs (1 rear, 1 side)
* 2x Audio inputs (1 rear, 1 side, both mono)
* 1x Composite video output (rear)
* 1x Audio output (rear, mono)
* 1x Headphone output (3.5mm jack, side)

Note: The side AV jacks (AV2) cannot be used simultaneously with the rear AV jacks.

==Known Issues==
* Susceptible to permanent image burn-in from static images (video games, logos, etc.)
* Side and rear AV inputs cannot be used simultaneously

==Service Information==
* Service manual reference: TOCOM 1640641B

[[Category:CRT models]]
[[Category:RCA CRT models]]
[[Category:21 inch CRTs]]
[[Category:4:3 CRTs]]
[[Category:NTSC CRTs]]