M441F
| Type | module |
| Category | INPUT-PRE-AMPS |
| Try it | simulator & front panel · download package (zip) |
| Earliest dated evidence | 1972|5 — month & year |
| Evidence | "MAR 20 1972" in PUBLIC/Manuals + tech DOCUMENTS/Modules/M441F/WBS M441F vint P1(1).JPG |
| Confidence | medium |
| All years found | 1972|5 |
| Variants | M441, M441M |
| Folder | Modules/INPUT-PRE-AMPS/M441F |
Connections
What it is made of and what it is part of.
Pinout & connections
No page of its own numbers M441F's contacts: these are its variant M441M's, drawn faded — not confirmed for M441F.
pinout (SVG) · connections (SVG) · pins (JSON)
Pin evidence — 17 contacts
| Pin | Signal | Kind | Confidence | Read from | Source |
|---|---|---|---|---|---|
| A | MIC IN | audio in | variant | rto-144 | M441M.rto144.json, p. 1 |
| 1 | MIC IN | audio in | variant | rto-144 | M441M.rto144.json, p. 1 |
| D | PREAMP OUT | audio out | variant | rto-144 | M441M.rto144.json, p. 1 |
| 4 | PREAMP OUT | audio out | variant | rto-144 | M441M.rto144.json, p. 1 |
| E | LINE IN | audio in | variant | rto-144 | M441M.rto144.json, p. 1 |
| 5 | LINE IN | audio in | variant | rto-144 | M441M.rto144.json, p. 1 |
| J | BOOSTER AMP IN | audio in | variant | rto-144 | M441M.rto144.json, p. 1 |
| 8 | BOOSTER AMP IN | audio in | variant | rto-144 | M441M.rto144.json, p. 1 |
| L | FOLDBACK OUT | audio out | variant | rto-144 | M441M.rto144.json, p. 1 |
| 10 | FOLDBACK OUT | audio out | variant | rto-144 | M441M.rto144.json, p. 1 |
| T | SWITCHED CH ON OUT | control / tally | variant | rto-144 | M441M.rto144.json, p. 1 |
| 16 | SWITCHED CH ON OUT | control / tally | variant | rto-144 | M441M.rto144.json, p. 1 |
| V | COMMON | ground / common | variant | rto-144 | M441M.rto144.json, p. 1 |
| 19 | CHASSIS | ground / common | variant | rto-144 | M441M.rto144.json, p. 1 |
| 20 | +24 V | power rail | variant | rto-144 | M441M.rto144.json, p. 1 |
| Y | COMMON | ground / common | variant | rto-144 | M441M.rto144.json, p. 1 |
| 22 | +48 V | power rail | variant | rto-144 | M441M.rto144.json, p. 1 |
Pictures
1972 - M441F - vint P1.jpg
1972 - M441F - 181-06-003.jpg
1972 - M441F - 441-04-007.jpg
Dates found in the documents
| Year | Kind | Text | File |
|---|---|---|---|
| 1972|5 | month & year | MAR 20 1972 |
1972 - M441F - vint P1.jpg |
Physical manual inventory
| Item | Location | Status | Scanned |
|---|---|---|---|
| M441F | Recently scanned and stiched by WB |
Photos & scans (3)
| Year | File | |
|---|---|---|
| 1972|5 | 1972 - M441F - 181-06-003.jpg | note |
| 1972|5 | 1972 - M441F - 441-04-007.jpg | note |
| 1972|5 | 1972 - M441F - vint P1.jpg | note |
Named in other drawings & documents (1)
| File | Page |
|---|---|
| 19xx - RTO-144 - Module RTO-144 Jumper calculator.xlsx | 1 |
Drawings (2)
Each scan with its trace laid over it: the slider runs from the scan to the vector drawing. Click one to see it large and save it as SVG, DXF, KiCad, PDF or PowerPoint.
1972 - M441F - 181-06-003viewer
1972 - M441F - 441-04-007viewer
Read from the drawing title blocks.
| Drawing | Title | Date | Drawn by | Checked by | Iss. | Source |
|---|---|---|---|---|---|---|
| 181-06-003 | file | |||||
| 441-04-007 | file |