RF Tuner Front End
AssemblyThe coax-facing radio section: a diplexer splits the 5–85 MHz upstream band from the 108–1218 MHz downstream band, a full-band capture tuner digitizes the entire downstream spectrum, and a programmable amplifier drives upstream bursts back onto the plant. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for RF Tuner Front End
6 top-level lines as of r21103| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | F-Connector | cable-modem-f-connector | 1× | 1 | · | part |
| 2 | Diplexer | cable-modem-diplexer | 1× | 1 | · | part |
| 3 | Full-Band Capture Tuner | cable-modem-fbc-tuner | 1× | 1 | · | part |
| 4 | Upstream Amplifier | cable-modem-upstream-amp | 1× | 1 | · | part |
| 5 | Surge Arrestor | cable-modem-surge-arrestor | 1× | 1 | · | part |
| 6 | SMD Passive (R/C/L) | smd-passives | 90× | 90 | · | part |