| Brand | HP |
|---|---|
| Type | RF Signal Generator |
| Model | 8640B |
| MPN | 8640B |
| Country of Origin | United States |
Check the listing for details. HP 8640B -A11 Module, w/knobs (Variable Freq Modulation), opt 001, FULLY TESTED!. Condition: Used, Made in United States. Listed at 79.00 USD. We own/operate the HP8640B domain in addition to our regular web site. This sale includes the knobs shown in the photos. The legends are not perfect, but still very readable. If you don't have this option on you 8640B all you need to do is to remove the standard board and plug this board in.