You can use your MFJ-269c for more than just an SWR analyzer. There are multiple things this unit can be used for. Here is using it to test coax for faults, and getting the length of various runs of coax. Did you buy an unknown amount of coax at hamfest? Do you have a fault somewhere in 300 feet, and having a hard time finding it? You will see how i saved 45 feet of LMR400 here.
Source: QRZ News
Link: Testing coax cable faults with the MFJ-269c