I just did that for an 'unofficial' check on a non-151(c) array following some damage repair. Unfortunately I did not have anything to compare it to but it did read the loops at about what I expected given the line lengths.
By the way, the issue with mine that I forgot to report here (sorry about that) turned out to be a combination of the RF connector starting to get flakey and this unit's rather high sensitivity to reactance in calibration loads. Be 100% sure that whatever you use to calibrate it has as close to zero reactance over the frequencies of interest as possible. As little as +j5 in the AM band will cause the symptoms I observed. I suggested adding a test to the calibration routines to detect this condition but it fell on deaf ears so beware of your calibration devices if you see odd behavior like I did.