For the VNA you need a second calibration kit, to get a second 50 Ohm load and barrel connector to do the ISOLATION step of the calibration process -- for S21 type tests. Amazon has inexpensive kits.?
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For the SA you need a handful of attenuators. The one you put first in line at the radio's antenna port is the most important. It must be able to dissipate the max power you expect to test. If you have only HTs to test (10W max power) that first attenuator is inexpensive. If you need to test at 50W, expect to pay much more...
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Personally all my attenuators are multiples of 10dB because their effect is easy to calculate -- divide by 10... E.g. 5W thru 10dB = 0.5W, thru 20dB = 0.05W etc...?
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Most here recommend a total of 60dB for a 1-5W input. I like 80dB... Don't be afraid to experiment?
