Here's what I can contribute at this time. Hope it helps.
7100 portable radios, partial list:
Some model numbers I've definitely encountered:
RU101219V61 R1B
RU101219V62 R1A
RU101219V31 R1A
RU101219V33 R1B
Correlated to specific info per the manuals, as best as I can manage right now:
800 MHz models, I/Q modulation types
P7130IP, select model, 64B- E, HT7130E81E
P7150IP, scan model, 64B-E, HT7150S81E
P7170IP, system model, 64B-E, HT7170T81E
P7130IP select model, HT7130E81X, 800 MHz model, RU101219V33 R1B (confirmed)
P7150IP scan model, HT7150S81X, 800 MHz model, RU101219V31 R1A (confirmed)
P7170IP system model, HT7170T81X, 800 MHz model,
P7130IP select model, 256-B, HT7130E81A (Direct FM model)
P7150IP scan model, 256-B, HT7150S81A (Direct FM model)
P7170IP system model, 256-B, HT7170T81A (Direct FM model)
VHF models:
P7130IP, select model, HT7130EH1X
P7150IP, scan model, HT7150SH1X
P7170IP, system model, HT7170TH1X
P7130IP select model, 64B-E, HT7130EH1E
P7150IP scan model, 64B-E HT7150SH1E
P71710IP system model, 64B-E HT7170TH1E
P7150IP scan model, 256B-E HT7150SH1A
P71710IP system model, 256B-E HT7170TH1A
UHF models: (All are direct FM)
378-430 MHz range:
P7130IP select model, MAHT-EN1XZ
P7150IP scan model, HT7150SN1X RU101219V61 (confirmed)
P7170IP system model, HT7170TN1X RU101219V62 rev B (confirmed)
P7130IP, select model, 64B-E, MAHT-EN1XE
P7150IP, scan model, 64B-E, HT7150SN1E
P7170IP, system model, 64B-E, HT7170TN1E RU101219V62 R1A (confirmed)
P7130IP select model, 256-B, MAHT-EN1XA
P7150IP scan model, 256-B, HT7150SN1A
P7170IP system model, 256-B, HT7170TN1A RU101219V62 rev B (confirmed)
UHF 450-512 range:
P7150IP, scan model, HT7150SU1X
P7170IP, system model, HT7170TU1X
P7150IP, scan model, 64B-E, HT7150SU1E
P7170IP, system model, 64B-E, HT7170TU1E
P7150IP scan model, 256-B, HT7150SU1A
P7170IP system model, 256-B, HT7170TU1A
And an oddball, I don't know which band it is, even:
Model MAHM-S8DXX RU101219V171 rev C Possibly a UHF low split version.
My information is obviously incomplete, but any line marked with CONFIRMED at the end of it is definitely correct. Combination number cross referenced to model number.
I suggest you save a copy of this (it might even warrant a tack) and make additions to
it as you can.
Elroy