Quoting 246tnt(a)gmail.com (246tnt(a)gmail.com):
[...]
(As an aside,
the baluns that Sylvain chose aren't perfect for the US
frequency range, but they should work okay.)
The hi band one if the one recommended for both PCS and DCS.
For the low band it's indeed E-GSM but the graphs are virtually flat,
insertion loss varies by less than 0.5 dB. Return losses are a bit higher
but I doubt that it matters much.
Yes, not "baluns" but "balun". The HHM1523C1 E-GSM side balun is
slightly better in the 900 band. It looks like the HHM1523B3 is
exactly the same balun with the same pin-out except slightly favoring
the GSM-850 range.