The IB says:
''The AM transmitters are configured for a specific frequency when shipped from the factory. The transmitter is equipped with several frequency dependent parts and circuits. Due to the frequency dependent parts, frequency dependent circuits, and specialized procedures, the transmitter cannot be reprogrammed for a different frequency in the field. If the transmitter is required to be programmed for a different frequency, contact the Broadcast Electronics Customer Service department. ''
They sell frequency kits for the band in many segments, but not having a schematic I'm not 100% sure any of those parts in the specialized kits are in the PA module(s). My foggy brain says they are not, but you may have to confirm with the factory to be assured they work.
Jim "Turbo" Turvaville
SBE Certified Radio Engineer
Turbo Technical Services
From: Gregg Richwine <email@example.com>
To: "firstname.lastname@example.org" <email@example.com>
Sent: Wednesday, March 7, 2018 11:18 AM
Subject: [CRTech] Re: are BE AM 5KW modules FD?
In the back of my mind I recall a mention of some broad frequency-dependent parts. I'd touch base with the factory...you might need to send the module in to be tweaked.
From: Timothy Zook <firstname.lastname@example.org>
Sent: Wednesday, March 7, 2018 8:41 AM
Subject: [CRTech] are BE AM 5KW modules FD?
HI everyone, are the RF modules in a 5KW BE AM transmitter frequency dependent? I would like to take modules from a BE transmitter on 1060 kHz and put them in a 1370 KHz transmitter. I don't know the module number but I don't remember the model number ever changing.
Tim Zook, Broadcast Services Department Technician
+1 574.970.4252 Ext. 236
Technology for abundant life!