I think it unlikely you will find any spare modules for this receiver, however the

fault you explain may be down to what version of Module B you have fitted and

may be an easy fix!

In it's simplest form Module B contains just a single Low Pass Filter (LPF), which

in itself is not the cause of any problems. A Sub-octave filter was an option for Module B

and consists of several filters switched by Module H, but uses DIL reed relays to switch

signal paths within Module B. A design flaw in this module see's low level RF signals trying to

pass through these reed relays contacts without the help of a "dc wetting" current.

Over time these relays either go faulty or contacts go HR due to possible oxidisation of the contacts

and obstruct the RF signals on their way to the 1st RF Amp stages. Solution is either to bypass the relays

or change them for new ones (although there are about 20 of them in total from memory). First however you

need to establish that this module is the source of the problems.

Icom had the same issue with an 80's transceiver the 720A. It used a rather noisy rotary relay arrangement

to switch TX/Rx filters, the contacts used were exposed and so after time they became oxidised and the

receive section would go deaf. A blip on the TX PTT button would then restore receive as the TX power would

effectively break down the HR contact. A modification was devised and introduced a "dc wetting" current into

circuit which solved the problem, however it did nothing to reduce the loud clanking of the rotary relay!.

The easiest way to diagnose the 2282 fault is to just connect your aerial to the RF input of Module A, if the

Sub-octave filter is at fault the receiver should work OK. You don't really need the Sub-octave filter module

and you would be hard pressed to notice any difference in receive performance if you did not use it. I believe

these types of filters were installed when the receiver would be co-located with high power transmitters on the same

site. The Eddystone 1650 has a similar option, however this set uses a motor driven capacitor to do the fine

tuning of the Sub-octave filters when they are selected. 1650's used on the old Post Office/BT coastal radio statons

generally had these installed.

If it's not this module then you need to check the status leds on the back of the modules, they should all

be on. I notice a recent sale of a 2282A on ebay had a fault indicated and the status LED on Module E was

extinguised. These modules are impossible to work on when installed into the receiver mainframe and you would

need a board extension arrangement on which to work on the module outside of the receiver. I have several 2282's

here and have recently acquired connectors, cables and PCB's to construct this "outrigger". I'll get around to doing it

one day.

Anyway Claudio, hope this helps a little and apologies in advance to the group for discussing a Plessey receiver on

what is a Racal forum.

I'm not an expert on the 2282 Claudio, but if I can be of any further help please let me know.

You should be able to find a diagram on the net for Module B, It's not of the greatest definition but will give you

some idea about how it works.

cheers

Bob

G8GBM