Just the same as the now redundant stick microphones on the 317's, twisted and bent any which way just to get it tucked out the way lolAnd they are getting twisted and bent into many many shapes. Ridiculous and unnecessary type of microphone.
No idea about a train radio. But at sea, on a VHF radio you turn the squelch down till the interference comes through, then slowly turn till it stops then give it little extra. As to what it actually is I haven't a clue!
No idea about a train radio. But at sea, on a VHF radio you turn the squelch down till the interference comes through, then slowly turn till it stops then give it little extra. As to what it actually is I haven't a clue!
I believe in those two cases, the squelch is adjusting the sensitivity to the received signal, filtering out the noise from the radio signal.Just the same with CB radio, if you wanted a private conversation on a busy channel but were reasonably close, you could adjust the squelch so it appeared to be private. It wasn't, of course. but you couldn't hear the other (angry) persons trying to use the folks trying use the same channel.....
Was so much less complicated making announcements via one for all handset on the desk.I believe in those two cases, the squelch is adjusting the sensitivity to the received signal, filtering out the noise from the radio signal.
In the case of the 745 microphones, and squelch in an aviation intercom setting (which is why I'm used to), you're adjusting the noise filtering on the microphone input. Here you turn the squelch up until the intercom stops sending white noise into everybody's ears, then try speaking to make sure you haven't gone too far. When it's set right it will automatically transmit when you speak and then shut off when you stop speaking.
If you turn it up too far, your speech will chop in and out in a similar way to the announcements on these trains.
Just out of interest... is the talk back function (for communicating with the guard or responding to the passcom) also conducted via the stick microphone? Or is there a handset for that?Was so much less complicated making announcements via one for all handset on the desk.
I believe in those two cases, the squelch is adjusting the sensitivity to the received signal, filtering out the noise from the radio signal.
In the case of the 745 microphones, and squelch in an aviation intercom setting (which is why I'm used to), you're adjusting the noise filtering on the microphone input. Here you turn the squelch up until the intercom stops sending white noise into everybody's ears, then try speaking to make sure you haven't gone too far. When it's set right it will automatically transmit when you speak and then shut off when you stop speaking.
If you turn it up too far, your speech will chop in and out in a similar way to the announcements on these trains.
Its everything except GSMR which mercifully still has a trusty handset.Just out of interest... is the talk back function (for communicating with the guard or responding to the passcom) also conducted via the stick microphone? Or is there a handset for that?
Oh dear... does this mean that the audio from the passcom/guard's handset is just played through a speaker in the cab?Its everything except GSMR which mercifully still has a trusty handset.
Was 103 & 106 but the latter later swapped with 108. Never know whether to put 745/1 stuff in this thread as it states Intercity.The 2 745's being used on Stansted Express today are listed as train formations on journey check on the GA website.
Was 103 & 106 but the latter later swapped with 108. Never know whether to put 745/1 stuff in this thread as it states Intercity.
Yeah its just it says Intercity and get picked up a lot on here for putting stuff in the wrong thread Haha. Also only seat back tables fitted.Please do continue, the 745/1 will be used on the London - Norwich services anyway & they are not regional emus, just lacking 1st class seating. (& catering facilities, just in case someone needs to correct me........)
I don't think a separate thread for the StanEx units is warranted - as said above, they're used interchangeably.Perhaps the mods could remove the (Intercity trains) bit from the title? Or perhaps make a separate Stansted Express thread?
This pdf claims 722 (which I guess includes the 45 tip-up seats?) - but that was generated around order time, and specs might have changed:Does anyone have a seating plan or seating capacity numbers for the Stansted units? I gather there are more luggage racks/bike spaces than the intercity units.
This pdf claims 722 (which I guess includes the 45 tip-up seats?) - but that was generated around order time, and specs might have changed:
754/0 has 2 coaches of first class and 10 coaches of standard. Standard has a decent number of table bays and seat back tables on all other seats. There is a buffet bar between first and standard class.An article I read seemed to infer that the 745/1 would not have first class seats, as opposed to the 745/0. Does anyone know the breakdown between the two types, regarding first and second?
I read that tweet as saying as 108 failed as well.
So if I'm understanding that right, they are failing almost 12× more often than what the replaced?Early days yet but 745s are still averaging around 4000 MTIN vs around 50k-55k on the stock they replaced. 10 units for 9 diagrams will certainly be far too many based on current performance, once the timetable reverts to normal. I suspect it'll be a while before that happens, so hopefully between now and then the reliability will improve. No sign of improvement on the diesel units any time soon, we can only hope the electric only units will do better eventually.