DFR Telecoms Diary
1 January :
9 January : Sam, Martin, Ray, Charles, Peter and I were in. We spent the day starting on the big clean up of the caboosh. We have quite a pile of gear that will go to the next THG swapmeet in April. Peter and Ray checked out a Panasonic PABX which we think is going to the railway at Blaenavon.
16 January : Discussions were held about moving line plant recording from John to Martin, fault logging and lineside visit recording. I spent my day jumpering up three of the new relay sets, the transformer bridge circuit for Parkend North, followed by the two low back emf repeaters in the asterisk incoming circuits. They all worked though I did have a minor fault on one relay set where a resistor was touching the earthed frame. . Ray went over the clock circuitry with Sam. Peter and Martin had a look at the cabling in the main building Severn and Wye room. Sam and Peter carried on with altering the bench in our office in preparation for the move of the data cabinet to the corner.
19 January : I went in to reinstall the two first selectors. One had a fault which turned out to be a dis wire caused by me tugging on the U points when I pulled them out of the frame. They are both now working. I took number 4 home to demodify. I expect this one to be much more difficult as it has been more extensively modified. I came back to see Sam at Norchard. He and Roger want me to move an auto auto with regenerator relay set from Parkend to Norchard but I am pretty sure that it does not exist. It was discussed but never built. I have the relay can and regenerator at home available for the build. It's probably a good idea for both Norchard to Asterisk junctions to have regenerators as this will clean up any dial pulses from faulty dials. No chance of doing this at Parkend also, but I guess that all calls to the digital network can be connected at Norchard only. Calls from the Parkend digital network to the Strowger can be handled at Parkend without any problem as the low back EMF relay set has been built and just needs cabling in.
19 January : It is proposed to move the line plant record keeping from John Bathgate to Martin Lunn. The following points outline the procedures we intend to adopt.
20 January :
23 January : It's still a clearing up time at the railway. Rick and Martin were in the exchange sorting junk for the sale table or the skip. Charles had a look at the faulty light in the exchange but it's a LED tube in a modified fluorescent fitting so he is still thinking about it. Sam and Peter went surveying the situation at the Junction and at Parkend may have come across a BT jointer who could help with the external joint required at DP1E. I went to Parkend to reinstall the first selector I had demodified. Then I attempted to wire the two wire repeater relay sets to the IDF but was diverted by a fault in Parkend North exchange, then a fault in the U points of the relay set and faults in the cradles holding the associated incoming selectors. By the time I had sorted out what I needed to do it was time to go home.
30 January : I did nothing as the existing NCD to ASK junctions are not working. I did not want to add new untested gear to faulty junctions. Rick is tidying and sorting spares in Norchard exchange. Charles continues with his light saga. Sam tried to get the Asterisk back to health but failed. Not a very productive day. But it was freezing outside! Sam has bought a couple of Rasberry Pies using our fund in order to initially set up a demo digital system.
February 2019 :
6 February : Peter, Martin and Charles looked at records, Alan and Sam experimented with a demo asterisk system. I went to Parkend and cabled, terminated and jumpered the two wire repeaters into circuit.
13 February : Sam and Alan repaired an S&T circuit at Parkend, Rick and Martin continued to work in Norchard exchange while I went to Parkend to make a start on getting rid of the hard to reach IDF blocks.
20 February : Some records were checked first. Rick and Martin are continuing with getting Norchard overhauled. This will take a very long time as they are really going to town on getting the equipment, cleaned and properly adjusted. Sam and Ray are having a go at getting the new PA speakers connected up. I have now got all five first selectors at Parkend demodified and working as standard. I checked the junctions from Parkend to find Junction 1 to Norchard dis out and very noisy. It's been busied but needs attention next time.
27 February : Rick and Martin found the dis in Parkend Junction 3 at DP3Y. Bad connection again. They went back to maintenance at Norchard. Charles had a go at sorting the cable for sale to Bendall's and getting connectors etc cut off. I went to Parkend and got the three circuit auto auto relay set off the old IDF block and onto the new block. Much easier to jumper now.
February 2019 :
6 March : Rick and Martin are continuing to do the maintenance in Norchard. Sam and Peter checked the Lydney Junction SPTs and had to correct some line plant errors to get everything working. The PA is not working at the Junction, also probably due to line plant rearrangement errors. Ray and I worked on a fault at Parkend but found nothing conclusive, every now and then a selector drops out, but nothing is consistent. I have now cleared one of the old IDF blocks, the other has only a few miscellaneous services on it and another day should see the old IDF cleared and recovered. Then I will have to tidy all the wiring forms on the rack as they have all been cut open for wiring rearrangements.
9 March : Roger and Sam met up at Parkend, before decanting to Lydney Junction to investigate the broken PA in the station building. When we looked into the DP inside (1B), we discovered that it was significantly different than the records! We wired it to how it should be, toned out the circuits from the MDF, and soon had the Beatles pounding out across Lydney from the speakers!
13 March : Our day started with a discussion on the regular maintenance of "safety critical" telecoms gear. Even with S&T involved this did not lead to any precise definition. Sam is to write an instruction on such maintenance. I am to put together a training package on our concentrators as I have ended up being the only person who is competent to maintain them. Sam and Alan then went on to complete the annual tests of all Norchard phones and to make some necessary repairs. Martin, Rick and Charles returned to Norchard exchange maintenance. I returned to Parkend where I shifted the incoming final selectors onto the new IDF block.
Current Value of our Fund
Return to the Diary Menu