DFR Telecoms Diary


January 2019

1 January :

Welcome to 2019
2019 Works Programme Suggestions : The following items have all been mentioned at some time.

Fit a double low back EMF converter for the two ASL-PKD circuits at Parkend to protect the FXO modules.
Cable and jumper the ASK to PKD relay sets into circuit.
Move the Parkend concentrator head
Modify all first selectors and rack wiring back to standard at Parkend
Finish Parkend Signal box wiring for S+T.
Fit the clock in Parkend station waiting room.
Tidy the clock wiring in Parkend stationmasters office.
Finish 4320 to the Parkend Ground frame.
PKD Goods shed data rack electrics.

Norchard :
Fit auto auto relay set with regenerator to position one on new shelf and divert NCD to ASK junction 1 to it.
Fit a double low back EMF converter for the two ASK-NCD circuits at Norchard to protect the FXO modules, and jumper the ASK to NCD relay sets into circuit.
Provide museum battery jack
Finish work on the 10+50 at Norchard.
Clocks in Norchard Shop
Remove trunking, telephone and data sockets etc in the disused booking office
Recable the main office telephones and data sockets as required by the new layout.
Should we have a written down plan of what data work is to be done at Norchard and the Junction?
PA Speakers at Norchard

Junction :
Complete tidying the Junction exchange wiring
Finish voice cabling at the junction signal box including the new 20pr external cable.

Line Plant :
Update the Norchard to Parkend cable records. (Needs Rick and Martin to complete their work)
Reorganise the exchange boundary between Norchard and the Junction so that all teles south of Town Crossing would be on the Junction exchange. Rename DPs involved.
Finish jumpering the Junction MDF to provide circuits south.
Finish work on DP1 which would include 10prs to DP 1A,
Remake Junction DP1A.
Rewire Junction station to bring it up to scratch.
Reconnect the Junction far end platform SPT correctly.
Sort out cable between PKD DP1 to DP1M.
Provide new 50PR from PKD DP1 to 1D.
All spare external cable to be recovered and placed in a location where it can be checked to see if it can be reused or go to Bendall's to provide cash for new cable.
Ensure that lineside visits are properly organised and the correct records are kept.
Replace PKD DP1L cabinet with a standard one
DP1e Parkend - Fit another full size cabinet, and lay a short length of 50pr between the two cabinets.
Transfer DP record keeping to Martin and produce a reliable system for certifying all changes to records.

General :
Update and reissue the directory.
Get back to a proper annual check of all teles on the railway and the keeping of good certifying records.
Fit an asterisk box at Lydney Junction and get the BT line upgraded to broadband
Purchase some new standard padlocks
We need a combined effort to tidy up Middle Forge and Goatfield. This will involve (somebody who is not us) laying troughing from DP1F to DP1G, via the S&T cabinets at Middle Forge itself. This will involve our cable being protected.
Maintenance work in the strowger exchanges. Certified recording of the work.
Proper checks on battery condition in exchanges. Certified recording of the work.
Sort out office and caboosh and record stores. At least get the bench clear so we can do maintenance and make tea.
Update all digital junction jumpers to be appropriate with digital systems.

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.

1) The main record of line plant usage will be held in spreadsheet form on Martin Lunn's home computer, along with the date of production.
2) A printed copy of the records will be produced by Martin and will be held in a Master folders at Norchard exchange.
3) An electronic copy of the record in .xls form will be forwarded to John Bathgate for uploading to the Telecoms website.

These three copies will be the only official copies of the record. However Martin will arrange to hold backups of his records as he thinks fit.

a) When work is undertaken on the line plant, if possible, photocopies of the records with modifications will be produced. These will be signed by the appropriate technician and given to Martin for the main records to be updated. Martin will keep the works copies for a period of at least one year in case of problems.
b) The records given to Martin will only show the plant as it exists, but if pairs are reserved for future work, they will be shown as "resvd".
c) Colours on DP cards will be black for the permanent wiring and any colour for the circuits connected through the DP.
d) New line plant will be dealt with similarly although it will be necessary for the record to be produced manually or on a blank DP card.
e) Line plant records will be in the format in use for current cabinets.
f) Building MDF records will be in the format used by Peter Medcalf.
g) Points where permanent joints are made, by soldering perhaps, or where E side pairs are connected directly and permanently to D side pairs, will not be recorded as the information re wire colours etc will be available on the adjacent DPs. This restriction can be ignored if it seems sensible so to do.
h) S&T will contact Martin Lunn ( should they wish to use pairs in the network. Subsequently they will again contact Martin with the final pair usage details.
i) This procedure does not include the exchange records eg A606 etc at present.

20 January : The office rearrangements
Peter and Sam met at Norchard to do the necessary modifications to the the bench desk in the office. It is now 4.5in shorter, but you wouldn’t notice it unless you were told! They then moved the cabinet into the corner and had a very brief hoover to clean up the sawdust, before giving the office a quick sort through and tidy. Finally, Sam reattached the Edmonson machine to the desk.
The next jobs to complete in the office are adjustments to the electrical wiring (Peter and Charles need to put their heads together to decide the best way forwards), and then to rewire the telephone sockets and move the Panasonic. We also need to do some tweaks so that the railway can have 549 and several data sockets for Thomas events and anything they need to use in the Booking office.

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.

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This page was last updated on
14th March 2019