UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Radio (domestic)

Notices

Vintage Radio (domestic) Domestic vintage radio (wireless) receivers only.

Closed Thread
 
Thread Tools
Old 20th May 2017, 9:24 am   #1
PaulR
Nonode
 
PaulR's Avatar
 
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 2,024
Default Radio 4 198 sibilance

Is it starting again? It seemed distinctly off during the PM programme yesterday afternoon and again this morning.
__________________
Paul
PaulR is offline  
Old 20th May 2017, 10:03 am   #2
raditechman
Heptode
 
raditechman's Avatar
 
Join Date: Feb 2007
Location: West London, UK.
Posts: 660
Default Re: Radio 4 198 sibilance

I noticed this Saturday morning, thought my radio was off tune.

John
raditechman is offline  
Old 20th May 2017, 10:05 am   #3
Hybrid tellies
Nonode
 
Hybrid tellies's Avatar
 
Join Date: Jan 2004
Location: Bristol, UK
Posts: 2,404
Default Re: Radio 4 198 sibilance

I noticed this just before 6pm last night. It seemed to go bad after some bursts of lightning static. Checking on the lightning chart showed a cluster of lightning strikes over the West Midlands where the Droitwich site is. I wonder if anyone has reported this to our friends at Arqiva or should we do it. As the TMS's are coming up I think they would be interested.
It's interesting to note how different radios respond to this fault, some like my pocket radio the Roberts R984 really hate it and it sounds horrible whereas my old original Bush TR130 tries to make the best of it to make it sound sort of listenable.
__________________
Simon
BVWS member
Hybrid tellies is offline  
Old 20th May 2017, 11:08 am   #4
sexton_mallard
Hexode
 
sexton_mallard's Avatar
 
Join Date: Sep 2013
Location: Ellesmere, Shropshire, UK.
Posts: 289
Default Re: Radio 4 198 sibilance

Definitely a bit of sibilance going on at the moment according to my ears. I compared R4 LW to R4 via Freeview and a AM pantry transmitter on a Bush DAC90A and a Ferranti A1016. Once you notice it, it's hard to ignore.
__________________
Dom

Less snakes...more ladders!
sexton_mallard is online now  
Old 20th May 2017, 11:15 am   #5
Andrew2
Octode
 
Join Date: Mar 2010
Location: Dukinfield, Cheshire, UK.
Posts: 1,499
Default Re: Radio 4 198 sibilance

Same here, it sounds sort of 'untidy'.
__________________
Andy G1HBE.
Andrew2 is online now  
Old 20th May 2017, 12:51 pm   #6
PaulR
Nonode
 
PaulR's Avatar
 
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 2,024
Default Re: Radio 4 198 sibilance

And I was thinking yesterday morning how good it sounded.
__________________
Paul
PaulR is offline  
Old 20th May 2017, 1:07 pm   #7
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 18,557
Default Re: Radio 4 198 sibilance

I honestly don't understand why Arqiva can't sort this out permanently. It must be a clearly understood problem by now given how many times it's occurred and been fixed.

My guess is the symptoms are caused by equipment which is at the interface of Arqiva's and another contractor's responsibilities, and nobody can agree who should fix it and how the fix should be paid for. It's a disgraceful state of affairs.
paulsherwin is offline  
Old 20th May 2017, 1:12 pm   #8
PaulR
Nonode
 
PaulR's Avatar
 
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 2,024
Default Re: Radio 4 198 sibilance

Martin G7MRV has been helpful about this in the past.
__________________
Paul
PaulR is offline  
Old 20th May 2017, 1:48 pm   #9
merlinmaxwell
Dekatron
 
merlinmaxwell's Avatar
 
Join Date: Jul 2008
Location: Maidenhead, Berkshire, UK.
Posts: 8,469
Default Re: Radio 4 198 sibilance

I agree with Paul, it is only... Audio in*, low pass filter**, and then onto the modulator.

*I get a really good radio 4 feed from my set top box!

** not much left on LW, remove the filter, HiFi (as was in the 30's 40's etc.) long wave again.
__________________
Cats have staff, it's dogs that have owners.
merlinmaxwell is offline  
Old 20th May 2017, 1:58 pm   #10
GeoffK
Heptode
 
Join Date: Mar 2016
Location: Essex, UK.
Posts: 515
Default Re: Radio 4 198 sibilance

These are the email addresses to contact Argiva. It took nearly a year of complaining to the BBC about their local medium wave output being faulty before an email to Argiva finally put it right so maybe they can do the same with BBC Radio4 L.W.

enquiries@arqiva.com

david.allatt@arqiva.com

Arqiva Limited. Registered office: Crawley Court, Winchester, Hampshire SO21 2QA
__________________
Geoff
GeoffK is offline  
Old 20th May 2017, 2:56 pm   #11
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 18,557
Default Re: Radio 4 198 sibilance

Quote:
Originally Posted by merlinmaxwell View Post
I agree with Paul, it is only... Audio in*, low pass filter**, and then onto the modulator.
To be fair to Arqiva, it's not that simple by a long way. Radio 4 LW has some very odd programme distribution arrangements dating back to when it was an important part of civil defence arrangements, and that is likely to be where the problems are arising rather than inside the transmitter site. It's understandable that the BBC don't want to expend money and management time on what they see as a legacy technology that they'd prefer to close down.

All that said though, the present position is not sustainable. It's just downright unprofessional. It would be better to take the R4LW internet or satellite stream, Optimod it and then shove it straight into the transmitter.
paulsherwin is offline  
Old 20th May 2017, 2:58 pm   #12
Nuvistor
Dekatron
 
Nuvistor's Avatar
 
Join Date: Aug 2013
Location: Wigan, Greater Manchester, UK.
Posts: 7,200
Default Re: Radio 4 198 sibilance

Not sure about sibilance, it sounds distorted to my ears, which admittedly are not good. Tune to 252 and that stations modulation sounds excellent.
Frank
Nuvistor is online now  
Old 20th May 2017, 6:06 pm   #13
merlinmaxwell
Dekatron
 
merlinmaxwell's Avatar
 
Join Date: Jul 2008
Location: Maidenhead, Berkshire, UK.
Posts: 8,469
Default Re: Radio 4 198 sibilance

Quote:
Optimod it and then shove it straight into the transmitter
I thought Radio 4 was the only (BBC) station not to use Optimod.
__________________
Cats have staff, it's dogs that have owners.
merlinmaxwell is offline  
Old 20th May 2017, 6:22 pm   #14
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 18,557
Default Re: Radio 4 198 sibilance

No, R4 is very heavily processed, especially on LW. R3 is relatively lightly processed, especially in the evening.
paulsherwin is offline  
Old 20th May 2017, 7:52 pm   #15
Andrew2
Octode
 
Join Date: Mar 2010
Location: Dukinfield, Cheshire, UK.
Posts: 1,499
Default Re: Radio 4 198 sibilance

Quote:
Originally Posted by Nuvistor View Post
Not sure about sibilance, it sounds distorted to my ears, which admittedly are not good. Tune to 252 and that stations modulation sounds excellent.
Frank
I'd call it 'ragged' or 'untidy', a mix of distortion and sibilance. It's quite unpleasant.
__________________
Andy G1HBE.
Andrew2 is online now  
Old 20th May 2017, 8:05 pm   #16
michamoo
Hexode
 
michamoo's Avatar
 
Join Date: May 2006
Location: Cambridge, Cambs. UK.
Posts: 409
Default Re: Radio 4 198 sibilance

I was listening to Radio 4 from Droitwich yesterday at 5 PM. Three times it did actually sound as if the transmitter went off air completely. Just hash/hiss with faint audio from the Scottish transmitters I think. When it did come back on it did seem to sound as though my radio was off tune a little (Bush TR82- 97).
__________________
If smoking is so bad for you, how come it cures kippers?
michamoo is offline  
Old 21st May 2017, 7:48 am   #17
Kentode
Hexode
 
Kentode's Avatar
 
Join Date: Mar 2015
Location: Todmorden, West Yorkshire, UK.
Posts: 404
Default Re: Radio 4 198 sibilance

It sounds OK here now but yesterday it was very "spitty".
__________________
Regards, Ken.

BVWS member

Last edited by AC/HL; 21st May 2017 at 1:18 pm. Reason: OT aside edited, please use PM.
Kentode is offline  
Old 21st May 2017, 8:00 am   #18
MurphyNut
Heptode
 
MurphyNut's Avatar
 
Join Date: Apr 2016
Location: Croxley Green, Hertfordshire, UK.
Posts: 629
Default Re: Radio 4 198 sibilance

This is interesting, I was listening to radio 4 yesterday on my Murphy A30 and I was disappointed it didn't sound as good as it normally does. I assumed it was a component gone in the set, this was put to rest when I tried another good set and it also sounded poor.
__________________
Clive
MurphyNut is offline  
Old 22nd May 2017, 9:22 am   #19
Hybrid tellies
Nonode
 
Hybrid tellies's Avatar
 
Join Date: Jan 2004
Location: Bristol, UK
Posts: 2,404
Default Re: Radio 4 198 sibilance

I have reported the fault to Arqiva over the weekend using both those email addresses just to make sure it gets through
I was going to listen to R4 on 198 this morning but my car radio only has medium wave and FM.
__________________
Simon
BVWS member
Hybrid tellies is offline  
Old 22nd May 2017, 10:47 am   #20
MurphyNut
Heptode
 
MurphyNut's Avatar
 
Join Date: Apr 2016
Location: Croxley Green, Hertfordshire, UK.
Posts: 629
Default Re: Radio 4 198 sibilance

Just listened to Radio 4 on LW and it still sound very poor, distorted. It sounds like the station is permanently "off tune."
I hope it's sorted out as Radio 4 the only decent thing left on vintage radios to listen too.
__________________
Clive
MurphyNut is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 1:01 am.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Copyright ©2002 - 2019, Paul Stenning.