UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV 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.

Reply
 
Thread Tools
Old 29th Jan 2014, 5:32 pm   #41
PaulR
Dekatron
 
PaulR's Avatar
 
Join Date: Oct 2003
Location: Southport Lancashire, UK.
Posts: 3,233
Default Re: R4 198 Sibilance back?

I haven't noticed any improvement since my original post. I sent off a couple of complaints but never received a reply.
PaulR is offline   Reply With Quote
Old 29th Jan 2014, 6:34 pm   #42
Andrew2
Nonode
 
Andrew2's Avatar
 
Join Date: Mar 2010
Location: Dukinfield, Cheshire, UK.
Posts: 2,036
Default Re: R4 198 Sibilance back?

I've just sent in a complaint. It really is getting silly now - R4 LW is one of the UK's 'flagship' radio services, and it's dog-rough.
__________________
Andy G1HBE.
Andrew2 is offline   Reply With Quote
Old 29th Jan 2014, 6:49 pm   #43
M0TGX Terry
Hexode
 
Join Date: Sep 2005
Location: Grantham, Lincolnshire, UK.
Posts: 262
Default Re: R4 198 Sibilance back?

Aha, it's not just me then.
I wrote to BBC Complaints, PO Box 1922, Darlington, DL3 0IT on 14Jan to complain, and got a telephone call in response, on 22 January. The man who called me said he'd checked the quality by listening to an interview on radio 4, and he found the sibilance so bad that in the end he turned his radio off. He referred it to "his technical colleagues" who apparently said there was a problem with the ground plane at Droitwich drying out!!! I reminded him how much rain the Midlands has had in the last few weeks, at which point he suggested I keep a log for a week of when the problem occurs, then send it to his address (as stated above), or I could telephone him on 03700 100 123. He was very pleasant, but so far the problem is still there. The week is now up and I shall submit my log tomorrow. For the record, I have listened on a variety of valve, transistor and IC based sets, at various times between 0700 and midnight. The problem only occurs on days with a "y" in their name.
Maybe we should organise a march on Broadcasting House.
Terry
__________________
Terry the Morganist
M0TGX Terry is offline   Reply With Quote
Old 29th Jan 2014, 9:36 pm   #44
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,934
Default Re: R4 198 Sibilance back?

I think we established in an earlier thread that this awful quality relates to the distribution path switching to some sort of ancient low bitrate backup circuit (maybe ISDN) and never switching back. It's not a transmitter fault as such. Why it's taking so long to sort out is anybody's guess, but it may be down to the complex contractual relationships between the companies involved (the BBC, BT, Siemens Broadcast and Arquiva).
paulsherwin is offline   Reply With Quote
Old 29th Jan 2014, 9:44 pm   #45
G6Tanuki
Dekatron
 
G6Tanuki's Avatar
 
Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,996
Default Re: R4 198 Sibilance back?

Quote:
Originally Posted by Andrew2 View Post
I've just sent in a complaint. It really is getting silly now - R4 LW is one of the UK's 'flagship' radio services, and it's dog-rough.
I honestly don't see R4LW as inn any way a "flagship" service - nobody I know listens to it by choice - indeed they're most likely to complain about the 'muffled, no top-end' quality when they've got no other option but R4LW to listen to the cricket when they're in the car, and they switch back to FM as soon as they get the chance.

Of the R4 listenership I honestly reckon that less than 5% of it is on long-wave these days.
G6Tanuki is offline   Reply With Quote
Old 29th Jan 2014, 9:57 pm   #46
PaulE27
Pentode
 
PaulE27's Avatar
 
Join Date: Jul 2010
Location: London, UK.
Posts: 222
Default Re: R4 198 Sibilance back?

I listen to R4 LW by choice. The signal is more robust than FM, as are the receivers, as they don't need a flimsy telescopic aerial to work properly!

Paul
PaulE27 is offline   Reply With Quote
Old 30th Jan 2014, 12:29 am   #47
Andrew2
Nonode
 
Andrew2's Avatar
 
Join Date: Mar 2010
Location: Dukinfield, Cheshire, UK.
Posts: 2,036
Default Re: R4 198 Sibilance back?

My office is in a part of our village where R4 FM is extremely poor and 'multi-pathy'. LW is the only option. The ragged, sibilant sound quality makes me cringe sometimes! I sometimes tune to the French stations for comparison and they sound fine (for 6KHz BW AM).
I suppose it depends how you define 'flagship'. R4 LW is still listened to in many parts of Europe, and although the shipping forecast is available via other means nowadays, many skippers still like to hear it on good ol' LW.
It's also a reliable frequency standard and AFAIK it is still used to control domestic heating timers.
__________________
Andy G1HBE.
Andrew2 is offline   Reply With Quote
Old 30th Jan 2014, 11:20 am   #48
lesmw0sec
Octode
 
Join Date: Jul 2009
Location: Carmel, Llannerchymedd, Anglesey, UK.
Posts: 1,506
Default Re: R4 198 Sibilance back?

I usually listen to R4 on my olde R1155 beside my bed at around 10.30 - 11pm. Quite agree with other posters - the quality is dreadful. Just tuning to any other station sounds fine. If I can discern the problem on a radio somewhat older than me - there must be a problem!
lesmw0sec is online now   Reply With Quote
Old 30th Jan 2014, 12:06 pm   #49
PaulM
Hexode
 
Join Date: Nov 2006
Location: Near Lincoln, UK.
Posts: 483
Default Re: R4 198 Sibilance back?

Yep, just listened to it on my trusty Atalanta and it sounds truly dire!

I do hope it's not the transmitter - it's a Marconi and I remember it going through the factory in Chelmsford. It loomed large (very large) in the next door lab to where I worked.

If it is the ISDN link as suggested above, then it's high time it was fixed. Just how hard to mend can that be?

Maybe this is just part of a 'plan' to pull the LW service by making it sound duff?

This needs bringing to the attention of the press.

Cheers,

Paul M
PaulM is offline   Reply With Quote
Old 30th Jan 2014, 2:27 pm   #50
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,457
Default Re: R4 198 Sibilance back?

I somehow thought it was back again, for a minute, I thought the Ekco U199 UL41 was suffering from a leaky grid again!

After trying 198KHZ on a PLL radio, it does sound a bit bad from the not-so-sunny outskirts of Wrexham.
Glowing Bits! is offline   Reply With Quote
Old 30th Jan 2014, 2:56 pm   #51
Hybrid tellies
Nonode
 
Hybrid tellies's Avatar
 
Join Date: Jan 2004
Location: 1966-1976 Coverack in Cornwall and Helston Cornwall. 1976-present Bristol/Bath area.
Posts: 2,965
Default Re: R4 198 Sibilance back?

I have raised this issue on Digital Spy and sent a message to Arquiva. Have not bothered with the BBC because there site is just a nightmare. I think the problem is not as bad as it was a few weeks ago but it still sounds bad on modern and older sets. Its as if they have turned the treble down but we are still getting lots of sibilance
__________________
Simon
BVWS member
Hybrid tellies is offline   Reply With Quote
Old 30th Jan 2014, 3:10 pm   #52
PaulE27
Pentode
 
PaulE27's Avatar
 
Join Date: Jul 2010
Location: London, UK.
Posts: 222
Default Re: R4 198 Sibilance back?

I was listening just after 12:00 today, when the signal disappeared completely. It came back a bit later for about 30 sec, before going off again. It is still off, two hours later.

The curious thing is, though, I thought the audio problem had been fixed during those 30 seconds!

Incidentally I don't believe it could be an ISDN fault (that would be all or nothing), although it could be a codec fault.

Paul
PaulE27 is offline   Reply With Quote
Old 30th Jan 2014, 3:18 pm   #53
Station X
Moderator
 
Station X's Avatar
 
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,286
Default Re: R4 198 Sibilance back?

I'm receiving R4 LW at reduced signal strength at the minute. Droitwich could be on low power or off the air altogether.
__________________
Graham. Forum Moderator

Reach for your meter before you reach for your soldering iron.
Station X is offline   Reply With Quote
Old 30th Jan 2014, 3:36 pm   #54
PaulM
Hexode
 
Join Date: Nov 2006
Location: Near Lincoln, UK.
Posts: 483
Default Re: R4 198 Sibilance back?

I'm pretty sure it's on quite low power. I normally have to crank the RF gain on my Atalanta down quite a bit to stop it being overloaded at the front end. It's now full up just to manage a reasonable signal level. Not very scientific, but a pretty good indication of something going on. I like listening to R4 on the Atalanta because it's a Marconi New Street product at both ends - kind of satisfying in a nostalgic way!

It could still be ISDN - paralleling of ISDN feeds is often used to increase data capacity and if the R4 signal is part of a multiplex then anything could happen if one or more of the links is lost.

However, given that we have low power, it does begin to look like a transmitter problem (or perhaps antenna?).

Here's hoping a solution is on the way. Perhaps 'somebody' reads this forum! If they do, can we have a technical explanation, please? Not some management-speak excuse, a detailed fault report.

Cheers,

Paul M
PaulM is offline   Reply With Quote
Old 30th Jan 2014, 3:39 pm   #55
colourking
Pentode
 
Join Date: Nov 2007
Location: Cork, Ireland
Posts: 134
Default Re: R4 198 Sibilance back?

Quote:
Originally Posted by Station X View Post
Droitwich could be on low power or off the air altogether.
Using the BBC's reception postcode checker:

Quote:
LW Radio
Your local transmitters are...

Transmitter Channel Effect When
Droitwich Radio 4 LF Off Air from 12:08 today
colourking is offline   Reply With Quote
Old 30th Jan 2014, 3:52 pm   #56
Station X
Moderator
 
Station X's Avatar
 
Join Date: Jan 2003
Location: Ipswich, Suffolk, IP4, UK.
Posts: 21,286
Default Re: R4 198 Sibilance back?

I'm obviously receiving it from the transmitter in Scotland then.
__________________
Graham. Forum Moderator

Reach for your meter before you reach for your soldering iron.
Station X is offline   Reply With Quote
Old 30th Jan 2014, 3:55 pm   #57
Glowing Bits!
Octode
 
Glowing Bits!'s Avatar
 
Join Date: Oct 2011
Location: Wrexham, North Wales, UK.
Posts: 1,457
Default Re: R4 198 Sibilance back?

According to the 'Radio & Television Service' website, Radio 5 Live on MW is on low power, Radio 4 LW is off altogether.
Glowing Bits! is offline   Reply With Quote
Old 30th Jan 2014, 5:28 pm   #58
paulsherwin
Moderator
 
paulsherwin's Avatar
 
Join Date: Jun 2003
Location: Oxford, UK
Posts: 27,934
Default Re: R4 198 Sibilance back?

The ISDN reference was just a guess. The important point is that the audio feed is going through some extremely low bitrate circuit in the distribution channel, which results in the splashy sibilants and generally grainy sound. If you listen to World Service on DAB you'll hear similar effects, though R4LW is worse.
paulsherwin is offline   Reply With Quote
Old 30th Jan 2014, 6:20 pm   #59
high_vacuum_house
Octode
 
high_vacuum_house's Avatar
 
Join Date: May 2003
Location: Belper Derbyshire
Posts: 1,935
Smile Re: R4 198 Sibilance back?

Quote:
Originally Posted by Glowing Bits! View Post
According to the 'Radio & Television Service' website, Radio 5 Live on MW is on low power, Radio 4 LW is off altogether.
I was going to blame my Murphy AD32 and then my Murphy A70

Christopher Capener
__________________
Interests in the collection and restoration of Tefifon players and 405 line television
high_vacuum_house is online now   Reply With Quote
Old 1st Feb 2014, 5:14 pm   #60
Guest
Guest
 
Posts: n/a
Default Re: R4 198 Sibilance back?

Just had a look on my SDR, it is there.
  Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 8:59 pm.


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 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.