Ex-BBC Norfolk and former Radio Clyde broadcaster Michael Souter has been convicted of a series of sexual offences against seven boys aged between 11 and 16 between 1979 and 1999.
Originally from Scotland, the 60-year-old, of Loddon, Norfolk, has also been found guilty of further counts of making and possessing indecent images of children.
A Norwich Crown Court spokeswoman said that the former broadcaster has been found guilty of a total of 26 charges.
Jurors have not reached a verdict on one count of indecent assault on a male and have also cleared him of one charge of possessing an indecent photograph of a child, she said.
Prosecutors described Souter, who was also involved in the Scouts and a social services youth mentoring scheme, as a "sexual deviant" who was obsessed with young boys in shorts and uniform.
During the five week trial, prosecutor Andrew Shaw told jurors that Souter used his celebrity to abuse society's most vulnerable.
Mr Shaw told the court: "He worked in radio and television and was something of a local celebrity.
"The significance of his work and his involvement with the scouts and social services, is that these three roles brought Mr Souter into regular contact with pliable young boys and very often pliable young boys who were among society's most vulnerable.
"We say Mr Souter is a deviant sexual abuser of young boys, particularly boys in uniform and those wearing shorts."
Souter had denied the offences saying that he was the victim of a conspiracy in which allegations against him were made up.
He worked as a producer and presenter in both commercial and BBC radio since the mid-1970s. He had previously presented for Radio Clyde.
Since 1989 he has worked as a freelance broadcaster and had run a media relations consultancy.
Mr Shaw said mistakes may have been made by the authorities in the past, but added: "As we have seen in recent high profile cases, victims often only tell what has happened to them when they are ready to."
The court heard that on one occasion Souter had plied a victim, who had a casual job at BBC Norfolk, with alcohol. The boy passed out and woke to find his trousers pulled down and Souter, who had not been drinking, molesting him.
Another victim was indecently touched by Souter while at a scout camp, Mr Shaw said.
He took boys on trips to burger restaurants and theme parks and used his links with Norwich City Football Club to invite them to watch matches at Carrow Road, the court heard.
The trial heard that witnesses had felt unable to come forward because of Souter's high standing in the community.
Souter told the trial that one witness, who claimed he was forced to ask the presenter to stop touching him, owed his later career to his influence and contacts.
Prosecutors also told the court that possible offences committed by Souter abroad, including in Spain where he has a home, had been reported but could not be tried in the UK.
Head of the Crown Prosecution Service's complex casework unit for the East of England Chris McCann said: "Michael Souter is the classic example of the predatory paedophile who devoted most of his adult life to grooming and abusing young boys while maintaining a facade of the utmost respectability.
"Mr Souter presented himself to people as a local celebrity from radio and television, happy to be involved in charity events, the Scout movement and as a youth mentor for Norfolk Social Services.
"All this was a smokescreen to hide his true intention: to become close to young boys so he could sexually abuse them, confident that his celebrity status would mean they would not be believed.
"This is the tactic of the classic predatory paedophile who hides behind a facade of respectability to carefully select and groom his victims then subject them to repeated sexual assaults over a period of time."
Detectives are now investigating further allegations of abuse against the former BBC radio presenter.
Speaking after the jury at Norwich Crown Court found him guilty of a total of 26 charges, Norfolk Police confirmed a "live inquiry" was continuing into outstanding claims.
A total of 595 people have been identified as witnesses and it is understood a number of these have raised concerns about Souter's behaviour.
A spokeswoman urged anybody who may have been a victim to contact officers.
"Anyone who may be affected by anything raised during this trial can contact police," she added.
"Norfolk Constabulary is committed to working with partner agencies to prevent child sexual exploitation, support victims and bring offenders to justice."
Speaking after the case, one man who was employed by the BBC in the 1980s, said many people had long held suspicions about Souter.
"One of the first rules I was told when I started at the BBC was 'never be in a room alone with Mike Souter'," he added.
"It didn't come as any surprise to me when I heard he had been charged."
Another man, who was not involved in the trial, told police in 2002 he had been raped by Souter two years earlier when he was aged 17.
He claimed the presenter, a friend of his parents, had invited him to his house and got him drunk before attacking him in bed.
Detectives decided there was insufficient evidence to proceed but three days after the man's mother contacted officers, the family received a letter from Souter threatening legal action.
He wrote: "I have now heard from three separate sources that he is saying dreadful things about me in public, things that, if I didn't know and sympathise with (his) problems, would certainly lead to a writ being issued for defamation."
Souter went on to claim that the man was manufacturing the allegations because he owed him £150.
The man, who cannot be named for legal reasons, said: "I met Mike through my parents and he was a kind of mentor, helping me set up my own business.
"I thought he was the best thing since sliced bread - his was a world I aspired to be part of.
"When he raped me I was left confused and assumed I was the only one.
"Now I know there is a larger picture and there is little doubt that there are others in my situation.
"Mike Souter is somebody who values his reputation and public image above all else.
"Now this has been dragged through the public eye, he won't be fooling anybody anymore."