The Royal Commission on Allegations Affecting Members of the Parliamentary Joint Committee of Public Accounts in Connection with Claims Made by Broadcasting Companies Against the Commonwealth Government was established by Letters Patent on 15 May 1930 "to inquire into, and report in relation to the following matters:  

1. the matters referred to in a letter, a copy of which is attached
   hereto, dated the eighth day of May, one thousand nine hundred and
   thirty, from the Chairman of the Joint Committee of Public     
   Accounts to the Prime Minister and in the enclosures annexed     
   thereto; and
 
2. whether any bribe, valuable consideration, advantage, recompense,
   reward or benefit was accepted by, or offered or suggested to, any
   member of the said Committee in connection with the inquiry into a
   claim by certain Broadcasting Companies in Australia for 
   Pounds 64,261.10s.7d. stated to be in respect of actual
   expenditure made and incurred and incidental thereto in connection
   with the amalgamation and co-ordination of the said companies in
   pursuance of a demand alleged to have been made upon the said
   Companies by the Commonwealth Government."
 
George James Dethridge, Chief Judge of the Commonwealth Court of Conciliation and Arbitration, was appointed Commissioner. Hearings commenced on 22 May and continued on 23 and 24 May concluding on 17 July.
 
A claim for compensation from the Commonwealth made by certain Broadcasting Companies was referred by letter of 29 November 1929 from the Prime Minister to the Parliamentary Joint Committee of Public Accounts. The Committee began its sitting on the claim on 16 January 1930 in Melbourne. Mr Condor of Dominion Broadcasting Pty Ltd represented the Broadcasting Companies in support of the claim.  
Before the Committee began its sittings Mr Green, a member of the Joint Committee, received a letter of introduction from Mr Percy Deane, Secretary for Home Affairs, to Mr Finkelstein, Publicity Manager for J C Williamsons Ltd, to gain hospitality in their theatres, he was unaware that J C Williamsons was involved in the claim.
 
"Mr Green indiscreetly began to make advances towards a friendly intimacy with Mr Condor" and use was made of the hospitality of the J C Finkelstein Theatres. Mr Green said that Mr Condor approached him (the only member of the Committee opposing the claims) after the sittings had ended and offered him 200 pounds, this offer was not repeated or mentioned again between the two men.
 
On 4 April an Insurance agent, whose name Mr Green could not remember suggested that Mr Coleman (Chairman of the Parliamentary Joint Committee of Public Accounts) had been paid 500 pounds, the inference being that Mr Green could accept the same.
 
A premature leakage of the Committee's affairs in the Sydney Morning Herald caused Mr Green to suppose there was "an improper leakage of information from the Committee" and he drew this and what had previously occurred to the attention of the Committee.
 
Dethridge considered Green an honest witness with powers of memory that were not accurate or acute, no malicious intent in making these claims was attributed to Mr Green except inasmuch as he was apt to be inaccurate in his recollection and observation and somewhat precipitate in his inferences.
 
Banking accounts of all members of the Committee were free of any suspicion. Mr Green did not acquaint Mr Coleman of the allegations against him before Mr Coleman left Australia and it was only immediately before his departure that he heard of the allegations having only time to deny them. His bank account and that of his wife did not support the allegations. Mr Condor's account did not suggest that any improper payments had been made.
 
The conclusion of the Commission was that the allegation that Mr Condor offered a bribe to Mr Green was not sustained; Mr Coleman did not receive a bribe of 500 pounds and "no bribe or other benefit was accepted by or offered to or suggested to any other member."
 
The Report was signed on 6 August 1930, presented by Command and ordered to be printed 8 August 1930.
 

Sources
 
Commonwealth Parliamentary Papers, 1929/31 Vol III, pp 629-638 Borchardt, Checklist of Royal Commissions, pp 60-61
Historical agency address
Canberra
Legislation administered
Letters Patent 15 May 1930 (Register of Patents No.56 p352)
Commonwealth of Australia Act No.12 of 1902, Royal Commissions Act 1902-1912