Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Jan. 16, 2024	Mar. 31, 2023
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 31, 2023
Document Transition Report	false
Entity File Number	0-13301
Entity Registrant Name	R F INDUSTRIES LTD
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	88-0168936
Entity Address, Address Line One	16868 Via Del Campo Court, Suite 200
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92127
City Area Code	858
Local Phone Number	549-6340
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	RFIL
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 37.1
Entity Common Stock, Shares Outstanding (in shares)		10,343,223
Auditor Firm ID	596
Auditor Name	CohnReznick LLP
Auditor Location	Tysons, Virginia
Entity Central Index Key	0000740664
Current Fiscal Year End Date	--10-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false