There'll be no mixed signals from this aerial extension kit.
eBay
4pcs 100mm 150MM 200MM 300MM 500MM 600MM 900MM 1000MM Servo Extension Cord for JR Plug Servo Extension Lead Wire Cable
Aliexpress UK
Coaxial TV Aerial Cable Extension RF Fly Lead Digital Male to Male Coax. This TV cable is constructed of coax cable with male to male connectors. It is supplied with a gender changer / Coupler to suit any situation where a male to female cable is required.
eBay
1.8M Cable Tower Extension Lead with USB Slots with 18W USB C Fast Charger(5V/3.1A), 12 Way Plug Extension Tower
Aliexpress UK
Available in the sizes 0.5m, 1m, 2m, 3m, 4m, 5m, 7m, 10m, 15m. Coax Cable. Male to Female TV cable with male coupler. View Full Cable Range. Available in Black and White. Available in Black or White.
eBay
2Pcs 1 Way Extension Lead 1M,Sturdy and Fireproof Single Socket Extension,Travel Use Small Power Cord, British standard
Aliexpress UK
Simply unplug the existing lead from the back of your TV and the wall socket, connect one end of this lead to the wall socket, then run to the new location and plug the other end into the TV. Male coax plugs to Male coax plug lead.
eBay
10M/ 5M 5.5mm*2.1mm DC Power Connector Extension Cord Jack Adapter Lead Cable DC Female Male Extension External Plug
Aliexpress UK
RF Extension Lead – Freeview TV Aerial Cable with Coupler (0.5m / 1m / 2m / 3m / 5m / 10m, White). Extend your TV aerial connection easily with this high-qualityRF Extension Lead, complete with anRF Female-to-Female Coupler for simple plug-and-play installation.
eBay
3/5/10/15/20/30/50M 5.5mm*2.1mm DC Power Connector Extension Cord Jack Adapter Lead Cable DC Female Male Extension External Plug
Aliexpress UK
High quality TV aerial leads with gold plated connectors and shielded RG6U 75 Ohm cable. Inside the cable is a copper braid and then a layer of foil which ensures the best possible image with little interference.
eBay
3/5/7m Power Extension Cord, UK Single Extension Lead 3PIN Male Plug to Female Single Socket 13A Power Cable black
Aliexpress UK
Thehigh quality ComlynxTV cable is constructed of coax cable with male to male connectors, and supplied with a female to female coupler for convenience. Coax Cable. Male to Male TV cable with female coupler.
eBay
10Pcs/pack 30cm Servo Extension Lead Wire Cable For RC Futaba JR Male To Female Extension Cable 3 Pin Female To Male Connector
Aliexpress UK
These TV cables are constructed of coax cable with Male to Male and Male to Female connectors. Coax cable. Male to Female TV Aerial Cable. Male to Male Cables are supplied with a female to female coupler.
eBay
10pcs 150mm 300mm 500mm Servo Extension Cord Servo Line Male To Female For JR Plug Servo Extension Lead Wire Cable RC Helicopter
Aliexpress UK