Yes, I have a random wire antenna that I use with the radios in the basement workshop that is oriented exactly like that, and even about those lengths. It works fine, especially once I put a choke (a dozen turns of coax wrapped around a ferrite toroid) on the incoming feed line, to reduce RFI currents flowing on the coax shield. One might make the argument that it is more omnidirectional than a straight longwire antenna.