I remember these well - korean made SSB similar inside to several Hatadi units (Super cheeta 3, Super panther 3, etc).
The lankar had an "RF-G" switch that always confused the newbies
Only newbies bought these, many radio shops worldn't sell them, they were sold in auto accessory stores and petrol stations.
Seriously - one of the worst SSB radios ever made.
Poor quality controls, bad internal shielding (they often threw a carrier on SSB), very poor filtering - somebody transmitting 2km away would splatter these things across all 40 channels. We were inundated by faulty units back in the early 90's and in the end refused to service them.
I take it that this is NOT what you wanted to hear...