Slažem se s kolegom: engleski prijevod s nekog jezika predočen ovdje vrlo je loš. Radio-frekvencija sama po sebi ne može biti koduktivno spregnuta (ili direktno, izravno, spregnuta, uparena, mislim da je sve ok) - ali IZVOR frekvencije može (znači izvor RF unutar uređaja, vjerojatno je metalnim dijelovima je u direktnom fizičkom kontaktu s drugim metalnim predmetom, koji može biti npr žica ili bilo koji komad metala).
Isp.
https://en.wikipedia.org/wiki/Direct_coupling
"In electronics, direct coupling or DC coupling (also called conductive coupling) is the transfer of electrical energy by means of physical contact via a conductive medium, in contrast to inductive coupling and capacitive coupling. It is a way of interconnecting two circuits such that, in addition to transferring the AC signal (or information), the first stage[clarification needed] also provides DC bias to the next. Thus, DC blocking capacitors are not used or needed to interconnect the circuits. Conductive coupling passes the full spectrum of frequencies including direct current.
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Such coupling may be achieved by a wire, resistor, or common terminal, such as a binding post or metallic bonding.
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The advantage of direct coupling is very good low frequency response, often from DC to the highest operating frequency that the system will allow. All applications that require monitoring of slowly changing signals (such as those from thermistors, thermocouples, strain gages, etc.) must have a very good DC amplification with minimum offset errors and hence they must be directly coupled throughout, and have offset correction or trimming incorporated into them."

Imajući sve ovo u vidu, prvu bih rečenicu prevela ovako:
ISM oprema grupe 1 sadrži namjerno generirani i/ili korišteni izvor radio-frekvencije s izravnim (konduktivnim) uparivanjem koji je nužan za funkcioniranje same opreme.