Enjoy! #FF-This hashtag mostly shows up on Fridays, which should give you a good indication of what one of the Fs means. The other stands for Follow, and the two combine to make the phrase Follow Friday.. Follow Friday is essentially a Twitter holiday with the aim of getting people to follow one another.
Technical. Original manufacturers part,390 Mhz frequency, 9-volt battery operated, part number 976LM a 977LM keypad is substituted per the manufacturers change, Color: Grey Works with all Liftmaster, Sears and Chamberlain garage door openers, utilizing the 390 Mhz frequency.echnical. Original manufacturers part,390 Mhz frequency, 9-volt battery operated, part number 976LM a 977LM keypad is substituted per the manufacturers change, Color: Grey Works with all Liftmaster, Sears and Chamberlain garage door openers, utilizing the 390 Mhz frequency.
Back before streaming audio, and before the limitless listening options offered by the first commercially successful MP3 player (Diamond Rio), we listened to radio. We had entertainment and listening options all up and down a frequency scale ranging from 550KHz â 1600KHz (AM), or 88MHz â 108MHz (FM). All we needed to do was turn the dial of a radio and move a sliding pointer along a band of numbers until we heard something we liked. Rhapsody RY-610. For those of us who felt âlimitedâ by the popular listening options, we preferred using a multi-band radio.