Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
I have an application where a truck will pull onto a scale, the driver
will press a call button and a wireless talk path then must be opened up to a distant office. The office is abouut 2000ft. away from the scale. We would prefer hands feee VOX perhaps talk and listen on both ends, in fact duplex if available would be great. Does anyone know of such a system? Thanks. Lenny Stein, Barlen Electronics. |
#2
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
|
#3
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
|
#5
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
**THE-RFI-EMI-GUY** wrote:
GMRS is not legal for commercial useage. In fact the trucker would have to have a license! There are some long range wireless intercoms made. Check some home automation websites. They are for people with long driveways and similar requirement. FRS is the non-commercial one. GMRS is commercially licensable, unless the FCC changed the rules again on me. GMRS and FRS do have some frequencies in common, so they can talk to each other. Of course, if the OP is not in the USA, then this doesn't apply. --Dale |
#6
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
Nope; read the FCC CFR47 Part 95 rules. GMRS requires a $75 license and
is specifically for personal use of higher power, wide band equipment. Unless grandfathered, there should be no commercial useage. In fact, for two stations to call each other they must each have a license or belong to same family or each to a family holding a license. The definition of family is pretty wide, so if you have a cousin with a license you may operate under his umbrella. On the other hand the way the FRS rules are written is subject to interpretation. That is why you might see Walmart folks using FRS radios, and I doubt the FCC could do much. The fact that the frequencies overlap adds another dimension. Dale Farmer wrote: **THE-RFI-EMI-GUY** wrote: GMRS is not legal for commercial useage. In fact the trucker would have to have a license! There are some long range wireless intercoms made. Check some home automation websites. They are for people with long driveways and similar requirement. FRS is the non-commercial one. GMRS is commercially licensable, unless the FCC changed the rules again on me. GMRS and FRS do have some frequencies in common, so they can talk to each other. Of course, if the OP is not in the USA, then this doesn't apply. --Dale -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P |
#7
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
Dale Farmer wrote: FRS is the non-commercial one. GMRS is commercially licensable, unless the FCC changed the rules again on me. GMRS and FRS do have some frequencies in common, so they can talk to each other. Of course, if the OP is not in the USA, then this doesn't apply. Nope. Businesses CANNOT get a GMRS license. Only individuals can get a GMRS license. The FCC changed the regulations decades ago. See regulation part (b): Sec. 95.5 Licensee eligibility. (a) An individual (one man or one woman) is eligible to obtain, renew, and have modified a GMRS system license if that individual is 18 years of age or older and is not a representative of a foreign government. (b) A non-individual (an entity other than an individual) is ineligible to obtain a new GMRS system license or make a major modification to an existing GMRS system license (see Sec. 1.929 of this chapter). |
#8
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
|
#9
Posted to sci.electronics.repair
|
|||
|
|||
High power wireless intercom
Motorola has systems like that -- they're very expensive
(and rugged and reliable). The range you're looking at is a stretch for most consumer type off-the-shelf equipment. One creative way to do it would be to use inexpensive 802.11 wi-fi hardware with VOIP running between the nodes. wrote: I have an application where a truck will pull onto a scale, the driver will press a call button and a wireless talk path then must be opened up to a distant office. The office is abouut 2000ft. away from the scale. We would prefer hands feee VOX perhaps talk and listen on both ends, in fact duplex if available would be great. Does anyone know of such a system? Thanks. Lenny Stein, Barlen Electronics. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Wireless intercom | Home Repair | |||
Info on Spellman PCM series high voltage power supply | Electronics Repair | |||
Identify High Current Power Supply Transformer | Electronics Repair | |||
fm wireless intercom interferes with touch lamps | Home Repair | |||
Wireless Intercom work for Detached Shop? | Woodworking |