I have been compelled to use dial up ISP service for some time. Recently a high speed RF link service has become available. It operates on 5.7ghz. The ISP transmitter is located on a mountain top at
Have you considered trying a yagi instead of their dish? Have you considered a heater on your dish? -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Thanks! & 73, doc kd4e Echoes of Eden
Dan, I work with 6 GHz point to point microwave systems at the railroad. We do not use heated antennas or radomes. However, I would recommend you install a dish antenna that includes a fiberglass rad
Hi Bill, The rain and snow attenuation seems to always raise this type of question. At the opposite end of the spectrum (440 MHz) where I ran ATV, snow and rain did not have a perceptible influence o
In general, liquid water attenuates more strongly than frozen water, so rain is much wose than snow or ice. (but not all snow/ice is dry!). The usual number I've seen where folks start to worry about
Hi Dan, I build wireless ISP for the operators. As a fast check you might get the information on the radio pwr, receiver gain, antenna gain, etc and plug it into the calculator in the link below and
There are frequencies where there is a resonance with water molecules which causes a quite high attenuation, even without rain or snow. I can't find any data in a brief search, but recall that 54 GHz
My DirecTV receiver will die briefly during very heavy rain. I don't know what frequencies they're using, but it isn't a very big dish, so there probably isn't a lot of gain margin. Remember -- it's
The DBS birds use Ku-band which is typically 14.0 to 14.5 GHz on the uplink and 11.7 to 12.2 GHz on the downlink. Rain fade is a real issue at these frequencies and typically requires something on th
Assuming that your ISP is using proper radomes at the mountaintop headend, then you are probably okay. You can probably get by with a coarse mesh dish for wireless at 5.8 GHz (barbecue grill) since y
Fortunately for me, my Dish TV antenna is within reach -- bolted to a post below a deck -- and I periodically go out with a broom and sweep the snow of it. At least on the receiving end, that takes c
Dan: I have some experience in the type of link your ISP offer to provide broadband to you, there are several options in the 5.7-5.8 Ghz , one very popular and easy to install is the Motorola Canopy,
about 12 GHz (Ku-Band) probably around 5-10 dB. EIRP in orbit costs a bunch, so they figure pretty close to the edge. Jim W6RMK _______________________________________________ See: http://www.mscompu
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Tue, 1 Nov 2005 00:23:21 -0500
With mine it doesn't have to be covered. Just heavy rain or snow between me and the satellite and it's a dark screen. I need a larger dish. Roger Halstead (K8RI and ARRL 40 year Life Member) N833R -
My most recent work was in satellite b'cast TV, during which also digitized cable TV across two countries & went through so many attempts to do DTH in a number of markets I have lost count. Rain fade
And there you have the basic conflict in high gain antennas. If you make it big enough to have the link margin you want, then you've got to point it too accurately, which raises the installation cost
W6RMK added: Yes, installation monkeys usually aren't given spec-ans, but those that I have watched who do have them will do silly things like try to do so with silly setting like 20 dB/div on amplit