Highest
Quality Ultra Flex Cable! eBay is allowing sellers to List cable in the titles and description as LMR-400/LMR400 when it is NOT. Don't buy without asking if a product is Genuine Times Microwave. Cheap thin Chinese Commie cable can result in even the best antenna being worse than useless. Most of the listings for LMR-400 cable here on eBay are not. When you read carefully you will find that the cable is not Times Microwave, Not made in the US, and not guaranteed by a free return shipping policy if it doesn't meet your needs. Poor quality cable will cost you significant signal strength. At some frequencies, badly made or wimpy 1/8 or 1/4 inch cable can cost you up to a Db a foot!Copper prices are rising and some off shore producers are being caught using substandard alloys.... Is the cable you are looking at Described as "Compare to" "Equivalent to""Replacement for" "Same as" or even "Like" LMR-400 ? This is common with poor quality cable made in Mainland China or some other lesser known locations. 1/2 (.405) inch Cable is perfect for runs when you don't want to loose signal strength but it isn't cheap, so please choose a product that will last for 20+ years and give you the service you require. |
Other LMR-400
Ultraflex Listings 2ft PL-259 cable 5 ft PL-259 jumper 10ft PL-259 cable 15ft PL-259 cable 20ft PL-259 cable 25ft PL-259 cable 50ft PL-259 cable 75ft PL-259 cable 100ft PL-259 cable Need another length? Just Ask! Listings for SMA/BNC/N/etc HERE |
Tech Specs
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Connector
Specification: After trial and error we determined the proper connector for our production. RF Industries produces a high quality Silver connector that solders easily using silver solder and still manages to be affordable. Quality control has proven to be excellent and they deliver solid signals with minimal loss. Full details are here We can buy MUCH cheaper connectors here on eBay but we choose not to.
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Confused by the world of WiFi and
Ham Radio |
LMR-400
Coaxial Cable Info
Genuine U.S. Made LMR-400 Coaxial
cable should not be confused with the imitations sold calling
themselves LMR400 in most eBay listings. There ARE other
quality
coax producers out there other than Times Microwave. We sell
a
couple ourselves, but please - if you don't buy here do your homework.
Certain
Chinese plants make cable for a large number of resellers and as copper
prices go up, the quality of the alloy used tends to go down as cheaper
producers tend to substitute
inferior alloy without telling or use cable with variable dielectric
thickness and
copper alloys less than 95% pure for poor conductivity. Coaxial cable design choices affect physical size, frequency performance, attenuation, power handling capabilities, flexibility, strength and cost. Skinny cable has less metal to conduct your signal and causes more loss. More Info for Folks who like to do their homework! Liberal borrowing from Wikipedia Signal
losses are frequency dependent! Don't bother buying a good
antenna
if you are
running cheap cable. Losses can be
reduced by increasing
the diameter of the cable. A cable
with twice the
diameter will have half the signal effect resistance loss.
Assuming cable quality is equal, the larger cable would halve the
dB/meter loss. In
designing a system, consider not only the loss in the cable,
but also the loss in the connectors. Cheap connectors give you as much
loss as cheap cable. On a final note, poorly made LMR600 "type" cable
can have a greater signal loss than good LMR400... (See the
cable
chart below. Run the largest, best quality cable you can
afford.)
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LMR-400 Top LMR-240 Middle LMR-195 Bottom |
LMR-400 Outside RG-58 Inside |
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