Anomalies, Please don't confuse the abysmally uninformed, like me! Compared to steel rebar in the street's pavement, the Analyzer doesn't know my concrete driveway is reinforced with fiberglass stra
ones degradation. When mounted in a plastic airplane vs. on a metal airframe, the monopole whip antenna + ground plane can be as annoyed by things nearby. The essential difference can be that the lon
Antennas work by the rule of reciprocity, and above indicates antenna is not the problem, at least in that azimuth of the 360-deg pattern. If you can't hear a ground station, but other A/C yes, and t
If at all times off the nose, or same azimuth point elsewhere, it could be a simple matter of which of their transmitters they're using. They need not have the same xmit power, but if an installatio
Bryan, My slang references to turkeys, geese, and doorstops do have meaning, "...but that's not important right now." [from our classic comedy movie "Airplane!"] :-) Azimuth references points around
Just as in a (cheap) plastic notebook computer, such a device can emit vigorous EMI, but rendered very weak if all else is up to snuff. Signal-to-noise ratio (S/N) can be computed on a 4-function cal
there at It's not design shortcomings, but installation issues. A dipole is an actual reference antenna, as a baseline to publish specifications for any antenna (the spec is "dBd"). Ergo, you don't
interference? There's something radically wrong with either the antenna, the receiver, or both. The crudest squelch circuitry shouldn't matter if all else is OK. If you can't hear ATC in conditions
I've done this many times, for freqs other than VHF comm. Real slap-dash affairs with cardboard, wire, and duck tape. A few dB of antenna abuse is no problem if the avionics sitting on the right seat
Mechanical joints eventually corrode, unless attention is paid to metal fasteners. Else, it will not alter performance. The VHF antenna sees the xpondr antenna as a tiny thingy of no consequence. Ho
installations) are radio radio. Or the actual service bench experience? Seriously, one need only to look at the front of the box to know it's freq-synthesized, computer-controlled, Rube Goldberg mach
It has occurred to me I now should describe the world of eBay, so nobody gets burned. The Narco COM 120 I bought was actually funny. Very good cosmetic condition; tested great on the bench. The selle
through but the Wickenby on using a hand held Bob, Everything you have been describing says there is not enough RF microvolts arriving at the back of the box -- by a wide margin. How far do you have
he has connected account especially He said what? In coaxial transmission line theory, the shield does what the center conductor does. That is...if the line is balanced (i.e., ferrite bead "balun" a
dipole. First, a VSWR meter may not clearly show what that setup is doing. It has no ability to assess whether the antenna is capable of receiving or transmitting anything. If VSWR reads good, we ac
If properly swaged, the cable is supposed to break first under tension. If two are used, it's insurance in case the first one is not quite compressed enough (possibly like my swages). So I guess whi
converted my own only took a I too added the anr-headsets.com kit to an old Peltor 7004 that had been long gathering dust, because I was using the David Clark ANR, and I wanted to try something else.
between Garmin under the almost certain It could be internal to either box, or the cable. So first eliminate the cable, and then guess which box. I believe the GTX-320 has large integrated circuits (
Most of these planes are lighter than a Europa. Pulsar says the 914 will go faster than the Jabiru 3300, by 18 mph. Esqual does not claim 160k cruise. In fact, their web site says that for the new F
Could you post exact numbers regarding relative margins? Especially on the Rotax 914 -- not MSRP, but how much must they have to accept or they're not selling very many. I don't know enough about the