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I think this can be applied to products as well. The quality is often better if you spend more money on a alignment tool set product. We need to spot low-quality alignment tool set products from those which have been made with care and consideration. I like to buy alignment tool set products that are of high quality. I try not to purchase anything that is low-quality because it will only end up needing a replacement in the near future.
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Good luck, Rich P. Last edited: May 25, Wonderful gear, but the bar doesn't need to be that high. Most of the tuners we need to align are limited in the precision of their adjustments. IMO, you also have to start somewhere, with something, to begin learning at all. ConradH , May 25, Exactly what I have said, Rich P, and you express better. You need an open mind here. You need to know what alignment entails. KentTeffeteller , May 25, Don't forget, you need to use plastic or ceramic tools when adjust the slugs of a tuner, as metal ones will throw the measurements off.
Rod Beauvex , May 25, Messages: 26, Location: Out West. This question comes up frequently, and I used to try to answer, to no avail. The bottom line is, if you're asking how to do it, you're probably not ready. Sincerely, there are very, very few tasks as complex as properly aligning a stereo FM MPX tuner circuit. Here's my suggestion: Start by learning how to align an AM radio. If you can understand what you're doing, meaning you're not simply following a checklist, but you actually understand how AM receiver circuits and their block diagram functionality works, then you're ready to tackle FM.
Mono FM. The MPX Stereo comes last. Fisherdude , May 25, Westy56 likes this. Hey, and don't forget a good frequency counter! IMO, the best candidate to learn this is somebody who already has all the basic equipment for other service on their bench. That would be the scope, counter, THD analyzer and meters and such. Only at that point does it make sense to start collecting the RF and stereo signal generators.
At that point it's not such a big leap. About this product. Brand new: Lowest price The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging where packaging is applicable. Manufactured from a durable non-conductive Celcon material.
FREE Trial! See all 6 brand new listings. Buy It Now. Add to cart. Sold by miamielectronics About this product Product Identifiers Brand. Show More Show Less. New New. Thus, the frequency information collected by the network may be network-wide and not just limited to spectrum information at the base-station. This information may be used to create a geospatial spectral usage database that includes historic frequency information, per time-span and per geographic location.
Information such as spectrum usage information may be collected, stored and analyzed, and this information may have a relatively fine granularity e. An analysis of this geospatial spectral usage database may be performed for a variety of uses, and the analysis may be made from historical data or in real-time. For example, this enriched spectrum information e.
For example, a network individual components of the network may be configured to dynamically change frequency at specific times based on this information.
This may be done based on an analysis of a larger database, or based only on locally collected frequency spectrum information. During installation of a wireless radio device that operates within the operational band covered by the database e. A spectrum analysis engine could use the GSDB to recommend ways to set-up a network so that it will run most effectively, including alignment.
Although many of the device variations described herein including two receivers acting in parallel, the database of enriched frequency information may be constructed using devices that do not include a separate primary and secondary receiver.
For example, a device e. For example, a single receiver may switch between modes e. Such an embodiment may be used in particular when switching between modes could be performed relatively quickly e. Similarly, a network may include one or more nodes that only include frequency spectrum monitoring devices receivers. In some variations the devices may include a virtual wireless radio, which may have both a filter for receiving wireless data at frequencies within the band and spectrum analyzer for monitoring frequency spectrum information of the entire operational band.
Also described herein are point-to-point alignment systems. Any of these systems may be used as part of the wireless radio systems described herein. Point-to-point alignment methods and apparatuses devices and systems may generally include ways to optimization communication between a first wireless radio e. The methods, devices and systems for point-to-point alignment may include the use of an alignment tool which may a hand-held tool, or it may be integrated into a wireless antenna device, or it may be remotely located e.
In some variations the point-to-point alignment tool is an application which may include one or more of software, hardware or firmware that runs on a handheld computer such as a smartphone or other mobile computing device.
The methods and apparatuses described herein may be local to the antenna being aligned, or they may include the use of remotely located components, including a remote processor e.
The point-to-point alignment tools and methods described herein may be used with any of the methods and apparatuses described herein, including the dual-receiver apparatuses and the geospectrum databases GSDB described above, and may incorporate use of the enriched frequency spectrum information. For example, the point-to-point alignment methods and apparatuses may adjust the alignment based on optimizing information calculated from the GSDB e.
In general, the point-to-point alignment apparatuses and methods described herein may be used in a cloud environment e. The methods and apparatuses for point-to-point operation described herein typically include methods and devices for point-to-point alignment of wireless radio devices using an alignment tool having a compass. The compass may be read by the alignment tool, and may be part of or locally positioned relative to the device being installed e.
The device being installed is typically positioned remotely relative to the other wireless radio device with witch it is being aligned. For example, the antenna to which the local antenna is being aligned with may be more than a few feet more than 20 feet, more than feet, more than feet, more than a mile, etc. In general, a method for point-to-point alignment of a wireless radio device using an alignment tool may include determining a location of the first wireless radio device that is remotely located relative to the alignment tool, determining the location of the second wireless radio device that is local to the alignment tool, using the compass of the alignment tool and the locations of the first and second wireless radio devices to determine a direction to point the second wireless radio device; and displaying, with the alignment tool, an indicator of the direction.
In general, the locations of the two antennas may be determined from global positioning satellite GPS information. In some variation the position of the local antenna is determined by GPS from a separate handheld device, such as the alignment tool or a smartphone configured as an alignment tool, where the alignment tool is positioned next to or near the antenna and the position of the antenna is inferred from proximity to the position GPS position of the alignment tool.
In general the compass provides directional information. The directional information may be provided relative to magnetic north, for example. In general, the compass is electronically readable, so that direction can be sensed by the alignment tool. In variations including fine tuning sensors e.
The alignment methods and tools described herein are an improvement over currently available methods and systems for point-to-point aligning of antennas. For example, without an alignment tool, an antenna orientation and position is typically manually and iteratively adjusted by attempting to first make a link, then manually aligning the link to improve signal strength by comparing received transmission strengths between the two antennas, which may be time consuming and difficult, particularly for antennas separated by any significant distance.
Although an antenna mount may be configured for fine tuning the X-axis as well as the Y-axis to help installers better align and perform point to point PTP antennae deployment, this doesn't solve the problem of having to go through an iterative process to align PTP links, but instead may only provide limited help in dealing with alignment challenges.
Installers may spend several hours just to align a link and not be certain whether it is optimized or not.
The systems, devices and methods including in particular the alignment tools and methods of using them described herein may allow an installer to establish the link and adjust the alignment in seconds with confidence alignment is optimized , in contrast to the much longer alignment process currently required.
In this example, the alignment tool is configured as a small device e. The antenna or mount may include mounting bracket for the device. The tool also includes an input for compass information, including direction e. Finally, and optionally, the tool may also include an input for one or more accelerometers, including tri-axial accelerometers, including x-axis rotation, y-axis rotation, and z-axis rotation. In addition, the tool may include an input for position e.
In some variations, as described below, the tool may also include an indicator of the link quality e. At a minimum, the tool may include an input for GPS position of the local antenna, the remote antenna and the local compass heading. From this information, e. In some variations the alignment tool may include near-field communication e.
Any of the alignment tools described herein may communicate with or include a display, and may also be capable to wirelessly connect to a corresponding tool on or attached to the other antenna, or may directly talk with the antenna itself to determine its location or other parameters e. In one variation, the tool of one antenna talks directly to a tool on the other antenna. See, e. Optionally, an adapter or other connector may be used to fix the smartphone to the antenna to lock the relative position of the smartphone to the antenna structure.
In general, the tool may be used to instruct or guide a user e. In one variation, only one motor is included, to adjust the Y-axis. In another variation, one motor is implemented to adjust the Y-axis, and one motor is implemented to adjust the X-axis. In, yet another variation, three motors are implemented to adjust the X, Y and Z axis. Auto-adjustment through real-time feedback may be used for initial set-up. After the device is aligned, the antenna is locked into position.
In another variation, the antenna may continue to correct its alignment when the system detects miss-alignment. An example of alignment generic alignment is shown in FIG. In this example, two antennas are being aligned for point-to-point transmission and the signal strength is optimized between the two devices. The first antenna e. One challenge with installing outdoor wireless equipment at long ranges is the equipment is usually very directive focused and must be precisely aligned so the radios on both ends of the link are aimed directly at each other.
As mentioned above, the systems and devices described herein are not limited to outdoor devices. Typically, the better the quality of alignment, the higher the signal levels of the wireless link are.
An alignment tool configured as executable instructions code stored in a non-transitory computer-readable storage medium that controls a processor may be implemented as an application e. For example, a mobile alignment tool may be configured as executable instructions that run on a smartphone. The smartphone may include one or more sensors that provide directional information and may be operated as a compass. The sensor s providing directional information may be referred to as a compass. Any of the mobile devices including smartphone variations described herein may include a built-in compass for automatic bearing calculation.
In general, point-to-point alignment may be performed in steps using the alignment tool. In general, this calculation may be performed by the device, with the user providing sufficient input to determine the locations of the local and remote devices.
For example, a user may input the location of the remote device, or a reference that indicates where this location information may be found. The initial alignment of the two remote and local devices may be referred to as rough alignment.
If a device is connecting to a device many miles away, it may be difficult to establish an initial rough connection between the two devices.
An installer may manually use the GPS coordinates of the remote device, the GPS coordinates of local device, manually calculate bearings between the coordinates, and use a compass on site to establish a general direction to aim the device.
The alignment tools described herein may simplify this and provide more accurate and faster alignment by providing an easy to understand directional indicator e.
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