Sg 230 smartuner

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Sg 230 smartuner

The SmartLock provides two external controls for the SG A locking function prevents automatic retuning despite changing antenna loads eg.

A 'tuned' led also indicates locally when the SGC achieves a match. Although SGC can supply this optional unit, it's easy to build your own version from the circuit details found in the 's manual:.

The SG is, in fact, an antenna coupler. It intelligently couples any length of antenna from about 3 to 27 meters. No preliminary tuning is required, and the Smartuner will operate with any HF transceiver in the 1. The SG automatically evaluates and switches 64 input and 32 output capacitance combinations, plus inductance combinations in a 'pi' network - over half a million precision matches are possible.

The Smartuner then remembers the chosen frequency and tuning values and automatically reselects those values - in less than 10mS, each time you select the frequency. These features provide great logistical and operational flexibility for dxpeditioners. Back to Fun Stuff.The SG Smartuner was the first product in the HF market to offer fast, flexible tuning without any user interface. The Smartuner senses RF when you transmit from your transceiver and automatically finds the best SWR match to your antenna.

The SG can be used in base station, mobile, marine and aviation applications - and has been the "Gold Standard" of automatic antenna tuning for more than a decade.

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The SG is built in a rugged ABS plastic enclosure which is sealed to protect it, and allows ultimate versatility in installation. With this tuner and any single antenna, you will have continuous coverage from 1.

The unit is built to last, with the highest quality components and backed by SGC's standard 1 year warranty and industry leading technical service. Compare Smartuner Specifications. Download a brochure or manual in pdf format.

Read comments from other users. Read about real user installations. Visit our FAQ page. Look for technical notes on the SG Review magazine articles and press releases.

SGC Inc. A Wise Investment The SG is built in a rugged ABS plastic enclosure which is sealed to protect it, and allows ultimate versatility in installation.I am fortunate that I have in my possession an SG Smartuner remote automatic antenna coupler. Contrary to my usual method of operating, I took a moment to read the entire manual cover-to-cover.

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A summary of some of the specifications can be found in a comparison brochure which SGC provides. By the way, SGC provides a great deal of useful information such as an HF guidebook — lots of great information to be found! Admittedly, this unit is a few years old, it should certainly meet my goals. My intermediate-term goal is to use this coupler to allow the use of random long-wire antenna systems while camping.

My present goal is to press the unit into service as a long-wire loop antenna coupler for an attic installation. As the SG comes to be as a status-unknown unit, I wanted to bench-test the antenna coupler prior to deploying it in a difficult to access location. I started by having a look under the clam-shell to perform a sniff-test and to look for any signs of abuse.

Lo-and-behold, a bodge wire jumps out at me right away. The wire runs between pin-9 of a 74F74 and pin-1 of a 74HCD. Investigating a little further, it looks like a rather shoddily done bodge at that! I really hope this was not done by SGC themselves; the quality of work on this is pretty poor, and the work was not cleaned either.

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I took pictures so that I could later refer to the images for settings such as jumpers, CPU version, etc. I am glad I took these photos to better document this investigation.

Now there are many reasons to run a bodge-wire, namely when a problem in a design is identified and it is not practical to spin-up a new board immediately. This would likely have been fixed in subsequent designs, were it an actual design issue. When a bodge wire is found in a relatively simple design, it may be beneficial to investigate a bit further.

Was this a repair? What exactly are the devices and does it make sens to have run the bodge wire the way that they have?

Referring to the datasheets for the 74F74we discover that this IC is a dual d-type positive edge-triggered flip-flop. This is likely used to convert an analog waveform to a digital fast-edge binary waveform for frequency measurement. It is likely that the output of this flip-flop goes to a counter or a buffer.

SG-230 Smartuner (Antenna coupler) investigation

Looking at the pin-out of each IC, it is apparent that the CK1 pin and Q2 pins are tied together and this makes sense for converting an analog waveform and then counting the resulting signal.

It may be that there is no electrical connection between the pins on the board layout issues, forgotten pads, etc or it may be that there is a compromise of some kind which negatively impacts the operation of this supposed frequency counter circuit. To really dig into this, I would need to remove both ICs to probe the pads properly.

So many questions!

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My question here is: was this an intentional solder-bridge or an accident? My guess is that someone goofed on this portion of the circuit design, requiring two bodges in this PCB version. Please let me know if you can! Being fairly confident that the bodges found would not negatively impact the operation of the antenna coupler, and with no other evidence found in a quick sniff and poke of the board, I powered the unit observing the correct polarity, which apparently has been an issue for some users.When you subscribe, you receive only messages for the product you have subscribed to.

You can check your current subscriptions and remove yourself from subscriptions at any time by visiting the Reviews Home page and clicking on the 'here' box under Subscriptions. If you have comments, questions, or problems with this procedure please write to the Forums Manager. This project involves a management team of volunteers who each take a topic of interest and manage it with passion. The site will be something of which everyone involved can be proud to say they were a part.

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SGC Smartuner SG-230 Manuals

Forgot Password. Reviews Home. This SG Smartuner is unbelievable in what it can do. I live in an apartment and do not have the room for a large antenna. What I have done is drive a 4' pipe 3' into the ground and mounted a " CB whip antenna.

I have also ran 2 17' radials around my patio. Not only does this tuner manage to tune this setup but the SWR is less than 1. Have not had much free time to play with this setup.

Tuning is fast and easy. Just transmit and it tunes, storing in memory for even faster tuning when you return to a previous tune. This tuner is not cheap but after experiencing the SG, I would buy it again. I have no regrets! I have owned 2 SGC antenna tuners over the years. I bought my first SGC in I have never had any problems with my SGC My SGC tuner has always worked great, and never had a problem tuning up my antenna. I strongly recommend this tuner.

It is highly reliable. You will have a hard time finding a tuner built with more quality. This tuner works very good,as a extra i added a "Smartlock".

sg 230 smartuner

I tried several other tuners but this is the one. Now i operate on a CB antenna of almost 2 mtrs but a 2,72 cm whip is also tried. As a costumer you need support when you need but i you got no answer on a simple qeustion. I bought a second one because almost no EU shop has a new one in stock. Bought one directly from SGC.

It lights up, but when RF is applied on it, nothing happens. And yes, I know how to use a tuner. I tried contact several times, by e-mail by phone, and the only thing SGC wants to know so far, if I bought it new or used; no matter I sent a copy of recipt and wire transfer to them.

They never sent an email or made contact after my emails.Table of Contents. Microprocessor controlled automatic antenna coupler 82 pages. SGC Building, S. Bellevue, WA.

SGC Smartuner SG-230 Manual

BoxFax: or Tel: or Page 6 When the same conditions are encountered again, re-tuning is accom- plished within 10 milliseconds by recalling the information from the memory. Special software has been designed by SGC to allow accurate and fine tuning of the coupler. SGC Smartuner The antennas outlined in this book are fed with an SGC Smartuner.

Virtually all modern transmitters are designed to operate into a 50 ohm load. Page 9: Chapter 3 Basic Antenna Theory Along with efficient operation of an antenna, it is also a good practice to design for the desired radiation pattern. SGC Inc. Page 10 This will dis- tort the natural radiation pattern of a given antenna. If you are interested in working stations out to about miles on the 40 and SGC Inc.

The impedance matching range of the Smartuners is from about. As long as you follow the basic guidelines and use good practice, you can expect the Smartuner to match virtually any load to your transmitter. Page 18 4 or more evenly spaced wires - longer than the radiating element SGC Inc.

Page 19 Another, possibly better source of a good ground system is a copper piped sprinkler system. Page 21 You may choose either the buried radial system, or the ground rod system that are described elsewhere in this book. Page 33 SQL: Squelch. Page 35 The weather proof design allows outdoor mounting, and gives the maximum possible muli-band performance from your antenna.

The SGC Smartuners are backed by an industry leading 5 year warranty for your assurance.TX to Ae. Given the enormous amount of domestic electronic equipment now in service, anyone attempting to set-up a short-wave transmitting installation at home is almost certain to experience EMC problems.

This is particularly the case for those who attempt to drive a wire antenna against an earth stake, the reason being that the house wiring, being more conductive than soil, acts as a parasitic ground plane. The domestic house must now be regarded as one of the most difficult of environments from an EMC point of view; containing both sources of HF noise and devices susceptible to HF interference. Any voltages or currents induced in the house wiring by a radio transmitter are likely to cause problems, especially with Hi-Fi systems, burglar alarms and computers.

Reciprocally, if the mains wiring forms a parasitic component of the antenna system the earth is part of the antenna after all then any mains powered device with an oscillator in it is likely to cause reception interference.

Radio operators often spend large amounts of time trying to resolve such issues on a case by case basis, but this is at best a war of attrition when new devices can be introduced at any time.

The definitive solution is to use an antenna that does not require an earth, to place that antenna clear of the building, and to force the feedline currents to be equal and opposite so that the feedline can neither radiate nor receive radio signals.

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The simplest HF antenna associated with best EMC practice is the centre-fed wire dipole or doublet used in conjunction with one or more balun transformers. The ease of integration into a domestic environment accounts for its popularity, but a failure to appreciate the capabilities of the basic device has given rise to a literature filled with misleading suggestions on the subject of how best to use it.

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Introductory material recommends that the dipole should be made one half-wavelength long, so that it can be connected directly to a transceiver antenna socket; but that gives rise to a system that will only work on a single amateur band or part thereof and leads to the belief that anyone who wants to operate on m must have a garden at least 80 m long.

Specific recommendations for improving upon this highly restrictive situation are then; the introduction of traps, which permit operation on more than one band but are lossy and difficult to adjust; or worse still, the inclusion of some magic length of twin-wire line between the antenna and a co-axial cable feeder.

It is always possible to obtain broadband performance by introducing resistive losses, but such devices are better classified as patio heaters than as antennas. The reality of the dipole antenna is that it does not need to be operated at resonance.

sg 230 smartuner

Furthermore, any wire longer than about 25 m can be used for international communication throughout the entire HF range m included. All that is required to realise this phenomenal versatility is a matching network an ATU or AMU to cancel the antenna reactance and transform the input resistance to match the transmitter's preferred load.

The standard method for operating a dipole antenna on all HF bands is to feed it with open-wire line "ladder line" and connect it to an ATU situated next to the transmitter. Note that a wide-range ATU is required. The antenna tuners built-in to some transceivers are designed only to correct for slightly mismatched co-axial feeders and are not intended for this application. The severe mismatch does not matter however, provided that the wire is made from high-conductivity material e.

There are certain drawbacks to the use of antenna tuners however, which may be listed as follows: The ladder line acts as a spurious impedance transformer. It can sometimes transform the antenna impedance in such a way that it is out of the working range of the antenna tuner. This means that it is sometimes necessary to prune the line in order to shift awkward impedances out of the required operating bands.The list of fields's ids that were excluded to build the batch topic distribution.

The list of input fields' ids used to create the batch topic distribution. The new line character used as line break in the file that contains the topic distributions. In a future version, you might be able to share batch topic distributions with other co-workers or, if desired, make them publicly available. A description of the status of the batch topic distribution.

This is the date and time in which the batc topic distribution was updated with microsecond precision. A status code that reflects the status of the batch topic distribution. Example: 1 combiner optional Specifies the method that should be used to combine predictions when a non-boosted ensemble is used to create the evaluation. None of the fields in the dataset Specifies the fields in the dataset to be excluded to create the evaluation. Example: "MySample" tags optional A list of strings that help classify and index your evaluation.

This will be 201 upon successful creation of the evaluation and 200 afterwards. Make sure that you check the code that comes with the status attribute to make sure that the evaluation creation has been completed without errors. This is the date and time in which the evaluation was created with microsecond precision. Specifies the type of strategy that a model will follow when a missing value needed to continue with inference in the model is found.

Either 0, 1, 2, or 3 to specify respectively whether the evaluation is from a single model, an ensemble, a logistic regression, or or a time series model. By default it is based on the name of model, ensemble, logistic regression, or time series and the dataset used.

sg 230 smartuner

NEW ordering filterable, sortable The order used to chose instances from the dataset to evaluate the model. In a future version, you will be able to share evaluations with other co-workers or, if desired, make them publicly available. The result of the evaluation. Depending on the type of task performed by the model (i. Regression results are similarly formatted, but there is a mean predictor instead of a mode.

See tables below for the result formats of each model type. A description of the status of the evaluation. This is the date and time in which the evaluation was updated with microsecond precision. A detailed result object with an entry per performance measure computed, a confusion matrix, and a break down of the performance measures per class.

Measures the performance of the classifier that predicts the mode class for all the instances in the dataset.

Measures the performance of the classifier that predicts a random class for all the instances in the dataset. Measures the performance of the model that predicts the mean for all the instances in the dataset. A detailed result object with an entry per performance measure computed.

sg 230 smartuner

Measures the performance of the model that predicts a random class for all the instances in the dataset.


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