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7

I think "RIT", for "receiver incremental tuning", is a better name for that knob because it more directly explains what it does: it tunes the receiver, without tuning the transmitter. The result is that you receive and transmit on different frequencies. It is similar to operating split, with less frequency separation. This is most useful when you've already ...


5

Think of the "power" setting on the radio as more of a guideline than a rule. It should be more or less accurate, given reasonable inputs. Few radios actually measure the output power and adjust gain to achieve the desired power. More likely, the power setting simply adjusts the gain of the radio's power amplifier with no feedback whatsoever. Ideally, ALC ...


5

and welcome to ham.stackexchange.com! Sorry, but the Elecraft KPA100 won't work at all with the Yaesu VX-8DR. The VX-8DR is a handheld that runs on the 6m/2m/1.25m/70cm bands; the KPA100 works on the ham bands between 80m–10m. What's more, the KPA100 is really meant to be part of the Elecraft K2, and isn't meant to be a stand-alone amplifier. You ...


4

I've done some tests with what I have available (now including the CT-44 adapter). With the MH-37A4B Earpiece/Microphone connected, the internal microphone can still be used: whichever mic has its PTT switch pressed will provide transmit audio and the other will not. Furthermore, the external microphone is open-circuit when its PTT is not pressed. Therefore,...


4

I'm not aware of an application that has full control of every feature. However, there are a variety of applications available that work for basic functions. FLRIG will give you many of the most common features. I use the related program, FLDigi, for operating digital modes with my FT-450D. Its rig control is sufficient that I don't generally have to turn ...


4

The "data" cable you picture provides only audio in and out. Some other device, like a TNC or a computer, must provide the modulation and demodulation to provide any data capability. Additionally, the cable picture does not expose the PTT connection on the data port, so with that cable alone there's no way for the computer to key the transmitter. However, ...


4

OK, I figured it out. Turned out a little FFC cable disconnected inside the panel during the shipping. After fixing this the radio worked flawlessly!


3

Yaesu makes software like what you're looking for: Go the yaesu.com and find the FT-450D page, click on the Files tab, and look for: PCC-450 Software V1.13 and Reference Manual (07/18/14) The PCC-450 software runs on Windows and connects to the radio over a serial port. You can drive nearly every feature of the radio. I find it easier to use this software ...


3

This is from post 35317, Jan 7, 2012 in the Yahoo Group for the FT-897: With reference to my post in December I have since had a word from Yaesu that the USER setting for menu items 65 to 70 is reserved for future use and not to be used.


3

The clarifier is simply Yaesu's term for RIT (receiver incremental tuning) and XIT (transmitter incremental tuning), and can be used for either of those two adjustments, or turned off. RIT keeps your transmit frequency constant while you adjust your receive frequency. This way, when you're talking to a group (like in a net), you can more clearly hear the one ...


3

The Triple Band Stack will simply remember (store) the last frequency entered or tuned for that band and stack position. Try this: pick a band - 40 meters - by pressing [7.0] Tune to a frequency Press [7.0] again and tune to a different freq on 40 meters Press [7.0] again and tune to yet a different freq on 40 meters Now, press {7.0} repeatedly and you ...


3

Since you say that both radios have the exact same problem, I think we can more or less rule out an outright problem with the radio itself. Since you say that you used to be able to hit this repeater easily, I think we can rule out that you would be too far away from the repeater for the antenna that you are using. It also seems unlikely that both radios ...


3

My experience, with a VX-5R, is that its AM receiver just isn't very good. It will switch into AM mode when you tune into the air band, but because it's really an FM radio, there is no AGC on the AM. Distant aeroplanes sound much softer than near ones. Even if the voice is clear, it's soft. So the squelch opening and faint hum that you hear might actually ...


3

It seems on at least the FTM-400 series, there is a use for this. You can set the scan mode to "all mem" or "select mem": in "all mem" mode, the radio will scan all of the programmed channels, unless they are set to "skip". In other words, this gets "select" channels plus "off/blank" channels. in "select mem" mode, which seems to be the default, the radio ...


3

Yaesu simply uses one LCD, which has a dot matrix display in the upper part, and a few fixed icons in the lower part, as can be seen in the picture in your question, for multiple handsets. Compare this photo of a VX-8R: So, same display, different hardware. Chances that there's Bluetooth in the FT-1DR are basically zero. Bluetooth simply takes a more ...


3

I don't have one handy to validate this, but in the manual you can see the speaker grille on top of the radio in the angled view on page 20. This is the same place it is on my FT-897. So, yes, the speaker is on the body. The microphone connector pinout is unfortunately not described in the manual (it is in the FT-897's, which is largely identical), but it ...


2

RX audio: The FT-7900R has separate audio outputs for RX audio on the DIN connector for 1200 and 9600, so those can be simply wired to the two separate KPC-9612+ ports. PTT: The PTT line has a little voltage provided by the radio, and the TNC's PTT pin grounds that pin to transmit. You can directly wire both TNC port PTTs to the radio, and it'll transmit ...


2

No. You likely would need to build two new transmit stages and rewrite the firmware. Each transmit stage uses a precise final oscillator and mixer which is specific to the frequency band as well as a filter to suppress harmonics, use of the hardware for 70cm at a 33cm frequency would result in most of your transmit signal being filtered out - if it was even ...


2

For a single contact, as you say, it's pointless. When you're talking as part of a group and one or two members are slightly off frequency it lets you temporarily tune your receiver for their signals without leaving the main frequency that everyone else is on. When it's on it "clarifies" their signal; when it's off you hear the rest of the group clearly.


2

The manual for this unit doesn't seem to explain or call out these symbols. When talking about these jacks the manual warns about the following: don't leave them connected to antennas during lightning storms do not place antennas near power lines, or in a way that might allow them to contact power lines be aware of RF exposure


2

Empirically, there are four independent power settings. HF 0-32.99999 MHz 5-100 W 50 MHz 33-56 5-100 VHF 76-164 5-50 UHF 420-470 2-20 The frequency ranges shown exceed those in which the FT-897 will transmit, of course, but it will still display a particular one of the four stored values ...


2

I had the same issue. I adjust the Azimuth every day, then sometimes it fails between 15-20 degrees. Then I replaced the regulator with a new one. Now it is ok.


2

Based on your description, I suspect the problem is that you have tone squelch (TSQ) enabled. In this mode, the audio is muted unless the signal contains the proper tone, but the receive light will still light up to indicate a non-matching signal is present. (This is true outside of scanning too.) Go to Multi Function Row MFe and press the A TON button to ...


2

Page 13 of the Operating Manual says that radio has a fairly standard SO-239 jack and you need a 50 ohm antenna cable with the matching PL-259 plug. This is also commonly (and confusingly) known as a UHF connector. As far as a specific antenna recommendation, my favorite is the $25 N9TAX Slim-Jim; just make sure you select "UHF Male pl-259" for the ...


2

Well, it's a commercial product, and I'd be very surprised would Yaesu be willing to deal with the anger if it wasn't safe to do something as obvious as that. Also, from an engineering point of view, it would be trivial to shut off functionality not safe for use during charging – that literally takes but one transistor. I'm also not sure what you mean with ...


2

The bcd code for 60 metres is the same as 40 metres. (03 Hex) 0A is the code for 6 metres. I used a Arduino and monitored the output (HEX on LCD) while winding the radio tuning knob through the whole of the radios frequency range. Below is a table showing the decoded output for an Australian Model FT-857D If you look at the Begin / End Frequency you can ...


2

Hex 0A is used for 60 meters on Yaesu radios that natively operate on 60 meters.


2

It's perfectly safe. Note that you will slow charging down, since you are using some of the battery's stored energy to monitor the frequency. A better solution might be to get a second battery for your radio, along with a charging dock if you don't already have one. With many modern hand-held radios, charging docks increase the charging rate compared to ...


2

Tim, what you have said provides a few clues to the problem you are seeing. Assuming that someone has not accessed the hidden menu which allows factory alignment of the radio, your problem is not a config issue. If someone has messed with the alignment settings, ignore what follows, because what to do for that is a different answer. I'm guessing that you ...


2

After reverting MARS/CAP mod everything works as expected. I don't know whether the problem was caused by the mod per se or maybe just one of FCC cables was a little bit misplaced when the mod was made.


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