[Yaesu-FT-991] MARS / CAP MOD

I've tested and this proves that this rig is capable of tx at 446MHz for ex as it is.. software mod only I guess.. some hacker among us? :-)

I've checked that out of band TX is possible only via service menu. Manually tunned 446.05625MHz and rig was putting power to the antenna with a flawless FM modulation. Im a owner of a EU version, and it will NOT tx above 440.000MHz under normal running circumstances. So, fisically everything should be ready for tx, just software blocking our path I guess.

Hi did you actually change settings in the service menu? if so what settings?i think a lot of people ,myself included are little bit dismayed at the lack of tx from 146 to 148 after all the 991 is advertised on yaesu uk site as 144-148 tx on vhf.. i have emailed yaesu uk on numerous times to get an explanation for this but with no reply....yaesu are guilty of misrepresentation and false advertising so they need to be more forthcoming with the required information.

FT-991 Expand TX ( MARS Modification )

FT-991 versus TS-590

I have a TS-590 and now a new FT-991. I would appreciate any comments or discussion on reasons to keep the TS-590 or should I just go ahead and sell it. It seems that the FT-991 will do everything that my TS-590 did but I am always reading about how great the TS-590 are that I am concerned that after I sell it I will regret it.

I know that I should be able to compare the two rigs myself but I can't.

Any thoughts comments, pro and cons, etc. would be appreciated.

FT-991 Transceiver SWR meter on 2 and 440

My internal SWR meter is reading 1.5:1 on both 2m and 440
running 35 watts into a 50 OHM BIRD load connected DIRECTLY
to the VHF/UHF SO239 connector. Nothing wrong with this load!
Same thing with another BIRD 50 OHM load via a short coax cable.
SWR goes to zip when the power is reduced to 5-10 watts.
Using FM and RTTY modes to generate carrier.
160 thru 6 meter readings are fine.
Are the SWR meter readings valid on 2 and 440?
Royce - W3IF

[Yaesu-FT-991-group] Serial Number

My radio is 4N020430. The last owner took delivery Jan 2015.  I recently traded a IC-7100 for it.  However shortly before he saw my ad in qth.com, he had already sent the radio back to Yaesu. They up dated the Firmware, found the PA bias was out of adjustment and fixed that. Bill had a ton of issues with the ATU and the radio with or without the ATU going into HISWR. The replaced parts in the ATU and did some other mods, but would not tell him what they were or why they did them, even though he called a number of times and asked. He was very open to the condition of the radio and what he did and why before he approached me for a trade. 3 weeks later (Yaesu was slow), he got the radio back, tested it and the same day he mailed it to me and we did the trade...

Was the radio bad?  It appears so.  It also appears he headed off blown finals... 90% of the time the radio was used vhf/uhf and 10% PSK31 at 20-30 watts.  

The ATU is still as bad as the FT-450/AT I once had... 3:1 in a radio that is intended for a field radio these days is just plain stupid.... It will load my G5RV on 40 and 20 meters only. It will smooth the SWR on my vertical on 40, 20, 17, 15, and 10 meters. If I want to use it with a EndFed 9:1 unun, then the internal ATU is useless.  Luckily I have a MFJ-2289 Big Ear portable full size dipole for 20-6 meter and with the added coil a OCD for 40 and 30 meters and don't need the internal ATU. The antenna has a built in Guanella Balun and I can honestly say it is THE SINGLE BEST portable antenna I have ever used and that is a long list.

I have had the radio for only a few weeks... Still learning it. Basically a nice radio, but far from easy to use as compared to say the IC-7100, my K3 or even my KX3 and other I have had. I would rate the radio good to very good at this time but far from great. Because all the repeaters in the White mountains of AZ, where I live,  belong to clubs and they jumped at the special fusion deal, I will have this radio probably for quite awhile for C4FM/FM. At the time I have used in the radio 95% of the time for Digital using FlDigi. Soon I will tackle WSPR and WSJT-X. 5% if the time FM. I have not tried C4FM as of yet.

FT-991 software FTRestore is a Windows desktop application

FTRestore

FTRestore is a Windows desktop application I developed to upload, download and compare memory channels and menu settings in the Yaesu FTDX1200 and FT-991model transceivers. Details of the Regular Memory Channels and the PMS Memory Channels can be uploaded from the transceiver into a worksheet grid control where they can be modified as required, before being saved in a Microsoft Excel compatible file. Details of the Menu Settings can also be uploaded, saved and downloaded. The files can be opened at a later time and have the memory channel and menu setting details downloaded again to the transceiver. There is also the ability to compare the memory channel and menu settings details in FTRestore with the values in the transceiver to detect any discrepancies before uploading or downloading.

Config for FT-991

The following illustrates the configuration that I found to work for WSPR-X and the Yaesu FT-991. Version of WSJT-X is V1.6.0_RC2 r6253 running under Windows 7.

The enhanced port for my FT-991

Unboxing the Yaesu FT991

Unboxing the Yaesu FT991

http://youtu.be/odlK8QgeWL0

FT-991

Yaesu's Newest Rig for 2015 FT-991
160 Meters through 70 Centimeters –

 SSB/CW/FM/C4FM Digital/AM/RTTY/PSK

100 Watts

FT-991 100W HF/50 MHz, 50W VHF/UHF Compact Base Station Transceiver. 

This New Generation All-Mode Transceiver is capable of operating SSB, CW, AM, FM, Packet and System Fusion C4FM Digital. The FT-991 is designed for the most competitive operating situations, with a suite of new features to enhance the experience. Whether you primarily operate at home, mobile or in the field, the FT-991 will provide outstanding fundamental performance plus give you easy access to the full range of exciting modes available on the ham bands today.

The FT-991 provides solid transmitter performance with up to 100 Watts on HF/50MHz and 50 Watts on 144/430 MHz. Recognizing an all-important Amateur Radio Golden Rule - “You cannot work them if you cannot hear them”– the FT 991 features a rugged state-of-the-art highly balanced receiver circuit configuration. The highspeed floating point DSP chip TMS320C6746 (3000 MIPS / 2250 MFLOPS) from Texas Instruments used in the receiver design guarantees excellent interference rejection with actual signals under real-world conditions, not only on HF but also in the VHF and UHF bands.

The 1st IF frequency is protected by selectable robust 3 kHz and 15 kHz roofing filters that effectively attenuate interfering signals. The triple conversion circuit structure allows highly flexible gain distribution at each stage. This proven receive design architecture enables elimination of unwanted signals through filters at each stage as well as optimized gain distribution.

A built-in 3.5-in TFT full color touch screen high resolution display with loads of information provides stress-free operability and visibility for the FT-991 user. Advanced Spectrum Scope with ASC (Automatic Spectrum-Scope Control) located just below the LCD display gives the operator all the information for comfortable QSO on the DXing scene.

FT991 or IC7300 or FT817 replacement?

 IC7300, FT991 or wait for the FT817 replacement?

At the moment I am looking for a new rig, but I am prepared to wait some time. I have never been keen on running high power and 5-10W would serve me well. I like that the new IC7300 is SDR based, but I like that the FT991 includes 2m and 70cm.

At the moment I think I'll just wait for the FT817 replacement. I hope this includes 4m, but it sounds like it uses the same IF as the FT991, so I guess 4m is unlikely. Ideally I think the IC7300s (10W version) would be a good bet, especially if this comes out with 4m too.

I dislike fans, so I assume the IC7300S and FT817 replacement will not have these? Lets hope ICOM market the IC7300S as a QRP radio in Europe. 10W pep is a decent power. Certainly enough power for most occasions.

SIt would not surprise me if the FT817 replacement stayed at 5W but they also had a companion booster amplifier, maybe 20-50W. As we will be on the way down in the solar cycle next year (2016) this may be a reasonable compromise. What would they do about the auto ATU? I guess any bolt-on amp would have to have its own. I still think Yaesu seriously misjudged the market for this rig and the timing. There are so many FT817s out there and people have been gagging for a replacement/enhanced version for years. Now Yaesu is playing catch-up rather than leading. As I said yesterday, this new radio will need some seriously good features if it is to sell as well as the FT817 has done. Oh, expect some very good deals on the FT817ND early next year. The dealers will want to clear shelves in readiness of the new one.

YAESU FT991

Yaesu's Newest Rig for 2015 FT-991

160 Meters through 70 Centimeters –

 SSB/CW/FM/C4FM Digital/AM/RTTY/PSK
100 Watts

Additional information:

• Article by PA1WBU April 17, 2015 ©
• Text and Photos edited by PA2OLD
• Yaesu FT-991 - Erste Erfahrungen (9 videos)
• The Yaesu FT-991 page
• eHam.net reviews
• HAM Radio FT-991 review by Whisky Kadman
• RadioCronache about Yaesu Firmware Upgrade

Visit website :::

YAESU FT991

Yaesu FT-991 All Mode HF/UHF/VHF

Yaesu FT-991 All Mode HF/UHF/VHF

HF/UHF/VHF Forsale I have the Yaesu FT-991and all original accessoriesincluding box not shown. Thisradio is less than 4 months oldin mint condition there are nomarks or issues with it and couldbe sold as new. Radio was kept ina non-smoking environment and Iam the original owner. This is a steal of a deal don'tmiss out! I am asking $1275 shipped UPSinsured to US only. USPS money order or Bank Checkpayment only. Video of it working can be found here: https://www.youtube.com/watch?v=KCI2GeV_GqU Yaesu FT-991 All Mode

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