FT710 – KK4Z

Why I didn’t Preorder the Yaesu FTX1

As information started coming out about Yaesu’s new QRP radio I was tempted to get one. However, the more I learned the less I liked about it. I have an Icom IC-705 and an Elecraft KX2 for QRP radios. My big field radios are an Icom IC-7300 and Yaesu FT-710F. I am looking for another QRP radio to do a long term review. I considered the FTX1 but gave it a pass for the following reasons.

Price. An IC-705 cost $1349.95 at HRO. The FTX1 cost $1499.95 but to be truly compatible with the IC-705, you have to add Bluetooth ($54.95) and GPS ($69.95). this brings the total to $1624.85. A spare battery for the FTX1 is $199.95. The Icom battery (BP-307) is $135.95; however, knockoffs on Amazon can be had for 2 for $59.95. I use them and they seem to work just fine. Another point are the antenna tuners. The AH-705 sells for $359.95 and can tune long wire and coax fed antennas. Yaesu chose a different path they have one tuner for coax fed antennas and one for long wire each costing $319.95 or $639.90 for both.

The optima package. It cost $1899.95 to give you a 100 watt option. To put this in perspective, you can buy a FT-710 Field for $884.95 and a FTM-510 for $499.95 for a total of $1384.90. Plus you get an antenna tuner included with the FT-710 and the 710 probably has better performance than the FTX1 on HF. As a side note, the FT-991A sells for $1229.95.

Performance. Yaesu was pretty mum about the performance of the FTX1. With the FTDX101, FTDX10, and FT-710, they touted the Rob Sherwood numbers long and loud. The only thing they said about the FTX1 was it had the same Analog to Digital Converter (ADC) as the FTDX10. ADC’s are all pretty similar in all of the SDR radios. So where does the FTX1 fall? Is it like the FT-710 or is it more like the FT-991A or the FT-891? For POTA and SOTA using SSB this is probably fine Rob Sherwood recommends a Dynamic Range Narrow Spaced number of 80 dB for contesting. For CW that number increases to 90dB. The FT-891 and the FT-991 are in the 70’s range.

My friend Thomas K4SWL who is attending Hamvention put his hands on a live FTX1. His first impression was it was much bigger than he imagined. He decided to cancel his reservation for a FTX1. Looking at how things attached to the radio, I had the same thoughts. If I am going that large, I’ll bring my IC-7300 or my FT-710F. I am curious about the current draw of the FTX1 at idle.

As folks get their hands on the radio, more details will come out. Hopefully Yaesu will be more forthcoming with information, we shall see. It seems to me that Yaesu did not listen to the QRP/POTA/SOTA community when building this radio. For sure the pricing and size seem out of whack. As for me, I am still looking for another radio to review, but at this time I will give the FTX1 a pass. 73 de Scott

Yaesu FT710 final Review and Where to Go From Here

I’ve had the Yaesu FT710 for a while now and used it mainly in the field. That was and is my intent for this radio. In general, I feel if I am doing an activity like Field Day or a multi-day POTA activation, and I am not carrying my gear more than a few feet, why not bring a full sized but compact radio. These radios have more operating options and the controls are generally easier to use. In addition, running a 100 watt radio at low power (20 watts or less), the radio doesn’t even get warm. The radio works well with digital modes. It wasn’t that long ago that Yaesu’s were a real pain to run digital. Icom’s have had an easy interface since the IC-7100. Today, the FTDX10 and the FT710 both are on par with the Icom’s when it comes to digital modes. With CW, both brands are about equal. In general, I feel both radios are interchangeable and it would be the matter of personal preference which would determine which is best for you. In the next couple of paragraphs I will describe the pluses and minus’ of the FT710 and the IC-7300. John WD8LQT provided input from his use of my radio during the WGARS Spring Fling.

Attenuation. The IC-7300 only gives you 18dB of attenuation while the FT710 give you 3: 6dB, 12dB, and 18db. Your more expensive radios typically have 3 like the FT710. In an SDR radio, attenuation is your friend. Preamp should almost never be used. The nod goes to the FT710.

CW Tune. Both radios have autotune but the FT710 has a CW tuning indicator right below the S-meter. I find myself using it quit a bit. Some CW ops crank their filters way down and if you are a little off frequency, they won’t hear you. My buddy John WD8LQT, also liked this feature. Nod goes to the FT710.

Sound quality. The FT710 sounds a little better, but the IC-7300 has a lower noise floor. I do not find either one objectionable. YMMV. Draw

Waterfall. The IC-7300 has an averaging waterfall and the FT710 does not. That means that the FT710’s waterfall has to be manually adjusted every time band conditions change. John noticed that when sending CW the waterfall would flash rather brightly, enough to be a little distracting. This may have been due to the waterfall level not being adjusted properly, but it is not an issue with the Icom. Nod to the Icom.

Ergonomics. Here the IC-7300 is the clear winner. It has more of the right buttons on the control panel and it is easier to get to the most needed controls. The 7300 gives you 3 adjustable filters and the Yaesu gives you 2. To adjust the Icom, grab a knob and give it a twist. On the Yaesu, push a knob, twist the knob, push the knob, twist the knob.

Power consumption. The FT710 uses about 1.2 to 1.3 amps at idle with normal volume. The IC-7300 uses about 0.85 amps. This doesn’t matter if mains power or generator power is available but when working off of batteries this can become an issue.

Sensitivity and Selectivity. The Icom has a lower noise floor, -133 vs -127 dBm for the Yaesu. Before I get into selectivity let me explain a little about Rob Sherwoods numbers. Most people quote the 2 KHz blocking number, that comes with a couple of caveats. First, for the most part Rob measures 2 KHz blocking with a 500 Hz filter. That’s a CW filter. Sideband filters usually run 2.4 KHz plus. Unless you’re a CW op, this number is irrelevant. Here is what Rod Sherwood says, “I decided to sort the table on my website by close-in dynamic range at 2-kHz spacing. This was the “acid test” for CW contest / DX pile up operation.” He further quantifies his research with the following numbers. “What do you need in the way of close-in dynamic range? You want a number of at least 70 dB for SSB, and at least 80 dB for CW. A 10 dB safety factor would be nice, so that means you would prefer 80 dB for SSB and 90 dB for CW.” In the past I have compared the IC-7300 with the FTDX10 and the FT710 during a CW contest. What ever I could hear with one, I could hear with the other. The Yaesu’s had a little less ringing but I had no problem copying the signal from any of the radios.

What this means is either radio will serve the vast majority of operators well. Whatever your personal preference is, go for it. There are things I love about the FT710 and there are things I love about the IC-7300. I never feel at a disadvantage with either radio. I plan on keeping both.

Where do I go from here? That’s a good question. I don’t have anything in line to review. I have decided to take a step back from EmComm for a while. I’ve been doing a lot of digital lately and need to get back to the joys of CW. I also have a couple of QRP radios that need to be taken out and used. I still enjoy the smaller radios. I’ll take a big radio on a camping trips/Field Days and may take a little radio for a quick activation. Sometimes it’s nice to grab a small box or bag and go. I have some antennas I haven’t used in a while, I need to get them out.

Thanks for hanging with me. I appreciate your company. 73 de Scott

WGARS Spring Fling 2025

Today was the club’s semi-annual outing and this spring it was one of our old haunts, Cheaha State Park US-1037 in the fine state of Alabama. There are 3 things we as a club like to do, we like to eat, we like to socialize, and once in a while we talk on the radio.

As usual, food was in abundance.

We had several stations set up under the pavilion. QRM was held to a minimum. We had Xeigu G90’s, Tru-SDR, Icom IC-705, and my Yaesu FT-710. I set the radio up and turned it over to the club President John WD8LQT. John, like me is a CW op and I wanted his opinion of the FT-710. I didn’t have to twist his arm too hard. The setup was the radio feeding a Chameleon micro transformer with a 12’ whip and about a 20’ counterpoise. The radio was powered by a 20 amp-hour Bioenno battery and the paddles were a Begali Expedition.

Band conditions were poor and it took John most of the time at the park to get his 10 contacts. There were stops for eating and chatting. Early in the activation, I decided to change antennas to be sure we had an atmospheric issue and not an equipment one. I had my Diamond RHM-12 which recently proved itself to be a good performer. Once the switch was made and some searching through the bands, John started making contacts on 20 meters. I believe it was atmospherics and not the equipment. John got his 10 contacts and we called it good.

John’s comments about the FT-710 were quite favorable. Like any radio, there are pluses and minuses. In general he thought it was a very good radio for CW. There is more commentary from John on the YouTube video posted below. John did have one epic fail. The ear buds he was using which looked rather ancient finally gave up the ghost. I took it upon myself to intervene and unceremoniously threw them in the trash. John will thank me.

My review of the FT-710 is drawling to a close. I find that I like the radio. It performs well for its price point and has some features found on more expensive radios. It has its quirks as all radios do, but none that I find overly objectionable. I plan on keeping the radio and it has found a place among my field radios. I imagine the radio may make an appearance during this year’s Field Day.

FTDX10 or FT710

Yaesu came out with too fairly closely spec’d radios at different price points. The FTDX10 currently sells for ~$1,500 and if you add in the 300 Hz filter, another ~$175. The FT710 Field sells for ~$1,075. Roughly $500 less.

The FTDX10 is a hybrid radio with a down conversion receiver feeding into a Direct Digital Synthesizer (DDS). The FT710 is a SDR radio similar to the IC-7300. I owned an FTDX10 for about 18 months and I am on my second FT710, total ownership time is approximately 10 months. I had the first FT710 a couple of months after the initial release. It wasn’t working the way I expected it to so I traded. About 6 months ago, after reading some of the update material, I thought I would give it another go. My second FT710, this time the field version, is much improved. It is my current go to field radio. I plan on keeping this one. Having used both radios if I had to do it again which one would I pick?

I would pick the FT710. The FT710 has 90-95% of the performance of the FTDX10 for $500 less. In fact, I do not think one could tell the difference between the two in a side by side blind test. There is a caveat, the receiver architecture is different between the two radios and it requires a slightly different skill set. SDR radios like the FT710 basically run wide open all of the time. Keeping that in mind, in most cases it is better to run IPO or attenuation rather than preamp. I almost never run preamp on my FT710. What is nice about the FT710 is it gives you 3 levels of attenuation: 6dB, 12dB, and 18dB; a feature usually only found on higher end radios. In contrast, the IC-7300 only gives you one, 18dB.

The other control you should become familiar with is the RF gain. On a Yaesu, RF gain starts in the fully clockwise position. When there is a lot of noise, slowly turn the RF gain counter-clockwise until only the desired signal is heard. Coming from analog radios years ago, my brain is still a very good filter. I use digital noise reduction sparingly. I often keep it at level 2 or 3, enough to take the edge off.

Perhaps the most compelling reason to chose the FT710 over the FTDX10 besides the cost, is the ergonomics. I have large hands and fat fingers. The FTDX10 clustered its controls close together so I had to be careful when pushing a button or twisting a knob. Even so, I would bump the frequency dial and throw it off frequency. I have remarked that the controls on the FTDX10 were more suited for the lefthand. In fact when it was a part of my home station, it sat to the left side. With the FT710, the controls spaced further apart and are easy to get to even with my big mitts. This is a real benefit for a field radio. The position of the radio or the lighting conditions may not be optimal so ergonomics are important. I find the FT710 a joy to use in the field.

If you are a dyed-in-the-wool FTDX10 owner, this post is not for you. I wrote this for the amateur radio operator looking for their first HF radio, or maybe a seasoned operator looking to venture into the Yaesu family. This is also for those who have limited funds and are agonizing over which radio to get and should they sacrifice funds for the more expensive radio over something else they may need for the shack. The FTDX10 is a fine radio. Its Achilles’ Heel is its ergonomics. The FT710 is a fine radio in its own right. I believe it is 90-95% of what the FTDX10 is but for much less money. Of all the Yaesu radios I have owned over the past almost 30 years, the FT710 is the one I have been most happy with. YMMV de Scott

It’s Good to be SEEN

Saturday, 09 March 25, I made the two-hour trip over to Bessemer, AL to attend a SouthEast Emergency Network (SEEN) meeting. The meeting was to start preparation for an upcoming Field Training Exercise (FTX) in April. I was here to support my friend and SEEN founder Billy N4WXI.

Billy started SEEN a couple of years ago to serve his local area in case of a communications emergency using GMRS. It has since grown into a service covering the Gulf Coast States including Georgia. These are the States most affected by hurricanes. Hurricanes when they make landfall can cause extensive damage over wide areas. The focus of SEEN is to provide communications during the first few days of a disaster or until government agencies can recover their communications. SEEN is also affiliated with the American Radio Redoubt Operators Network (AmRRon). This affiliation will allow SEEN to pass messages from the southeast to AmRRon to anywhere in the USA.

SEEN primarily uses digital modes to pass traffic because it is quicker, more resilient to interference, and more accurate. Billy feels the main role of SEEN is to pass health and welfare traffic to connect families and friends inside and out of the disaster area. SEEN uses 3 apps/modes: FLdigi, JS8CALL, and VARAC. Right now, FLdigi is the heavy lifter, it has multiple modes and is used by many organizations. This allows cross group communications. The second is JS8CALL. JS8CALL is a slower but more robust and because of its excellent weak signal characteristics, it is used when nothing else will work. VARAC is the new kid on the block and has a lot of promise. This app uses VARA which is also used by Winlink. It has pretty good weak signal characteristics, but speed and automatic error correction are its strong points. A message sent through FLdigi using a mode like MFSK32 can take 5 minutes. Using JS8CALL can take 10 minutes or more. VARAC using VARA can send the same message in about 30 seconds. A good part of this meeting was spent getting folks up to speed on these modes. These are the ones that will be used during the upcoming FTX.

One of the topics talked about me sending Billy an intelligence brief from my mobile using VARAC on 40 meters. That story can be found here: KK4Z SEEN FTX 2024. The radio install can be found here: KK4Z mobile install.

As with any ham radio related meeting, the topic turned to equipment and gear. Some folks were thinking about using a QRP radio for the FTX. Both Billy and I recommended against it. There are good reasons not to and I will name a few: 1) digital modes have a high duty cycle when compared to SSB and CW. This causes the radio to heat up quicker and because QRP radios are small, there is not enough heatsink to mitigate the excess heat. The radios overheat and then automatically reduce power or shutdown. I have done this twice with two different QRP radios. They have their place, but not with EmComm. 2) Power. The primary purpose of EmComm is to get the message through, this is not a contest of how low you can go. You can always turn a QRO radio down but you can’t turn a QRP radio up. With a big radio like an IC-7300, I can run digital modes at 40 watts all day long and the radio will not even get warm.

Antennas. Again, the purpose is to get the message through. Put up the best antenna you can. Bigger is better. Your antenna in the field will not perform the same as your antenna at the home QTH. The only way you will know how your field system works is to take it out to the filed and use it. When I go on my trips, I use the same gear as I would for an actual deployment. I have 1,000’s of contacts from the field. I know my gear. A comment was made that big radios use more power than a QRP rig. True but that is easily resolved with a bigger battery. You need more juice to run that laptop anyhow. I did a test when I got home last night and checked a couple of my radios current usage at idle. My IC-705 drew 0.21 Amps, the IC-7300 drew 0.83 amps and the FT710 drew 1.28 amps. My main EmComm radio for the field is my 7300. Remember, you are most likely not going to move your EmComm gear far so weight/bulk is not a problem. You need the power and you need the heat dissipation.

To quote Leroy Jethro Gibbs “Grab you gear, let’s go”. Take your radios out to the field often. I try to get out 6-10 times a year to include both Field Days. Know your gear, know how it works. If you manage to get out, get at least 20 miles from the home QTH. That is the minimum distance that is too far to return home to get something you forgot. Learn to make do, improvise, adapt and overcome. Most of all have fun. I do a lot of Parks on the Air (POTA). POTA activators, know their gear because they get out and use it. Stay safe 73- Scott

Hamrs Pro

This past trip I was able to check out the new Hamrs Pro app. I must say I am impressed. I spent some time prior to my trip setting it up for a POTA activation. Here is my current setup:

Hamrs uses FLrig to interface the radio with the app. When the radio is connected, frequency, band, mode, and power is updated in the app. In addition, Hamrs Pro will set the RST to either 59 or 599 depending on the mode. Another nicety is when you add the POTA park number in “My Park” it will automatically add the Maidenhead Gridsquare to “My Grid”.

Tabbing is straight forward. It goes from left to right and top to bottom. In my set up I have received RST first since that is the first one I get and then a quick tab and I add mine. Time on is automatic. I always believed that computers should work for us and not the other way around. With Hamrs Pro, it does most of the heavy lifting for you.

Another place where Hamrs Pro shines is the POTA spots.

There is a lot of info on the page to include compass heading and distance. If you click on the RIG button, Hamrs Pro transfers the frequency and mode to your radio. If you click the Copy button, the information is copied into the log. Add RST, hit save and you’re done. Pretty slick.

So far the only improvement I can think of is using Hamrs Pro with FT8. I don’t see an easy way to interface Hamrs with WSJT. This is not a big deal. All I do is log FT8 contacts in ACLog export the log as an ADIF, and then import the ADIF into Hamrs. It is easier than it sounds. Another way might be to use the WSJT log function and import that into Hamrs Pro.

Hamrs Pro with a $2 a month subscription allows you to sync your logs across platforms. I have Hamrs Pro on my Mac, IOS, IPadOS, and Windows. As along as I have internet or WiFi, they sync. This is great because I mainly use Windows for radio stuff and Apple for everything else. I can create a log on my Evolve III or my iPhone, and when I get home I can upload the log to POTA on my Mac — easy peazy.

I have been using Hamrs on and off since the beginning. This is a hugh step –in the right direction. I can see this as becoming my go to logging app. A lot of thinking and work has gone into Hamrs Pro. I can only see it getting better. Good job Hamrs folks. de – Scott

Yaesu FT710 – Second Impression

Here is my first look at my second FT710. I will start with the settings I changed and then go over the list of issues I had with the first one. The first FT710 had the original firmware as it was new at the time. This one has several updates under its belt.

Settings/Changes

T710,Taped Power Cables every couple of inches to reduce tangles.
Added Anderson Power Poles to the power cable
Turned off 3DSS
Set waterfall span to 5K
Set waterfall speed to slow2
Set color to 6
Set level to +3.5 dB, peak to level 2 and contrast to level 14
Set tuner type to EXT
Set Tuner/Lin Port to Linear
Set keyer to Elekey B, repeat interval to 3 seconds, Weight to 2.7 and Pitch to 700Hz
QSK – on
Set MyCall to KK4Z and call time to 3 seconds
Set Mic gain to 60 and Processor level to 65
CW mode on
Meter Detector to Peak
Receive Audio SSB – Treble +3 Middle +5 Bass -2
Receive Audio CW Treble +3 Middle +1 Bass -3
Parametric Equalizer (processor on/off the same)
1. E1 – Freq 300 Bandwidth 10 level -3
2. E2 – Freq 1300 Bandwidth 2 level 10
3. E3 – Freq 2400 Bandwidth 1 level 10
Needs a 32gb (no larger) SD card. Scandisk Ultra SDHC UHS-I 32 GB works
Mouse. Seems the only wireless mouse you can use with the radio is a Logitech M310. It does not appear to be in production anymore. I had to buy a renewed one. I got the mouse working and I think it is a good addition to the radio. It does make changing parameters easier and if you click on a signal in the waterfall, the radio will QSY to that frequency. I wasn’t sure how I was going to like using a mouse, but I think I like it.

Here are the issues from the first radio:

Could not use LDG tuner with the radio — it was a surreptitious route to get a tuner to work. I started out with a different tuner, an LDG IT-100 which uses a different cable. I coupled the tuner with an LDG IC-108 cable. The cable is not listed as usable on the FT710. The other twist was setting the Tuner/Lin Port “Linear” instead of Ext Tuner. This little tidbit is not shared by Yaesu, I had to find it on an internet forum. To tune the antenna you push the tune button on the tuner (not on the radio) to get things going. This is where Icom shines. They have been using the same interface at least as far back as the IC-718 and the IC-706. A tuner I bought for my IC-706 MKIIG still works on my IC-7300 with the same cable and I can use the tune button on the radio. The other downside is you cannot use the FH-2 Remote pad when using the auto tuner as it uses the same port at the back of the radio. In addition, you cannot run an amplifier and an auto tuner at the same time. Icom has separate ports for the tuner and amplifier.
No Portable Zero Rails – I use rails on all of my portable radios. Portable Zero now makes rails for the FT710.
Could not use RT systems software – it took Yaesu until July 2023 to get the info to RT Systems. I have RT Systems software for almost all of my radios. RT systems software works fine now.
Auto Notch — I don’t remember auto notch working on the first radio I had. It works now.
Cannot edit/see QMB – another place where Icom shines. I can go into the memo pad (Icom’s QMB) and edit the entries.
RJ45 mic connecter instead of Foster (Icom)- Foster connectors are more durable than the RJ45.
Key clicks in the headphones using CW – They are still there but less pronounced. The CW is harsh sounding and can be fatiguing to listen to over long periods.
WSJT software would change modes when switching bands
Waterfall is not averaging like Kenwood’s or Icom’s. It has to be adjusted manually (and sometimes frequently)
Filter only has 2 selections vs 3 for the Icom. Narrow which only has predefined values and wide which is adjustable. The Icoms have 3 selections each fully adjustable. Icoms can also adjust the filter shape (soft or sharp. The FT710 has contour and APF. Contour is like a soft notch filter and APF boosts the center frequency like a CW signal. Icoms have dedicated controls on the front panel while the Yaesu has a mix of front panel controls and menu items.

Even with all of its quirks, I like the little radio. Yaesu appears to have fixed most of its problems, at least enough to make the radio fun. I still believe this radio compares well with the IC-7300 and either will serve you well. If I could only have one, I would still go with the Icom. The Icom has a lower noise floor, the settings (ergonomics) are better, and it hears as well as the Yaesu (at least in my side by side test). For CW again, the edge goes to Icom. However, the Yaesu has its pluses. The FT710 has a slightly better audio quality let’s say more fidelity but in CW the tone is more harsh than the Icom. The Yaesu has a better attenuator with 3-steps instead of one. With the Yaesu, you can transmit CW while in SSB mode. I like the filter window on the FT710. I can see how changing the filter affects the signal.

Later this week I have Portable Zero rails coming. They are pricy, but I find them very useful on my field radios. I also have a Maestro Evolve III coming which I will setup software for the FT710 on it. I hope to have everything ready for Winter Field Day.

I think a major difference between the IC-7300 and the FT710 is settings. Yaesu gives you settings on top of settings, while the Icom gives you what you need. If you like to tinker and tweak, the FT710 is your radio. If you want to get down and operate, then Icom is the way to go. Out of the box, I had to do far less setting up with the Icoms.

Compared to the FTDX10. I owned an FTDX10 for about 18 months. If I bought one today, the cost would be about $600 more than the FT710. I’m not sure the FTDX10 is that much better than the 710. My primary use for this radio is for the field. More to follow es 73 de Scott

Deja Vu all over again

The 2025 promises to be a better year. I am looking forward to being more radio-active. I am also looking forward to more blogging and more vlogging. I am hoping to undertake some long term reviews. I have two in mind. One is going to be a Maestro Evolve III laptop computer. I know a lot of hams use them so I thought I would give one a whirl. My other project is going to be another Yaesu FT710, this time the field version. I last owned one about a year and a half ago, I traded it off after a few months of use. The radio was going through some growing pains and was probably not ready for prime time. My general thoughts back then was the radio was a likable and fun radio and compared favorably to my IC-7300. I thought I would give it another look and a fair shake since it’s been through a few firmware updates since its release in 2022.

I am hoping this FT-710 is more polished than my first one. I can see at least two firmware updates since my last 710 and the manual has been updated. Hopefully Yaesu cured those early issues. I picked up the radio yesterday. I plan on using it as a field radio for POTA activations as well as for Winter Field Day and Field day with my club. In general the IC-7300 and the FT-710 are comparable, each with their pluses and minuses. Whichever brand you are married to, either radio will probably serve you equally well. One reason I got this radio is there are many members in my club that use Yaesu radios. Having familiarity with the Yaesu system allows me to help them with their radio problems.

My initial thoughts are similar to the ones I had a year and a half ago. It is a likable radio and it has a certain fun factor. I am going through my past blog posts and YouTube videos to make list of things I found with my first FT710 and see if they have been corrected. I will also post the settings I changed on the new radio to suit me.

I like big radios when I go camping or even on POTA day trips. I like having the controls I use handy and if band conditions get ugly, I can turn up the power. I normally run 20-25 watts for CW and digital. The rare times I am on SSB, I may go as high as 50 watts. Another plus with a big radio is I can run digital modes all day long and it will not overheat the radio. I do have a couple of QRP radios and I do take them out for a spin every now and again; but I can just as easily turn my big radio down to 5 watts. I am looking forward to using it in the upcoming Winter Field Day. 73 de Scott