1. FT-857
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Japanese FT-857

 

Can a japanese version 857 be modified full tx coverage and 100w ?
I tried to open one, but it limited the power to 10w.
 
Regin, OY1R
 

Seems thats a no
 
 
Mick SA4MDN
 

Shortly after the FT-857 was introduced to North America, some enterprising individual(s) saw an opportunity to make a quick buck in America, they imported the Japanese FT-857 (these rigs were aimed at the beginner Japanese hams) numbers unknown, and sold them at a good discount to eager US hams. That is all I know, I would imagine that Vertex got hold of the US customs folks and the FCC and put a very quick stop to the importation of these rigs. I imagine that Yaesu was inundated with complaints that the rig only made 10W of RF and wanted them fixed under warranty, that would be how Yaesu found out about the scam.

John
VE7KKQ. 

On Mon, Oct 21, 2024 at 7:51 AM Michael Newbury via groups.io <michael.newbury=hotmail.com@groups.io> wrote:
 

A good post, John, and a timely warning for new hams surfing for online bargains.

My advice, based on experience, is to save money until new gear can be bought, and then bought from reputable American dealers or foreign dealers who have service facilities in the United States.

The same would hold true for hams in all countries with reputable dealers.

Thanks for the post.

73,
Kent
K9ZTV



On 10/21/2024 9:39 AM, John wrote:

Shortly after the FT-857 was introduced to North America, some enterprising individual(s) saw an opportunity to make a quick buck in America, they imported the Japanese FT-857 (these rigs were aimed at the beginner Japanese hams) numbers unknown, and sold them at a good discount to eager US hams. That is all I know, I would imagine that Vertex got hold of the US customs folks and the FCC and put a very quick stop to the importation of these rigs. I imagine that Yaesu was inundated with complaints that the rig only made 10W of RF and wanted them fixed under warranty, that would be how Yaesu found out about the scam.

John
VE7KKQ. 

On Mon, Oct 21, 2024 at 7:51 AM Michael Newbury via groups.io <michael.newbury=hotmail.com@groups.io> wrote:
Seems thats a no
 
 
Mick SA4MDN

Virus-free.www.avg.com

 

Wow,

 

All these years, and I never heard about that FT-857 scam.

 

I have just two thoughts:

 

  1. Japanese amateur radio domestic models have “out of band” transmit frequencies blocked at the CPU level, per Japanese law.  This is especially for VHF and above.  The frequencies are not restorable via diodes/jumpers without changing the CPU.
  2. Make certain the BROWN wire is not shorted to ground within the cabling, as this would put the radio in low power mode.

 

Otherwise, you may unfortunately have a QRP radio with limited frequency coverage

 

‘73 de Jim N2ZZ

 

From: FT-857@groups.io <FT-857@groups.io> On Behalf Of John
Sent: Monday, October 21, 2024 10:40 AM
To: FT-857@groups.io
Subject: Re: [FT-857] Japanese FT-857

 

Shortly after the FT-857 was introduced to North America, some enterprising individual(s) saw an opportunity to make a quick buck in America, they imported the Japanese FT-857 (these rigs were aimed at the beginner Japanese hams) numbers unknown, and sold them at a good discount to eager US hams. That is all I know, I would imagine that Vertex got hold of the US customs folks and the FCC and put a very quick stop to the importation of these rigs. I imagine that Yaesu was inundated with complaints that the rig only made 10W of RF and wanted them fixed under warranty, that would be how Yaesu found out about the scam.

 

John

VE7KKQ. 

 

On Mon, Oct 21, 2024 at 7:51 AM Michael Newbury via groups.io <michael.newbury=hotmail.com@groups.io> wrote:

Seems thats a no

 

 

Mick SA4MDN
 

I tried to open this radio for an om
The best/widest at 100w i managed is
1800-2000khz
3500-4000khz
7000-7500khz
10000-10500khz
14000-14500khz
18000-18500khz
21000-21500khz
24500-25000khz
28000-30000khz
Most of which is pretty useless for us hams, what he wanted was 60m and 11m, i have the 817 and 897, they are both for the EU marked and easily opened to 1.8 trough 30mhz
Anyways, thanks for the new input. (I suspected this, but since i tried the samething a few years back i was hoping someone had found some way around the japanese hardware.)

Regin, OY1R
 

Hi Regin,

 

Not sure why you’d say that it is pretty useless for us hams as it covers all the HF ham bands, apart from 60m. 11m is not a ham band to my understanding – at least it isn’t here in Australia although it used to be many decades ago.

 

As has been said before, the Japanese market radios are locked to the ham bands only and cannot be wide-banded further without replacing the processor chip as it is hard coded into it (by law in Japan). This has been known for many years.

 

73….Eric VK2VE.

 

From: FT-857@groups.io <FT-857@groups.io> On Behalf Of Regin, OY1R
Sent: Tuesday, 22 October 2024 06:49
To: FT-857@groups.io
Subject: Re: [FT-857] Japanese FT-857

 

I tried to open this radio for an om

The best/widest at 100w i managed is

1800-2000khz

3500-4000khz

7000-7500khz

10000-10500khz

14000-14500khz

18000-18500khz

21000-21500khz

24500-25000khz

28000-30000khz

Most of which is pretty useless for us hams, what he wanted was 60m and 11m, i have the 817 and 897, they are both for the EU marked and easily opened to 1.8 trough 30mhz

Anyways, thanks for the new input. (I suspected this, but since i tried the samething a few years back i was hoping someone had found some way around the japanese hardware.)


Regin, OY1R


Virus-free.www.avast.com
 

 
What i meant or maybe should phrase it different is that most of the expanded transmit frequency range is not particularly useful, like for example 18000-18068khz and 10000 to 10100khz etc.
 
Radio is ok, the owner was interested in 60 and 11 if possible, that i could not help with, but i did install a 500khz filter that he can borrow as his other rig has no filter and it's 3khz wide. so hopefully he'll get more pleasant usage of this ft857 with added filter :)

I think i got a bit nostalgic now, i brought my FT-817 back from the storage and put it in the bench, time for some qrp fun :P
My CW is MUCH better now then what it was when i last time used the ft817, mainly PSK31 and SSB back in 2010-2012/14.
 
Catch you on the bands
73
Regin, OY1R
 
 
 

Which jumper settings and/or pother modifications are needed to get this result?
 

If you have a Japanese version of the 857, there is noting you can do to get that to the US bandplan and the full 100 watt output.

Jeff K. Steinkamp (N7YG)
Tucson, AZ
Scud Missile Coordinates
N32.2319 W110.8477


------ Original Message ------
From "Jon Zane via groups.io" <zane.jon@...>
Date 11/3/2024 10:02:46
Subject Re: [FT-857] Japanese FT-857

Which jumper settings and/or pother modifications are needed to get this result?
 

I'm asking OY1R which jumper setting he used to get that exact result he reported.
 

I have a JA FT-857M (50W) and a US FT-857D (100W).

The hidden service menu can be turned on with the US-857 only, not with the JA-857 so I cannot change the RF output of JA-857.

And both US-857 and JA-857 jumpers on the main circuit boards look the same but what happens when modding them are different.

I suppose the meaning of each jumper will vary by the embedded CPU programs or the regions and the models of the main circuit board, but I'm not sure.

// HIRO, JJ1FXF

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