Dear FT-857 lovers,
I've been looking for the INFO of 857 jumpers which is often referred as MARS mod.
My FT-857 seems modified as MARS and I'd like to mod it back to comply with JA regulation.
Any INFO or pointer that explains each jumper of J1001-1009?
Thanks in advance.
73/88,
// HIRO, JJ1FXF
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ZL1CVD OM,
TNX for your comment.
I found that the last page of 2018 doc says 2017 and so I misunderstood.
Now I have found the Technical Supplement of 2003, 2005, 2007, and 2018.
Thank you, all who replied to me.
Have a good day.
73/88,
// HIRO, JJ1FXF
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FT-897D weird receive problem
I realize this is an 857 forum, but since the 897 and 857 and very
similar, I thought I'd try asking here. (Is there an 897 forum?)
The other night while on 2m, upon UN-keying, the radio went into
some sort of "hyper-sensitive" receive mode.? Lots of squelch
breaking sound and S meter movement ranging over the whole
scale.? Happens on both antenna or dummy load.
The only way to get normal receive back is by recycling main power off
then on again.? But just a quick key and release of the mic and the problem
re-appears.
This is happening only on 2m and 70cm.
All other functions of the radio seem normal.
No mods have ever been done. Radio is fully factory stock.
Any ideas are appreciated...
Mike
KD7VRG
Tucson, AZ
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If you can, always refer to the 2018 version. It has all revisions of PCBs used in this model and from memory there was some revised alignment ? Been a long long time since I serviced these for DSE so I may be wrong. 73 de ZL1CVD
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John-san,
Thanks for your comments.
Yes, the "075 RF POWER SET" of the Standard Menu is to control the percentage of the "*-MAX" of the Service Menu.
Could you guess what the "*-MID2/MID1/MIN" will affect?
// HIRO, JJ1FXF
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On 2024.01.23 02:20, HIRO, JJ1FXF wrote: I am reducing FT-857D MAX RF Power to 50W by the Service Menu for JA¡¯s mobile station application.
It would be very much appreciated if someone could answer my following questions.
1. For what do the MID2, MID1, MIN work? snip Thanks in advance.
73/88,
// HIRO, JJ1FXF Hullo Hiro, These Service Menu settings are published under the headling "RF Power Adjustment." My best guess as to how they work is: 024 - 039 are to calibrate, or set in some fashion, points at the frequencies listed so the RF power level operation by the operator may be relatively accurate across the range MF/HF/50 MHz. 040 - 044 similarly perform a calibration across the 144 and 432 MHz range. In other words a way of calibrating or ensuring that the general operator/operating menu setting 075 RF POWER SET works across those ranges. i.e. In many regions, 075 reads from: MF/HF 0 - 100 W; 144 MHz 0 - 50 W; and 432 MHz 0 - 20 W. Maximum will be lower in Japan, and possibly another area. 73, John -- John D Erskine VE7MHI VA7OTC CN88hk VA7RCN Victoria, B.C.
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Thanks to both Alex-san and Kent-san.
The exact "Yaesu FT-857D Technical Supplement - Page Alignment-10" is on the 2017 (not 2018?) version.
But the content seems the same as Page #20 of the 2003 version.
TU 73,
// HIRO, JJ1FXF
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Both worked for me although Brian's is
a newer revision (2018 versus 2003).
73,
Kent
K9ZTV
On 1/23/2024 5:46 PM, Alex Sentana via
groups.io wrote:
toggle quoted message
Show quoted text
For
some reason Brian¡¯s link didn¡¯t work for me but I found it
in the Internet Archive page.
?
?
73
de Alex VK2PIR
?
?
On Tuesday,
January 23, 2024 at 03:24:54 PM MST, HIRO, JJ1FXF <jj1fxf@...>
wrote:
Thanks for
introducing a document I haven¡¯t heard about.
I still cannot find the ¡°FT-857D Technical
Supplement¡± manual but will try finding it and read
the page carefully.
TU!
// HIRO, JJ1FXF
|
For some reason Brian¡¯s link didn¡¯t work for me but I found it in the Internet Archive page. ?
? 73 de Alex VK2PIR ?
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Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of pth@...
Sent: Wednesday, 24 January 2024 9:46 AM
To: [email protected]
Subject: Re: [FT-857] FT-857D RF Power Mod? On Tuesday, January 23, 2024 at 03:24:54 PM MST, HIRO, JJ1FXF <jj1fxf@...> wrote: Thanks for introducing a document I haven¡¯t heard about.
I still cannot find the ¡°FT-857D Technical Supplement¡± manual but will try finding it and read the page carefully.
TU!
// HIRO, JJ1FXF
|
Your Welcome
Let me know if it helps.
Brian ? ? N7BMH
On Tuesday, January 23, 2024 at 03:53:33 PM MST, HIRO, JJ1FXF <jj1fxf@...> wrote:
Brian-san,
Thank for your info.
I¡¯m on a train commuting to my office and the access to the net seems jammed and the download is very slow.
I¡¯ll get it when I¡¯m home later.
Thank you.
73,
// HIRO, JJ1FXF
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Brian-san,
Thank for your info.
I¡¯m on a train commuting to my office and the access to the net seems jammed and the download is very slow.
I¡¯ll get it when I¡¯m home later.
Thank you.
73,
// HIRO, JJ1FXF
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Here You Go
Tech. supp.
Brian ? ?N7BMH
On Tuesday, January 23, 2024 at 03:24:54 PM MST, HIRO, JJ1FXF <jj1fxf@...> wrote:
Thanks for introducing a document I haven¡¯t heard about.
I still cannot find the ¡°FT-857D Technical Supplement¡± manual but will try finding it and read the page carefully.
TU!
// HIRO, JJ1FXF
|
Thanks for introducing a document I haven¡¯t heard about.
I still cannot find the ¡°FT-857D Technical Supplement¡± manual but will try finding it and read the page carefully.
TU!
// HIRO, JJ1FXF
|
Get yourself a copy of the Yaesu FT-857D Technical Supplement - Page Alignment-10 covers this.?
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I am reducing FT-857D MAX RF Power to 50W by the Service Menu for JA¡¯s mobile station application.
It would be very much appreciated if someone could answer my following questions.
1. For what do the MID2, MID1, MIN work?
2. Are there any other values of the Service Menu that I need to change when changing the RF power?
Thanks in advance.
73/88,
// HIRO, JJ1FXF
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Re: Won¡¯t turn on but relay clicks
If you are using the Yaesu original power cable, check the connector, remove the connection and reconnect?it firmly. At times the connector also gave me problems. VU2TE
On Tue, Jan 23, 2024 at 6:51?AM Eric S < Esh03603@...> wrote: Everything is unplugged from the radio except the head (used both the long and original cables) with no positive result. The relay clicks and nothing until I hit the power button or plug in power again.?
The power supply is powering my Yaesu FT DX10 without any issues.?
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Re: Won¡¯t turn on but relay clicks
My 857D turns on but then the relay clicks and it cycles on & off until I disconnect the power. Only way to keep it on is to clone then reprogram with rt systems then it will run with no problems.
Brian
On Monday, January 22, 2024 at 06:21:08 PM MST, Eric S <esh03603@...> wrote:
Everything is unplugged from the radio except the head (used both the long and original cables) with no positive result. The relay clicks and nothing until I hit the power button or plug in power again.?
The power supply is powering my Yaesu FT DX10 without any issues.?
|
Re: Won¡¯t turn on but relay clicks
Everything is unplugged from the radio except the head (used both the long and original cables) with no positive result. The relay clicks and nothing until I hit the power button or plug in power again.?
The power supply is powering my Yaesu FT DX10 without any issues.?
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Re: CAT Control and Amplifier use Simultaneously
The FT-857D has an undocumented CAT control set up through the microphone jack. If you check the manual for the Microphone jack setting in memory 59 you will find that the choices are NOR/RMT/CAT. When set to the CAT function the CAT connection can be made through the Microphone jack. I've done this and it does work. Search for FT-857D MIC CAT. I know that I had to build a level converter but I don't remember why. It might have been that the level produced by the computer was not correct for the Yaesu control function. I was able to use the microphone while I was using the CAT control through the RJ-45MIC jack while using the rear port to control an antenna coupler. Connection that I used was a "Oxsubor RJ45 Splitter Adapter 1 to 2 Ethernet Coupler <>." A short Ethernet jumper cable, connects the adapter to the microphone jack, plug the microphone into one of the 2 adapter twin ports, then connect the CAT cord to the other of the 2 adapter twin ports. Since none of the audio pins is shared with a? CAT pin both will function at the same time.
Tom Horne W3TDH
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Re: Compact AC Power Supply for 857D?
I agree.? I used to take my HPS1A with my 857 as carry-on luggage on overseas trips. I don't know if they're still available.
73 ? ? Darrel aa7fv.
On Mon, Jan 22, 2024, 02:21 Giuseppe Marullo[iw2jww] < giuseppe@...> wrote:
Once upon a time the champion was the Gammaresearch HPS1A:
AFAIK this is(was?) the most compact PSU for an 100W SSB/CW HF
Radio.
Beware: looking for it, their site no longer works, it seems gone
for good.
Wondering if something else took its place, sure it was tiny (not
for everyone, still interesting concept).
Giuseppe Marullo
IW2JWW - JN45RQ
_._,_
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HIRO, JJ1FXF
Chris, ZL1CVD
John D Erskine VE7MHI VA7OTC
Tom Horne