FT-857 Jumpers
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Pitman-san,
Thanks for your comments. The webpage introduces MARS on the US model. What I want is to DeMOD MARS and set up a JA model. I found some photos of JA 857 jumpers talking about 7MHz FREQ extension (TX on 7.100-7.200). But, for some reasons, their default jumpers are different from one to the other. Maybe it is caused by the hardware release year so I would like to make sure which jumper affects to which FREQ on TX/RX or both. TU 73, // HIRO, JJ1FXF |
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Assuming the attachment makes it through this jumper sheet should give you a good idea how to start. From my understanding the JA radio have a different ROM chip so you won't be able to make it 100% JA mode.
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Leonard K. Pennock AD7AS Those who walk bravely through life, unafraid of loss or failure, find that they very rarely lose or fail. On 1/25/24 11:52 PM, HIRO, JJ1FXF wrote:
Dear FT-857 lovers, |
开云体育HI Leonard, ? Where can I get a high res of the jumper chart you sent here? The resolution is so low it is difficult to read, even when expanded. ? Regards, ? Tony VA7TF? VE7ACF ? ? From: Leonard K. Pennock
Sent: Friday, January 26, 2024 5:41 AM To: [email protected] Subject: Re: [FT-857] FT-857 Jumpers ? Assuming the attachment makes it through this jumper sheet should give you a good idea how to start.? From my understanding the JA radio have a different ROM chip so you won't be able to make it 100% JA mode. ? Leonard K. Pennock AD7AS ? Those who walk bravely through life, unafraid of loss or failure, find that they very rarely lose or fail. ? On 1/25/24 11:52 PM, HIRO, JJ1FXF wrote: > 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 > > > > > ? ? ? ? ? -- +++++++++++++++ Tony VA7TF? VE7ACF |
开云体育Phil, ? Can you post or send me the chart for the FT-857d? ? ? ? Regards, Tony F. ? From: Philip - K4PO
Sent: January 27, 2024 10:49 AM To: [email protected] Subject: Re: [FT-857] FT-857 Jumpers ? Please note this jumper chart is for the FT-897 and does not appear to apply to the FT-857D.? Review of this chart does not match what I have on file for my FT-857D, build date Jun 2004.? Regards, Phil? ? -- +++++++++++++++ Tony VA7TF? VE7ACF |
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Phil-san,
Yes, after a while I found the chart said it was for FT-897. However, it helped me to consider how the jumpers may affect to the FREQs on HF+50, 144 and 430 with VFO steps and repeater offsets. I have found an INFO on the net which says “Yaesu FT-857 Original Jumper Settings” which some of you have known already. It also says “Radio Type (Look on the Original Box)” that I didn’t understand at first glance. But when I look at my packing box of FT-857, the small labeling seal says “TYP:A2” under the “DST:USA”. However, some photos of original jumpers I found on the net were not compatible with any of listed jumper settings. :( More confusions. hihi BTW, my 2 cents, it seems J1004 and J1005 are just spares for the future use and currently all the models of FT-857 may leave them as open. Still considering how I can ReMOD those jumpers for JA compliance. TU 73, // HIRO, JJ1FXF |
HIRO, JJ1FXF
Thadius Pigman
Tony VA7TF, VE7ACF
