Re: FT847 FAN replacement ...
Try these for a start
Ravi/M0RVI
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On Fri, 11 Feb 2022 at 12:10, on6ab <bruno.beckers@...> wrote:
A metaphorical comparison:
Suppose one would consider the complete Internet and calculate that its total capacity is 100x.
Then suppose he subtracts all posts about the "FT847 Fan issues"
What he then got left (as calculated by a very highly regarded American University) is 49,53x
;-)
Op vr 11 feb. 2022 om 10:45 schreef Frank <hb9oab@...>:
Where can I find a replacement fan for the FT847 and how to do it?
it got very loud as soon as I turn on the transceiver!
Thanks
73
--
I'm here to add more value to the world than I'm using up.
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Re: FT847 FAN replacement ...
Hi Greg,?
there are two fans in the 847. The one on the rear panel runs continuously. The larger internal fan only becomes active in TX. Neither of them have any form of temperature control.
Most of the noise from the rear fan comes from the fact it blows air against a circuit board. If the fan is unscrewed from the radio, it becomes much quieter.?
One thing to note. The internal fan blows against the rear of front panel, and any dust tends to accumulate there. For the benefit of all owners, it is worth taking the cases off and? checking, and blowing any dust out. I have seen one with a 1/2" carpet of dust in front of the fan.?
?
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Re: FT847 FAN replacement ...
As for my FT-847, I put a resistor in series with both fans to quiet them down. About 50 ohms if I remember right. Never had a problem and it's much quieter.
There was a discussion on the group about the fans quite some time ago. I saved the info - here are some of the notes: Perhaps you will find it useful.
A friend of mine found a slow speed fan that moves just about as much air but does it with much less noise. Specs are as follows:
Both fans size 40mm x 40mm.
Original fan: UC Fan; F412R-12MB-32; DC 12V; COPAL Co. LTD, Japan; Made in Malaysia; 5400 rpm; 0.06A; 1 ball bearing and one sleeve bearing; 0.15 cubic meter/min (5.3 cfm); noise 23 dB(A).
Replacement fan: Mini Kaze SY 124010L; 3500 rpm; 0.06A; sleeve bearings; 4.11 cfm; noise 14 dB(A). [Search for it on Amazon]
Installing the new fan involved only cutting off the plug supplied with the fan and splicing in the plug provided with the original fan.
I bought my fans from Amazon, but they seem pretty common for PC’s, so they may be available in your area locally too.
The big one or front is 60x60x25 (mm) 12 VDC and the rear one is 40x40x10 (mm) 12 VDC. They were about $10 each.
Be sure to look for 6 bladed fans with precision ball bearings. Also anything listed as “quiet” runs with a slower RPM and that is fine. I do lots of satellite work and have tested the rig running for days and my measurements with a digital thermometer indicated it maintained the ambient room temperature. For installation wiring, I pulled the sticker off the new and original fans and simply moved the radio’s wiring cable to the new fans, then re-applied the round sticker back on the fan.
Here’s some specs from one of the fans:
- Fan speed: Old: 5400 rpm; New: 3500 rpm
- Fan noise: Old: 23 dB; New: 14 dB
- Air flow rate: Old: 5.3 cfm; New: 4.11 cfm.
73, Richard AG5M
On Friday, February 11, 2022, 09:49:16 AM PST, Greg D <ko6th.greg@...> wrote:
Is the fan itself making an unusual noise, or is it just on full-speed?? It should come on at low speed (fairly quiet) whenever the radio is on.? The fan in my 767GX is stuck on full (and noisy as a result), but I presume it's the radio's fan control circuitry that is at fault, not the fan itself.? I haven't had a chance to dig into the rig to track it down further. Greg? KO6TH Frank wrote:
Where can I find a replacement fan for the FT847 and how to do it?
it got very loud as soon as I turn on the transceiver!
Thanks
73
|
Re: FT847 FAN replacement ...
Is the fan itself making an unusual noise, or is it just on
full-speed?? It should come on at low speed (fairly quiet) whenever
the radio is on.? The fan in my 767GX is stuck on full (and noisy as
a result), but I presume it's the radio's fan control circuitry that
is at fault, not the fan itself.? I haven't had a chance to dig into
the rig to track it down further.
Greg? KO6TH
Frank wrote:
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Where can I find a replacement fan for the FT847 and how to do it?
it got very loud as soon as I turn on the transceiver!
Thanks
73
|
Re: FT847 FAN replacement ...
I have fans in my collection of spare parts.? This is of no use to you at all, because I am in UK, and you could be in Outer Mongolia for all I know. "Frank" does not give a clue to your location.? Take it out, clean it, and put it back in with a bit of thin foam over it.? The fans are generally noisy due to what the air is hitting, not the fan itself. If it is the fan, clean or replace. 40mm x 40mm.?
On Fri, 11 Feb 2022, 09:45 Frank, < hb9oab@...> wrote: Where can I find a replacement fan for the FT847 and how to do it?
it got very loud as soon as I turn on the transceiver!
Thanks
73
|
Re: FT847 FAN replacement ...
A metaphorical comparison: Suppose one would consider the complete Internet and calculate that its total capacity is 100x. Then suppose he subtracts all posts about the "FT847 Fan issues" What he then got left (as calculated by a very highly regarded American University) is 49,53x
;-) Op vr 11 feb. 2022 om 10:45 schreef Frank < hb9oab@...>:
Where can I find a replacement fan for the FT847 and how to do it?
it got very loud as soon as I turn on the transceiver!
Thanks
73
|
FT847 FAN replacement ...
Where can I find a replacement fan for the FT847 and how to do it?
it got very loud as soon as I turn on the transceiver!
Thanks
73
|
Re: CAT - Control - Yet another post
Hi Ravi, you are right about the serial number coding. Only, a number starting with a "4" is not older than one starting with an "8" as the production started in 1998 and "8" therefore was the first production year. So, the sequence is (199)8,(199)9,(200)0,(200)1,(200)2,(200)3,(200)4 and finally the year 2005.
Maybe it is easier to first get the serial data working with a simple RS232 link to a normal PC running WSJT-X or something. If that works, you can tackle the RigPi problem with more confidence.
Hi, Douglas, Bruno
I've used a Serial to USB cable to connect the rig to the Raspberry Pi
and the laptop. In both cases, the 'CAT' comes up on the rig, but
programs fail to complete the connection.
The Serial number that I made reference to was from a post:
"...Yaesu appears to use the following format for serial numbers on their
amateur products:
Year of manufacture-Month of manufacture-Production Run-Individual Unit
number, where the month of manufacture is offset by 2, so "C" means January,
"D" means February, "E" means March, and so forth.
Example: 8G051234 = 1998, May (fifth month, or "G"), Production Run 05, unit
#1234 in this run.
One key serial number range is 8G05. This seems to be the point at which
Yaesu had corrected the bi-directional CAT issue and made some other
improvements. This version was made in May 1998. Later serial numbers (e.g.,
8L09nnnn) all seem to have incorporated the earlier improvements plus new
ones...."
That would mean that the port was unidirectional prior to this, my
serial number is "4M950027", hence I was wondering what data is? that
the rig was sending back to the CommsTest program when tuning across a
band.
Thanks.
Ravi
On Thu, 10 Feb 2022 at 00:45, on6ab <bruno.beckers@...> wrote:
>
> Hi Ravi,
>
> What is there unfortunate about your serial number?
> As far as I can tell, your FT847 is a november 2004 model which makes it one of the last ones (2005) produced.
>
> 73, Bruno
>
> Op do 10 feb. 2022 om 00:04 schreef Ravi Miranda <ravimiranda@...>:
>>
>> Hi,
>>
>> I have been trying to connect my FT-847 to my RigPi. After a few unsuccessful attempts (many), I then tried to use flrig via a USB (CH340), CAT-847, FTBCAT and FTBASICMMO.
>>
>> In some cases, the 'CAT' symbol appeared on the rig, but the radio failed to connect. I've read the posts on the serial number saga and unfortunately my serial number is 4M950027.
>>
>> Anyway, while trying out the programs above, I found something called CommsTester and this allowed me to 'see' the incoming data while tuning the rig.This is what is see:
>>
>> CommTest Version 1.1.8
>> Received FF00 on COM 5
>> Received 20FE00 on COM 5
>> Received 20FA00 on COM 5
>> Received 20FE00 on COM 5
>> Received 20FA00 on COM 5
>> Received 20F600 on COM 5
>> Received 20F200 on COM 5
>> Received 20EE00 on COM 5
>> Received 20EA00 on COM 5
>> Received 20E600 on COM 5
>> Received 20E200 on COM 5
>>
>> I haven't been able to decode the data yet, but would this kind of patch work? See
>> See: Mon Jun 9 23:09:52 CDT 2014 [CC-USB232 ]
>>
>> Yaesu have just mentioned that they do not support the firmware update at present. Are there any other avenues open for me? Many thanks
>> Ravi
>>
>>
>>
>
--
I'm here to add more value to the world than I'm using up.
|
Re: CAT - Control - Yet another post
Hi, Douglas, Bruno
I've used a Serial to USB cable to connect the rig to the Raspberry Pi
and the laptop. In both cases, the 'CAT' comes up on the rig, but
programs fail to complete the connection.
The Serial number that I made reference to was from a post:
"...Yaesu appears to use the following format for serial numbers on their
amateur products:
Year of manufacture-Month of manufacture-Production Run-Individual Unit
number, where the month of manufacture is offset by 2, so "C" means January,
"D" means February, "E" means March, and so forth.
Example: 8G051234 = 1998, May (fifth month, or "G"), Production Run 05, unit
#1234 in this run.
One key serial number range is 8G05. This seems to be the point at which
Yaesu had corrected the bi-directional CAT issue and made some other
improvements. This version was made in May 1998. Later serial numbers (e.g.,
8L09nnnn) all seem to have incorporated the earlier improvements plus new
ones...."
That would mean that the port was unidirectional prior to this, my
serial number is "4M950027", hence I was wondering what data is that
the rig was sending back to the CommsTest program when tuning across a
band.
Thanks.
Ravi
toggle quoted message
Show quoted text
On Thu, 10 Feb 2022 at 00:45, on6ab <bruno.beckers@...> wrote:
Hi Ravi,
What is there unfortunate about your serial number?
As far as I can tell, your FT847 is a november 2004 model which makes it one of the last ones (2005) produced.
73, Bruno
Op do 10 feb. 2022 om 00:04 schreef Ravi Miranda <ravimiranda@...>:
Hi,
I have been trying to connect my FT-847 to my RigPi. After a few unsuccessful attempts (many), I then tried to use flrig via a USB (CH340), CAT-847, FTBCAT and FTBASICMMO.
In some cases, the 'CAT' symbol appeared on the rig, but the radio failed to connect. I've read the posts on the serial number saga and unfortunately my serial number is 4M950027.
Anyway, while trying out the programs above, I found something called CommsTester and this allowed me to 'see' the incoming data while tuning the rig.This is what is see:
CommTest Version 1.1.8
Received FF00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20F600 on COM 5
Received 20F200 on COM 5
Received 20EE00 on COM 5
Received 20EA00 on COM 5
Received 20E600 on COM 5
Received 20E200 on COM 5
I haven't been able to decode the data yet, but would this kind of patch work? See
See: Mon Jun 9 23:09:52 CDT 2014 [CC-USB232 ]
Yaesu have just mentioned that they do not support the firmware update at present. Are there any other avenues open for me? Many thanks
Ravi
--
I'm here to add more value to the world than I'm using up.
|
Re: CAT - Control - Yet another post
Hi Ravi,
What is there unfortunate about your serial number? As far as I can tell, your FT847 is a november 2004 model which makes it one of the last ones (2005) produced.
73, Bruno
Hi,?
I have been trying to connect my FT-847 to my RigPi. After a few unsuccessful attempts (many), I then tried to use flrig via a USB (CH340), CAT-847, FTBCAT and FTBASICMMO.
In some cases, the 'CAT' symbol appeared on the rig, but the radio failed to connect. I've read the posts on the serial number saga and unfortunately my serial number is 4M950027.?
Anyway, while trying out the programs above, I found something called CommsTester and this allowed me to 'see' the incoming data while tuning the rig.This is what is see:
CommTest Version 1.1.8
Received FF00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20F600 on COM 5
Received 20F200 on COM 5
Received 20EE00 on COM 5
Received 20EA00 on COM 5
Received 20E600 on COM 5
Received 20E200 on COM 5
I haven't been able to decode the data yet, but would this kind of patch work? See?
See:?Mon Jun 9 23:09:52 CDT 2014 [CC-USB232?]
Yaesu have just mentioned that they do not support the firmware update at present. Are there any other avenues open for me? Many thanks
Ravi
|
Re: CAT - Control - Yet another post
I know that this is an obvious question, but are you using a null
modem cable to connect from the PC to radio?
I've been using my Ft-847 for 2-3 years with a null modem cable
on HRD and have had no problems.
I let the computer boot up, turn on the radio, then open HRD. No
problem.
Good luck.
Douglas VE3FFR
On 2/9/2022 5:49 PM, Ravi Miranda
wrote:
Hi,?
I have been trying to connect my FT-847 to my RigPi. After a few
unsuccessful attempts (many), I then tried to use flrig via a USB
(CH340), CAT-847, FTBCAT and FTBASICMMO.
In some cases, the 'CAT' symbol appeared on the rig, but the radio
failed to connect. I've read the posts on the serial number saga
and unfortunately my serial number is 4M950027.?
Anyway, while trying out the programs above, I found something
called CommsTester and this allowed me to 'see' the incoming data
while tuning the rig.This is what is see:
CommTest Version 1.1.8
Received FF00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20F600 on COM 5
Received 20F200 on COM 5
Received 20EE00 on COM 5
Received 20EA00 on COM 5
Received 20E600 on COM 5
Received 20E200 on COM 5
I haven't been able to decode the data yet, but would this
kind of patch work? See?
See:?Mon Jun 9 23:09:52 CDT 2014 [CC-USB232?]
Yaesu have just mentioned that they do not support the
firmware update at present. Are there any other avenues open for
me? Many thanks
Ravi
--
73
Douglas Richards VE3FFR
ve3ffr@...
|
CAT - Control - Yet another post
Hi,? I have been trying to connect my FT-847 to my RigPi. After a few unsuccessful attempts (many), I then tried to use flrig via a USB (CH340), CAT-847, FTBCAT and FTBASICMMO. In some cases, the 'CAT' symbol appeared on the rig, but the radio failed to connect. I've read the posts on the serial number saga and unfortunately my serial number is 4M950027.? Anyway, while trying out the programs above, I found something called CommsTester and this allowed me to 'see' the incoming data while tuning the rig.This is what is see:
CommTest Version 1.1.8
Received FF00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20FE00 on COM 5
Received 20FA00 on COM 5
Received 20F600 on COM 5
Received 20F200 on COM 5
Received 20EE00 on COM 5
Received 20EA00 on COM 5
Received 20E600 on COM 5
Received 20E200 on COM 5
I haven't been able to decode the data yet, but would this kind of patch work? See?
See:?Mon Jun 9 23:09:52 CDT 2014 [CC-USB232?]
Yaesu have just mentioned that they do not support the firmware update at present. Are there any other avenues open for me? Many thanks
Ravi
|
Re: 60 Meter Transmit Mod Info Wanted
might change out the memory battery while in there
since the memory will get wiped
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Re: 60 Meter Transmit Mod Info Wanted
the HF mod it self looks pretty simple??
since the rig has the AK emergency frequency in the firmware
I am supposing that it must have? the band pass filters in place to cover 60M??
or are we going to cook relays and the finals ?
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Re: FT847 calibrate the V / U frequency
#tip
Hi Frank
I used the TC1001 adjustment several years ago.? No big deal once you find TC1001.? I my case I was off about 1700 hz on 432.? Got it alot close but without the dropper test equipment, can't say exactly. Couple of hints.? Make sure the Ft847 is fully warned up as there is a slight drift from a cold start.? Can't remember exactly where the TC control is located but remember you remove the bottom cover to access.? Think it near the front, but not sure.?
73,
Tom K6EU
On Sun, Jan 30, 2022 at 1:41 PM Frank < hb9oab@...> wrote: Has anyone tried the "simple" tips of the TC1001 described?
Any other method?
73
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60 Meter Transmit Mod Info Wanted
Hi folks, I just found this group and am a newbie to it.
I have owned an FT-847 since new from 1999 and would like to know how to open the transmit for 60 Meters. As you know, 60 M was unavailable for use back then unless you were authorized for MARS/CAP, but the FCC has opened up this 5 MHz band in 2003 or 2004 for amateur use per the band plan.
I have seen several mods that seem different from each other. Does anyone have a known reliable mod for a U.S. FT-847?
Thanks in advance,
Mark/AE1MS
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Re: FT847 calibrate the V / U frequency
#tip
Has anyone tried the "simple" tips of the TC1001 described?
Any other method?
73
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Re: FT847 calibrate the V / U frequency
#tip
Yes 250Hz are few but still too many ...
Has anyone used the system described here or knows if it can produce problems, if there are other solutions or if this is the solution?
?
It doesn't seem that complicated with the right gear.
I have read about this solution on several sites, but before doing so I ask for more information.
73
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Re: FT847 calibrate the V / U frequency
#tip
Yes, of course it is. ? The adjustment is very touchy and if you are not careful or you will make things worse. ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Micky Corrow
Sent: Saturday, January 22, 2022 12:08 PM
To: [email protected]
Subject: Re: [YaesuFT847] FT847 calibrate the V / U frequency #tip? Is the adjustment procedure detailed in the Technical Reference (Service Manual)? Micky K1XH
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Re: FT847 calibrate the V / U frequency
#tip
Is the adjustment procedure detailed in the Technical Reference (Service Manual)?
Micky K1XH
?
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On 2022-01-22 11:42 AM, Omni wrote:
Your FT-847 is actually in spec.? Per the manual the frequency accuracy for the 847 is at best 2 PPM.? That translates to +/- 870 Hz at the center of the 70cm band, which is 435 MHz.? ?If you want to try and reduce the frequency error you will have to adjust the Reference Oscillator, which will take a very accurate frequency counter that can resolve down to 1 Hz at the reference frequency of 45.250 MHz.? An alternate method would be to Zero Beat the Reference Oscillator against WWV, but that might be a little less accurate.
?
?
From: [email protected] [mailto:[email protected]] On Behalf Of Frank
Sent: Saturday, January 22, 2022 4:57 AM
To: [email protected]
Subject: [YaesuFT847] FT847 calibrate the V / U frequency #tip
?
HI all
With the FT847 in VHF and UHF I have verified that they are off frequency of + 250Hz.
Does anyone know where in the radio I find and how can I correctly calibrate the right frequency?
73
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Andy Bosworth
Richard AG5M
Frank