has anyone done a carrier point alignment on the 707/,its vr 3001 and tc 3004 adjustments on the af board,i am having distorted tx audio reports,is there an easy way to adjust?
|
Re: Yaesu FT450 ribbon cable fix
The little ribbon keeper tabs are add ons to the socket.
So if you can send a picture we can identify the socket size and type and find a matching socket to take the keeper tab off.
|
Re: Yaesu FT450 ribbon cable fix
Will have to do that when I get home later today.? Are we allowed to attach files to messages in this group?
73 John AF5CC
toggle quoted message
Show quoted text
how about some pictures?
On 2/14/2025 2:43 PM, John Geiger AF5CC
via groups.io wrote:
n an unfortunate set of events, I managed to pull out the
ribbon cable which joins the head to the body of the
transceiver, on the body of the transceiver end.? While trying
to reseat it, the plastic bar that holds it in place broke.?
So I am guessing that the jack will need to be replaced.? Does
anyone on the list have experience with this type of repair??
Is it going to be very difficult/time consuming/expensive?
?
Any advice would be appreciated.
?
73 John AF5CC
|
Re: Yaesu FT450 ribbon cable fix
how about some pictures?
On 2/14/2025 2:43 PM, John Geiger AF5CC
via groups.io wrote:
toggle quoted message
Show quoted text
n an unfortunate set of events, I managed to pull out the
ribbon cable which joins the head to the body of the
transceiver, on the body of the transceiver end.? While trying
to reseat it, the plastic bar that holds it in place broke.?
So I am guessing that the jack will need to be replaced.? Does
anyone on the list have experience with this type of repair??
Is it going to be very difficult/time consuming/expensive?
?
Any advice would be appreciated.
?
73 John AF5CC
|
Yaesu FT450 ribbon cable fix
n an unfortunate set of events, I managed to pull out the ribbon cable which joins the head to the body of the transceiver, on the body of the transceiver end.? While trying to reseat it, the plastic bar that holds it in place broke.? So I am guessing that the jack will need to be replaced.? Does anyone on the list have experience with this type of repair?? Is it going to be very difficult/time consuming/expensive?
?
Any advice would be appreciated.
?
73 John AF5CC
|
I have for sale the original Yaesu MH-31 hand microphone with the RJ45 connector on it, which is the stock mic for the FT450, FT817, FT857, FT897, FT891 and quite a few other Yaesu radios.? Works fine, rubber on the cord is fine also.? These sell new for $45 plus tax and shipping, I am asking $30 shipped and can take paypal/check/MO.
?
73 John AF5CC
|
Re: Yaesu FT450 final transistor issues?
I have had two and still have one 450, never had a problem with the finials.
Troy
ke4ska
|
Re: Full Duty Cycle radios
I have used an FT-950, FTDX-3000, and FTDX-101D running SSTV, AM, and RTTY at full power with no issues. AM ran with a 25-watt carrier. If I am running a contest, I use an amplifier even if low power (100 or 150 watts) to keep the transceiver cool. The FTDX-101D has a setting to show transmitter temperature. Even running high duty cycles at 100 watts, the internal fan keeps it below 45C. I had an Icom IC-7610 for a while (not any more), and it worked OK for high duty cycle modes. FT-8 is a 43% duty cycle.?
?
Carl? KB7AZ?
|
Re: Full Duty Cycle radios
So, how would one know if there was a problem with the finals?? Is there a test to see if they are OK?
?
toggle quoted message
Show quoted text
From: Yaesu-Amateur-Radio@groups.io <Yaesu-Amateur-Radio@groups.io>
On Behalf Of Larry Patten via groups.io
Sent: Tuesday, January 28, 2025 6:00 PM
To: Yaesu-Amateur-Radio@groups.io
Cc: Yaesu-Amateur-Radio@groups.io
Subject: Re: [Yaesu-Amateur-Radio] Full Duty Cycle radios
?
The way I look at it is it is not about specs it is about heat. ?That is why I love the temperature meter on the Ftdx101mp. ?I think most of the recent radios from Yaesu have that as part of the meter. ? Just turn on the temperature meter
and watch what happens with the temperature of the final. ?Keep that within specs and you will be fine. ?I do the same with my Flex 6400 although in that case I had to add on some software that puts a meter on the screen that shows the temperature of the finals.
?I don’t think ft8 is exactly 50% duty cycle in that the temperature during receive never goes quite back to normal after transmit. ?Additionally you will see a steady rise in the temperature as you continually use ft8. ?I also am very protective of equipment
so I never run more that 50% rated output power of the radio and never use an amp. ?
K9OQ ?
On Jan 28, 2025, at 7:10?PM, Stiv Ostenberg <stiv@...> wrote:
?
Yeah, what is the deal with that?? My FT710 says it supports a 50% duty cycle, but then appears to retract that claim when running FT8, which I thought was almost exactly a 50% duty cycle.
?
?
Thanks for the reply.? That is good to know.? I did see in the FT950 manual that it was advised to run it at 1/3 to 1/2 power if making long digital mode transmissions.???
My FT450AT handled it like that fine for 2 1/2 years, then it didn't.
---- On Tue, 28 Jan 2025 11:23:05 -0600
Lee Mannchen <email@...> wrote ---
I ran my FT-950 almost every day like that for 7 years. Never had a problem. sstv, ezpal, rrty, you name it, I ran it.
On 1/28/2025 12:16 PM, John Geiger AF5CC via groups.io wrote:
Has anyone seen a list, or have knowledge, of which Yaesu transceivers are rated for 100% power out for full duty cycle modes like RTTY and FM?
?
?
?
|
Yaesu FT450 final transistor issues?
Here what was recently posted on an eham.net review for a different radio:
?
".re: the FT-450 used at the same price...there is a reason...
long history of losing the finals."
?
Has anyone else heard of this?? I did a quick google search and could find nothing about this supposed history.? If there are final transistor issues, is this just for the FT450AT or for the FT450D as well?? Any links supporting this claim would be interesting to see as well.
?
73 John AF5CC
|
Re: Full Duty Cycle radios
The way I look at it is it is not about specs it is about heat. ?That is why I love the temperature meter on the Ftdx101mp. ?I think most of the recent radios from Yaesu have that as part of the meter. ? Just turn on the temperature meter and watch what happens with the temperature of the final. ?Keep that within specs and you will be fine. ?I do the same with my Flex 6400 although in that case I had to add on some software that puts a meter on the screen that shows the temperature of the finals. ?I don’t think ft8 is exactly 50% duty cycle in that the temperature during receive never goes quite back to normal after transmit. ?Additionally you will see a steady rise in the temperature as you continually use ft8. ?I also am very protective of equipment so I never run more that 50% rated output power of the radio and never use an amp. ?
toggle quoted message
Show quoted text
On Jan 28, 2025, at 7:10?PM, Stiv Ostenberg <stiv@...> wrote:
?
Yeah, what is the deal with that?? My FT710 says it supports a 50% duty cycle, but then appears to retract that claim when running FT8, which I thought was almost exactly a 50% duty cycle.
?
From: Yaesu-Amateur-Radio@groups.io <Yaesu-Amateur-Radio@groups.io>
On Behalf Of John Geiger AF5CC via groups.io
Sent: Tuesday, January 28, 2025 9:30 AM
To: Yaesu-Amateur-Radio <Yaesu-Amateur-Radio@groups.io>
Subject: Re: [Yaesu-Amateur-Radio] Full Duty Cycle radios
?
Thanks for the reply.? That is good to know.? I did see in the FT950 manual that it was advised to run it at 1/3 to 1/2 power if making long digital mode transmissions.???
My FT450AT handled it like that fine for 2 1/2 years, then it didn't.
---- On Tue, 28 Jan 2025 11:23:05 -0600
Lee Mannchen <email@...> wrote ---
I ran my FT-950 almost every day like that for 7 years. Never had a problem. sstv, ezpal, rrty, you name it, I ran it.
On 1/28/2025 12:16 PM, John Geiger AF5CC via groups.io wrote:
Has anyone seen a list, or have knowledge, of which Yaesu transceivers are rated for 100% power out for full duty cycle modes like RTTY and FM?
?
?
?
|
Re: Full Duty Cycle radios
Yeah, what is the deal with that?? My FT710 says it supports a 50% duty cycle, but then appears to retract that claim when running FT8, which I thought was almost exactly a 50% duty cycle.
?
toggle quoted message
Show quoted text
From: Yaesu-Amateur-Radio@groups.io <Yaesu-Amateur-Radio@groups.io>
On Behalf Of John Geiger AF5CC via groups.io
Sent: Tuesday, January 28, 2025 9:30 AM
To: Yaesu-Amateur-Radio <Yaesu-Amateur-Radio@groups.io>
Subject: Re: [Yaesu-Amateur-Radio] Full Duty Cycle radios
?
Thanks for the reply.? That is good to know.? I did see in the FT950 manual that it was advised to run it at 1/3 to 1/2 power if making long digital mode transmissions.???
My FT450AT handled it like that fine for 2 1/2 years, then it didn't.
---- On Tue, 28 Jan 2025 11:23:05 -0600
Lee Mannchen <email@...> wrote ---
I ran my FT-950 almost every day like that for 7 years. Never had a problem. sstv, ezpal, rrty, you name it, I ran it.
On 1/28/2025 12:16 PM, John Geiger AF5CC via groups.io wrote:
Has anyone seen a list, or have knowledge, of which Yaesu transceivers are rated for 100% power out for full duty cycle modes like RTTY and FM?
?
?
?
|
Re: Full Duty Cycle radios
I was driving an AL-1200 so I could not overdrive the amp and got
a good clean signal out. All yaesu radios must be carefully
adjusted so they don't splatter. Very easy to do with a Yaesu. The
newer rigs have the AMC which chokes them down and keeps them from
over modulating.
On 1/28/2025 12:29 PM, John Geiger
AF5CC via groups.io wrote:
toggle quoted message
Show quoted text
Thanks for the reply.? That is good to know.? I did see in
the FT950 manual that it was advised to run it at 1/3 to 1/2
power if making long digital mode transmissions.??? My FT450AT
handled it like that fine for 2 1/2 years, then it didn't.
73 John AF5CC
|
Re: Full Duty Cycle radios
Thanks for the reply.? That is good to know.? I did see in the FT950 manual that it was advised to run it at 1/3 to 1/2 power if making long digital mode transmissions.??? My FT450AT handled it like that fine for 2 1/2 years, then it didn't.
73 John AF5CC
toggle quoted message
Show quoted text
I ran my FT-950 almost every day like that for 7 years. Never had
a problem. sstv, ezpal, rrty, you name it, I ran it.
On 1/28/2025 12:16 PM, John Geiger
AF5CC via groups.io wrote:
Has anyone seen a list, or have knowledge, of which Yaesu
transceivers are rated for 100% power out for full duty cycle
modes like RTTY and FM?
?
73 John AF5CC
|
Re: Full Duty Cycle radios
I ran my FT-950 almost every day like that for 7 years. Never had
a problem. sstv, ezpal, rrty, you name it, I ran it.
On 1/28/2025 12:16 PM, John Geiger
AF5CC via groups.io wrote:
toggle quoted message
Show quoted text
Has anyone seen a list, or have knowledge, of which Yaesu
transceivers are rated for 100% power out for full duty cycle
modes like RTTY and FM?
?
73 John AF5CC
|
Has anyone seen a list, or have knowledge, of which Yaesu transceivers are rated for 100% power out for full duty cycle modes like RTTY and FM?
?
73 John AF5CC
|
Another thing to look at is your antenna. If too much RF is being reflected back to the transmitter it might shut down to reduce the?chance of damaging the radio. I would use a good quality antenna analyzer to eliminate the antenna as the culprit. My next move would be to contact Yaesu at? customerservice@...?or call them at:
Contact us?(714)827-7600 between 8AM – 5PM PSTSDR HF Technical Support option 8 (NEW)Parts?Department option?4Customer?Service option?5Technical?Support option?6
Good luck, Dave KD2AYQ
On Wed, Jan 22, 2025 at 11:20 AM, John Geiger AF5CC wrote:
What antenna are you using and how close is it to the radio? RF getting into the radio can also shut it down.
This is my suspicion. Do you have ferrites on all the cables (power, USB, etc.)?
?
Digital modes are more likely to shut down your setup due to RF getting into the computer, radio, or even the power supply, because it's transmitting at full power (whatever you have the radio set for). You might get away with SSB when you can't with FT-8.
?
Donald KX8K
|
On Wed, Jan 22, 2025 at 11:20 AM, John Geiger AF5CC wrote:
What antenna are you using and how close is it to the radio? RF getting into the radio can also shut it down.
This is my suspicion. Do you have ferrites on all the cables (power, USB, etc.)?
?
Digital modes are more likely to shut down your setup due to RF getting into the computer, radio, or even the power supply, because it's transmitting at full power (whatever you have the radio set for). You might get away with SSB when you can't with FT-8.
?
Donald KX8K
|
What power supply are you using with the radio?? It might be going bad and not providing enough current or voltage.? Could also be the fuses in the power cord.? I have had fuses that check out ok with a continuity meter but still didn't allow enough current to get through.? If you have another power supply or cord you can use to try and see if it is one of those, or hook up another radio to your power supply and cord and see if it does the same thing.
What antenna are you using and how close is it to the radio? RF getting into the radio can also shut it down.
73 John AF5CC
toggle quoted message
Show quoted text
Howdy Amigos;
? I bought an FT-710 about a year ago when I got my General license.? It has worked great so far, and I am using it in my work to promote Amateur Radio in the SF Bay Area.? Recently it has started causing me problems, and I cant figure it out.
What happens is that I can hook it up just fine,? and run WSJT to access FT8.? It sees all the other stations, but when I go to transmit, the radio shuts itself off.? *click".? ?I have tried both using HRD for Cat Control, and having WSJT handle CAT itself, same problem.? Sometimes I can transmit enough to make a contact, others I have to keep turning the radio back on and trying to complete an exchange.
I backed out of FT8, and tried transmitting with the mike.? As soon as I speak, KAPOW.? Its a deader.??
I tried backing the power back to 50w, and it seems happier, but 75 croaked it again. ?
Any ideas what the problem is?? I was demoing the radio in front of a large group of new hams when it decided to start this, and it looked pretty bad.
|
Sounds like a power supply problem. A transmitter will shut down,
if you overload its power source.
Gary
On 1/21/2025 6:25 PM, Stiv Ostenberg
wrote:
toggle quoted message
Show quoted text
Howdy Amigos;
? I bought an FT-710 about a year ago when I got my General
license.? It has worked great so far, and I am using it in my
work to promote Amateur Radio in the SF Bay Area.? Recently it
has started causing me problems, and I cant figure it out.
What happens is that I can hook it up just fine,? and run WSJT
to access FT8.? It sees all the other stations, but when I go to
transmit, the radio shuts itself off.? *click".? ?I have tried
both using HRD for Cat Control, and having WSJT handle CAT
itself, same problem.? Sometimes I can transmit enough to make a
contact, others I have to keep turning the radio back on and
trying to complete an exchange.
I backed out of FT8, and tried transmitting with the mike.? As
soon as I speak, KAPOW.? Its a deader.??
I tried backing the power back to 50w, and it seems happier, but
75 croaked it again.
?
Any ideas what the problem is?? I was demoing the radio in
front of a large group of new hams when it decided to start
this, and it looked pretty bad.
|
Carl
Carl Foster - KB7AZ
Stiv Ostenberg
Dave KD2AYQ