Re: Morgan systems M303 coaxial surge suppressors used with the LA1k amp
I am not sure what to tell you as far as price, I have seen them for sale at between $2700 to $2900 for being in excellent condition and under two years old. Maybe an older amp may not fetch as much but looking at ad's on QRZ that seems to be around the asking price range with maybe $2800 being middle ground. Many may say why should they buy a used LA1K over a new Mercury IIIs and that is a simple answer, you gotta get on a list for a year unless you wanna pay higher than list for some who act like ticket scalpers and charge way over list. They are both good amps but the Mercury IIIS is unattainable as far as buying new off the shelf? plus even two to three year old amps that were kit form are going for around $2800.?
|
Re: High SWR causing "Bypass SWR" error when in STBY
I contacted Mark at Palstar and performed all his recommended tests, including connecting a 50 ohm dummy load direct to the LA-1K RF Output. It should be noted, I have two LA-1K amplifiers. My second LA-1K is working perfect, no issues. I swapped the amps around between my IC-7610 and Flex6400M and the issue follows the amp. No matter what I do each time I key the amplifier with 10 watts drive the LA-1K goes into "Bypass STBY" and shows a high 3.2-3.4 SWR reading in red. I boxed up the amp and Fed-Ex it to Palstar. Mark will take a look at it in the next week. Once I receive his diagnosis, I will post the results to the forum.
Thomas NE7X...
|
Re: Morgan systems M303 coaxial surge suppressors used with the LA1k amp
I have Morgan M-303 Suppressors on my antennas and have no problems on any band. ?I’m using an FT-DX10 to an HF-AUTO tuner with a Hexbeam and Endfed antennas. ?All work great through the Morgan’s. ?I also use a Morgan device for my rotator. ?I do have a fairly extensive ground system in and outside the house. ?Some pictures on my QRZ.com page. ?Hope this helps. ?73, Jerry K9TRX
|
Re: Morgan systems M303 coaxial surge suppressors used with the LA1k amp
Hi Jim,
I have the? Array Solutions AS-303 and?Morgan Systems?M-300. I didn't experience any issues with either of them and the LA1K is ok with them.
https://cqqrz.github.io/projects/entry-panel/
73, Claus
toggle quoted message
Show quoted text
-------- Original message -------- From: James <ke2tr3000@...> Date: 9/19/23 9:32 AM (GMT-06:00) Subject: [la1k] Morgan systems M303 coaxial surge suppressors used with the LA1k amp
I am buying a LA1K used amp this coming week and for lightning protection outside the house I have tow coaxial lines that each have a Morgan System M303 arrestor in line before the coax comes into the room. Bot ate mounted to a copper plate and also grounded with "6 wire to 8 ft ground rods. I was wondering if anyone had any experience using these arrestors where a SS amp might have issue passing a signal threw them cause the have a choke system inside that bleeds some of the static to ground and therefore just maybe that would create an issue with SS finals. I live in Florida and these arrestors have been working fine with an Acom 1000 for three years, I used the Alpha Delta ones before but they seemed to have issues with the weather down here with varying SWR at times but once I installed the Morgan systems jobs no issues. They are very similar to the Array Solution jobs and the original design was taken from the I.C.E company that is no longer. Any input would be great, TNX. Jim KX2T
|
Re: High SWR causing "Bypass SWR" error when in STBY
I have the same issue after upgrading my Yaesu FTDX10.
I’ve already tried resetting the radio.?
‘73
KE0WNL
|
Re: High SWR causing "Bypass SWR" error when in STBY
Hi, Tom
Never had that problem but it sounds to me more like an intermittent SWR issue caused by bad coax, faulty PL-259 or bad SWR in the load itself (ant or dummy load). Does it work ok into an antenna presenting a known SWR of less than 2.5 to 1 SWR? What does it do when presented with an antenna with known high (greater than 2.5 to 1) SWR? If the transceiver has an internal tuner, make sure that is bypassed. Does the transceiver show a good swr when the dummy load is in line? Could be lots of reasons other than the LA-1K itself. Good luck with it!
--
GL es 73 de Bill, NT1N
|
Re: Morgan systems M303 coaxial surge suppressors used with the LA1k amp
Hi James,
I read your note concerning the LA1K with interest since I have a LA1k that I am not using.? I have several Alpha Delta surge suppressor units in the coax between my HEX beam antenna and the amp.? I have never had a problem with the AD units and they have been in service for ten years or so.? I too liked the ICE units and am sorry that they are no longer available.
I have been thinking about selling my LA1K but never have gotten past this point.? My unit is like new condition with only SSB phone use.? I wonder if you would tell me what I should ask for my used LA1K.? Thank you.??
73 Sam N1OVA
On Tuesday, September 19, 2023 at 10:32:23 AM EDT, James <ke2tr3000@...> wrote:
I am buying a LA1K used amp this coming week and for lightning protection outside the house I have tow coaxial lines that each have a Morgan System M303 arrestor in line before the coax comes into the room. Bot ate mounted to a copper plate and also grounded with "6 wire to 8 ft ground rods. I was wondering if anyone had any experience using these arrestors where a SS amp might have issue passing a signal threw them cause the have a choke system inside that bleeds some of the static to ground and therefore just maybe that would create an issue with SS finals.
I live in Florida and these arrestors have been working fine with an Acom 1000 for three years, I used the Alpha Delta ones before but they seemed to have issues with the weather down here with varying SWR at times but once I installed the Morgan systems jobs no issues. They are very similar to the Array Solution jobs and the original design was taken from the I.C.E company that is no longer. Any input would be great, TNX.
Jim
KX2T?
|
Morgan systems M303 coaxial surge suppressors used with the LA1k amp
I am buying a LA1K used amp this coming week and for lightning protection outside the house I have tow coaxial lines that each have a Morgan System M303 arrestor in line before the coax comes into the room. Bot ate mounted to a copper plate and also grounded with "6 wire to 8 ft ground rods. I was wondering if anyone had any experience using these arrestors where a SS amp might have issue passing a signal threw them cause the have a choke system inside that bleeds some of the static to ground and therefore just maybe that would create an issue with SS finals.
I live in Florida and these arrestors have been working fine with an Acom 1000 for three years, I used the Alpha Delta ones before but they seemed to have issues with the weather down here with varying SWR at times but once I installed the Morgan systems jobs no issues. They are very similar to the Array Solution jobs and the original design was taken from the I.C.E company that is no longer. Any input would be great, TNX.
Jim
KX2T
|
Morgan systems M303 coaxial surge suppressors used with the LA1k amp
I am buying a LA1K used amp this coming week and for lightning protection outside the house I have tow coaxial lines that each have a Morgan System M303 arrestor in line before the coax comes into the room. Bot ate mounted to a copper plate and also grounded with "6 wire to 8 ft ground rods. I was wondering if anyone had any experience using these arrestors where a SS amp might have issue passing a signal threw them cause the have a choke system inside that bleeds some of the static to ground and therefore just maybe that would create an issue with SS finals.
I live in Florida and these arrestors have been working fine with an Acom 1000 for three years, I used the Alpha Delta ones before but they seemed to have issues with the weather down here with varying SWR at times but once I installed the Morgan systems jobs no issues. They are very similar to the Array Solution jobs and the original design was taken from the I.C.E company that is no longer. Any input would be great, TNX.
Jim
KX2T?
|
Re: 18MHz drain Voltage supply Bypass problem
On Mon, Sep 18, 2023 at 12:56 PM, Raul J Pla wrote:
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
?
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
Hi Raul, Literally within days of taking delivery of my brand new LA-1K, purchased directly from Palstar, I was operating the thing (on 249.7VAC according to my DVM) with the FTDX101D as the exciter (RF power setting = 50W) on 40M and got the same error condition as can be seen in this video clip I shared with Mr. Mark Ward (Palstar techician) on January 30, 2023. Excerpt from Mr. Ward's email response for your consideration, as follows: ------------------------------------------------------------------------------------------- Hi Raymond, The information below applies to LA-1K units with a voltage select switch. ? Bypass+VD flashing on display, 50V reading now: ? This fault display tells us that you lost +50V DC power at some point during the last transmit cycle.? The display indication stays on, even though the +50V has now come back.?? This display resets when you transmit again, unless there is another voltage fault. ? The most common cause for this indication (if operating on 120V) is: Power Supply Switch not set for 120V). Another possibility, is the LA-1K power supply voltage selector switch may have failed under load.? This switch is only connected when set to 120V. ? If Bypass+VD comes up when operating on 240V, either the LA-1K power supply is faulty, or the AC supply voltage is too low. ? If the power supply is found to be faulty, the LA-1K will have to be returned for repair. ? Regards, Mark ------------------------------------------------------------------------------------------- With my LA-1K doing that, using a FTDX101D as the exciter, I don't think your IC-7300 is causing the "Bypass +Vd" error.? For months, said error condition has happened to me, from time to time, when operating the inferior LA-1K, until I turned it into a static display as my backup amp, after taking delivery of my brand new KPA1500 amp from Elecraft before their price increase. All are welcome to visit my QRZ page to check out some interesting HF contacts I made with my Elecraft amp. 73, Ray KJ5MI
|
Re: 18MHz drain Voltage supply Bypass problem
Sorry, I thought it was doing it on all bands
toggle quoted message
Show quoted text
On Sep 18, 2023, at 2:33 PM, Raul J Pla <planet95x@...> wrote:
? Barry, Its doing a good 1KW on all other bands so the amp cannot be damaged.
R On Mon, Sep 18, 2023 at 2:16?PM Barry K4OCS < KK4OCS@...> wrote: If you have blown one or both of the LDMOS outputs your VSWR will be off and it will never load up going into bypass ? Thanks for the note.. however. Over power input is not the issue. I'm using 20 to 50 watts in.
The bypass error starts at 17 watts input
I never have put over 50w in on any band.
Raul W4AWI On Mon, Sep 18, 2023, 14:07 Barry K4OCS < KK4OCS@...> wrote: I had the same problem with my ICOM 7300 I sent my LA 1K back to the factory after they replaced ?one of two LDMOS’s I had them install a new protect board that will put the unit in bypass if it sees anything more than 60 watts. I replace the ICOM with a Yaesu FTDX101D no more over shoot. that project board is not free but it’s very inexpensive. On Sep 18, 2023, at 1:11 PM, Joe Loverti WW8X <jloverti@...> wrote:
? If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). Joe WW8X On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla < planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
Re: 18MHz drain Voltage supply Bypass problem
Barry I will try all this. Good idea to weed out stray RF issues and other things. I have a dummy load to try as well. I hope I find a fix before spending $$ on UPS trips and hoping I dont get hit with a repair bill too.
Raul W4AWI
On Mon, Sep 18, 2023 at 2:30?PM Barry < barplo@...> wrote: Raul, ? Here is what I would do. 1.8:1 will not put the la1k into bypass, so I would take the tuner out for 17m testing. See if it still goes into bypass. ? The La1k goes into bypass for 2 reasons. SWR or BYPASS (SWR means you have other issues such as coax or ant) Bypass means it’s a power thing. ? If the LA1K sees any drive over 50w it goes into BYPASS. It also will go into BYPASS if iD=42.5 or more. ? Take everything out of line. Swap out even the patch cord from radio to Amp. (if no swap check or redo the patch cord). Also Take out anything in between radio and amp such as a QRM eliminator. ? If it does it even with a dummy load you have issues which really, from my experience from friends in local community who had a scope (RIGOL) to see exactly what is going on, it could be a cheap solution to Your problem without sending in radio or amp such as using ALC cord to the amp and using the built in ALC in the LA1K. ? Also, not sure if your using RF sensing or Direct cable. If RF sensing, you could try Direct cable. ? I have been down this road with my FTDX5000. I know its not the same radio, but I believe the problem solving techniques are similar if not the same. ? Hope this helps. ? Barry VE6UM ? ? ? I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz) Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m. There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working.. I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display] Amp is in BYPASS to protect from loss of +50V, drain voltage supply. The indication should clear in a few seconds. This occurs when operating on 120V, if Drain Current (Id) exceeds 32 Amps . Solution: Switch supply voltage to 240V, or If operating on 120V, Reduce Drive Power BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
|
Re: 18MHz drain Voltage supply Bypass problem
Barry, Its doing a good 1KW on all other bands so the amp cannot be damaged.
R
On Mon, Sep 18, 2023 at 2:16?PM Barry K4OCS < KK4OCS@...> wrote: If you have blown one or both of the LDMOS outputs your VSWR will be off and it will never load up going into bypass ? Thanks for the note.. however. Over power input is not the issue. I'm using 20 to 50 watts in.
The bypass error starts at 17 watts input
I never have put over 50w in on any band.
Raul W4AWI On Mon, Sep 18, 2023, 14:07 Barry K4OCS < KK4OCS@...> wrote: I had the same problem with my ICOM 7300 I sent my LA 1K back to the factory after they replaced ?one of two LDMOS’s I had them install a new protect board that will put the unit in bypass if it sees anything more than 60 watts. I replace the ICOM with a Yaesu FTDX101D no more over shoot. that project board is not free but it’s very inexpensive. On Sep 18, 2023, at 1:11 PM, Joe Loverti WW8X <jloverti@...> wrote:
? If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). Joe WW8X On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla < planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
Re: 18MHz drain Voltage supply Bypass problem
Raul, ? Here is what I would do. 1.8:1 will not put the la1k into bypass, so I would take the tuner out for 17m testing. See if it still goes into bypass. ? The La1k goes into bypass for 2 reasons. SWR or BYPASS (SWR means you have other issues such as coax or ant) Bypass means it’s a power thing. ? If the LA1K sees any drive over 50w it goes into BYPASS. It also will go into BYPASS if iD=42.5 or more. ? Take everything out of line. Swap out even the patch cord from radio to Amp. (if no swap check or redo the patch cord). Also Take out anything in between radio and amp such as a QRM eliminator. ? If it does it even with a dummy load you have issues which really, from my experience from friends in local community who had a scope (RIGOL) to see exactly what is going on, it could be a cheap solution to Your problem without sending in radio or amp such as using ALC cord to the amp and using the built in ALC in the LA1K. ? Also, not sure if your using RF sensing or Direct cable. If RF sensing, you could try Direct cable. ? I have been down this road with my FTDX5000. I know its not the same radio, but I believe the problem solving techniques are similar if not the same. ? Hope this helps. ? Barry VE6UM ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Raul J Pla
Sent: September 18, 2023 10:57 AM
To: [email protected]
Subject: [la1k] 18MHz drain Voltage supply Bypass problem? I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz) Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m. There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working.. I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display] Amp is in BYPASS to protect from loss of +50V, drain voltage supply. The indication should clear in a few seconds. This occurs when operating on 120V, if Drain Current (Id) exceeds 32 Amps . Solution: Switch supply voltage to 240V, or If operating on 120V, Reduce Drive Power BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
|
Re: 18MHz drain Voltage supply Bypass problem
If you have blown one or both of the LDMOS outputs your VSWR will be off and it will never load up going into bypass
toggle quoted message
Show quoted text
On Sep 18, 2023, at 2:11 PM, Raul J Pla <planet95x@...> wrote:
? Thanks for the note.. however. Over power input is not the issue. I'm using 20 to 50 watts in.
The bypass error starts at 17 watts input
I never have put over 50w in on any band.
Raul W4AWI On Mon, Sep 18, 2023, 14:07 Barry K4OCS < KK4OCS@...> wrote: I had the same problem with my ICOM 7300 I sent my LA 1K back to the factory after they replaced ?one of two LDMOS’s I had them install a new protect board that will put the unit in bypass if it sees anything more than 60 watts. I replace the ICOM with a Yaesu FTDX101D no more over shoot. that project board is not free but it’s very inexpensive. On Sep 18, 2023, at 1:11 PM, Joe Loverti WW8X <jloverti@...> wrote:
? If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). Joe WW8X On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla < planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
Re: 18MHz drain Voltage supply Bypass problem
Raul, ? It still could be the issue and you wont really know until you put a scope on it. The LA1K will go into bypass with the slightest overshoot over 50 watts. The latest firmware. ? That being said, the over shoot could still happen at lower power. ? Barry VE6UM ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Raul J Pla
Sent: September 18, 2023 12:11 PM
To: [email protected]
Subject: Re: [la1k] 18MHz drain Voltage supply Bypass problem? Thanks for the note.. however. Over power input is not the issue. I'm using 20 to 50 watts in. The bypass error starts at 17 watts input I never have put over 50w in on any band. ? On Mon, Sep 18, 2023, 14:07 Barry K4OCS <KK4OCS@...> wrote: I had the same problem with my ICOM 7300 I sent my LA 1K back to the factory after they replaced ?one of two LDMOS’s I had them install a new protect board that will put the unit in bypass if it sees anything more than 60 watts. I replace the ICOM with a Yaesu FTDX101D no more over shoot. that project board is not free but it’s very inexpensive.
On Sep 18, 2023, at 1:11 PM, Joe Loverti WW8X <jloverti@...> wrote:
? If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). ? On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla <planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz) Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m. There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working.. I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display] Amp is in BYPASS to protect from loss of +50V, drain voltage supply. The indication should clear in a few seconds. This occurs when operating on 120V, if Drain Current (Id) exceeds 32 Amps . Solution: Switch supply voltage to 240V, or If operating on 120V, Reduce Drive Power BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
|
Re: 18MHz drain Voltage supply Bypass problem
Thanks for the note.. however. Over power input is not the issue. I'm using 20 to 50 watts in.
The bypass error starts at 17 watts input
I never have put over 50w in on any band.
Raul W4AWI
On Mon, Sep 18, 2023, 14:07 Barry K4OCS < KK4OCS@...> wrote: I had the same problem with my ICOM 7300 I sent my LA 1K back to the factory after they replaced ?one of two LDMOS’s I had them install a new protect board that will put the unit in bypass if it sees anything more than 60 watts. I replace the ICOM with a Yaesu FTDX101D no more over shoot. that project board is not free but it’s very inexpensive. On Sep 18, 2023, at 1:11 PM, Joe Loverti WW8X <jloverti@...> wrote:
? If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). Joe WW8X On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla < planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
Re: 18MHz drain Voltage supply Bypass problem
I had the same problem with my ICOM 7300 I sent my LA 1K back to the factory after they replaced ?one of two LDMOS’s I had them install a new protect board that will put the unit in bypass if it sees anything more than 60 watts. I replace the ICOM with a Yaesu FTDX101D no more over shoot. that project board is not free but it’s very inexpensive.
toggle quoted message
Show quoted text
On Sep 18, 2023, at 1:11 PM, Joe Loverti WW8X <jloverti@...> wrote:
? If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). Joe WW8X On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla < planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
Re: 18MHz drain Voltage supply Bypass problem
If you do a Google search you should see some reports on an overshoot anomaly?with the IC-7300. I didn't cure my intermittent bypass issues until I started using an FTDX-10. I don't know how widespread this issue is, but I know I had it. My IC-7300 played well with my AL80-B (tube amp) but not with the LA-1K (solid-state amp). Joe WW8X
On Mon, Sep 18, 2023 at 12:56?PM Raul J Pla < planet95x@...> wrote: I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
18MHz drain Voltage supply Bypass problem
I started using my 2022 LA-1K this week in earnest. I was checking the power on each band as well as some CQs on CW or answering?some SSB CQs. Testing bands 40m to 10m I found a problem on 17m (18MHz)
Running the IC-7300 with just 30-50W into the amp, I saw 900 to 1050W on all bands except 17m.
There it goes into bypass, even dropping power to 15W in 300W out I get the?+Vd bypass.? Going down to 10W in 200W lets it keep working..
I made a 4 min video and a couple of pictures in case Palstar needs to see this. Is there an internal adjustment I can do or some testing I can do inside to avoid the shipping to and from Palstar? The book only has this text below Bypass+VD: [as seen on display]
Amp is in BYPASS to protect from loss of +50V, drain
voltage supply. The indication should clear in a few
seconds. This occurs when operating on 120V, if Drain
Current (Id) exceeds 32 Amps .
Solution:
Switch supply voltage to 240V, or If operating on 120V,
Reduce Drive Power
Any?help, appreciated!
BTW I'm using the HF-Auto tuner as well. The antenna is at 1.8:1 and the tuner gets to 1.05:1 easy.
73 Raul? ?W4AWI
|
Thomas NE7X
Barry K4OCS