Anyone have a working email address for Palstar. The 2 one the website bounce back.
?
Steve? W7CM
|
Philip,
?
Thank you very much for your input.. I'll give the K4D more thoughts.. just wish that Elecraft would implement analog-looking meters (like those on my FTDX101D) in their K4 transceivers.
?
Unlike the problematic LA-1K, my KPA1500 has absolutely no issues since day-one!? Hope one day soon you will add a KPA1500 to your amps collection.? Oh btw, you can see both the LA-1K and KPA1500 on my QRZ page.
?
73
Ray
KJ5MI
|
Hi Barry, for instance my KPA500 works perfect at 600 watts, swr does not move. My DL is too small, i will need to get a bigger one.
?
I have the previous FW, i will update it.
?
Issue exists only in CW, near the end of band, with swr 1.3 max with 500w or more, auto tuner start finding solutions. Ill try with it bypassed.
?
73,
?
Philip
CE4PS
|
Ray I like it a lot. My dream is to have a kpa1500 but I need near 10K to put one of those here in Chile.
?
73, Philip
|
Re: LA1K switches to standby
The LA-1K, by design, switches to
standby at every band change.? From the Fault and Display
Notifications page:
This is reiterated in the notes to firmware version 1.08S (current
online version):
Added the
detection of additional band frequency changes that return
the amplifier to the standby mode when there is a change
detected
73,
Kent
K9ZTV
On 9/11/2024 1:32 PM, Chris K2HVE
wrote:
toggle quoted message
Show quoted text
My LA1K ,Which is set to standby at startup , Switches back
to standby on the very first key up.?
SWR Is 1.2 into a Buckmaster 6 to 80. Radio is a 7610.
I touched standby and it goes back to operate and after that,
it is totally fine.
Can’t figure out Why it only does this once and everything is
fine??
--
de K2HVE
|
My LA1K ,Which is set to standby at startup , Switches back to standby on the very first key up.?
SWR Is 1.2 into a Buckmaster 6 to 80. Radio is a 7610.
I touched standby and it goes back to operate and after that, it is totally fine.
Can’t figure out Why it only does this once and everything is fine??
--
de K2HVE
|
Philip, ? When you say using any other AMP, what are those amps? Are they also Solid State? Tube amps can go pretty much thru anything without obvious happenings, Solid State not so much. The LA1K is very touchy to issues with its protection. ? You say no Dummy Load? That’s not going to help narrow it down. ? Are you using the latest firmware? If not DL it from website. ? Without a dummy load its going to be difficult to determine if it’s the amp, radio, cable, antenna. ? 73 and GL. ? Barry VE6BMX ? ? ? ? ? ? ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of Philip Smith via groups.io
Sent: September 10, 2024 12:03 PM
To: [email protected]
Subject: [la1k] Tripping on CW? Hello I have a M2 KT36XA flat on the 3 bands. When I use the LA1K on CW with more than 180 watts, it trips, SWR start jumping. Using any other AMP is no problem.
|
On Wed, Sep 11, 2024 at 12:50 PM, Philip Smith wrote:
txcvr is an Elecraft K4D
Hi Philip, CE4PS, how do you like your Elecraft K4D?? Thinking that it might pair even better with my Elecraft KPA1500.
?
73
Ray
KJ5MI
|
Hi Barry txcvr is an Elecraft K4D, voltage is 220V, antenna is flat swr.
No big dummy here.
73,
?
Philip CE4PS
|
Hello Ron, unfortunately I don't have a 1K dummy load to test, but antena is 1.2 1.3 max. Other linear do not trip or make SWR jump. Measurements made also with a LP-100A.
73,
|
Need more info,
Yaesu FTdx5000 has a known issue.?
What is your txcver model?
What is the voltage supply? 220/120
Did you test on dummy load?
73
Hello I have a M2 KT36XA flat on the 3 bands.
When I use the LA1K on CW with more than 180 watts, it trips, SWR start jumping. Using any other AMP is no problem.
?
Any ideas?
?
Cheers,
?
Philip CE4PS
|
How does the amp test on a dummy load??
Ron?WD8T
Sent from Proton Mail Android
-------- Original Message -------- On 9/10/24 2:02 PM, Philip Smith wrote: Hello I have a M2 KT36XA flat on the 3 bands.
When I use the LA1K on CW with more than 180 watts, it trips, SWR start jumping. Using any other AMP is no problem.
?
Any ideas?
?
Cheers,
?
Philip CE4PS
|
Hello I have a M2 KT36XA flat on the 3 bands.
When I use the LA1K on CW with more than 180 watts, it trips, SWR start jumping. Using any other AMP is no problem.
?
Any ideas?
?
Cheers,
?
Philip CE4PS
|
You really only need your keying cable and nothing else.? That’s one wire and t RCA plugs usually
?
toggle quoted message
Show quoted text
From: [email protected] < [email protected]> On Behalf Of
Glen Jenkins WB4KTF
Sent: Saturday, August 31, 2024 7:02 AM
To: [email protected]
Subject: Re: [la1k] FT710 to LA1K
?
The company Associated Radio makes cables to interconnect between rigs and the LA-1K, if you need a cable that is not listed I believe that they will make one for you.
Glen, WB4KTF, Austin, TX
Licensed since 1968
|
Here is a keying cable is you just want to use RF sensing.
?
Here’s the cable you need for keying and band data.
?
?
I have that same Ameritron cable and it works great. Just be aware it’s very short so if you plan to go further away with the amp you’ll need an an extension which is easily found on Amazon.
?
Kory
|
James ...
Additional information you will need and decisions you need to
make:
Question 1:? Do you intend to operate CW with your LA-1K?
If so, choose DIRECT keying mode in the LA-1K, but understand that
DIRECT keying mode requires that a band-data cable be inserted in
the DB9 jack.? Without this cable, the LA-1K reverts to NORMAL
keying which has the disadvantage of causing the first Morse
character to be truncated.? An
extended discussion of this issue can be found here:?
Likewise, the LA-1K manual says on page 21:
Question 2:? Do you intend to operate QSK (full break-in) with
your LA-1K?
Many CW operators do.? Unfortunately, the LA-1K is not
designed for QSK but can be made so by inserting an
external electronic T/R switch between the transceiver and the
amplifier.? There are several out there but the very best is the
DX Connections QSK-2500.? It is hand-made by K3HZP who offers
excellent technical support.? While the current price of $425 may
seem high, it is less than what Palstar would have to charge to
redesign the LA-1K.? It has the added advantage of being portable
and able to make any non-QSK amplifier a fully-QSK one.? I
have two of them, one for the LA-1K and one for vintage
equipment.? I use it nightly with a TS-890S on CW traffic nets at
speeds up to 30 wpm and is totally transparent.
The main DX Connections QSK-2500 website is here:?
Let me know if I can help further.
73,
Kent
K9ZTV
On 8/30/2024 10:54 PM, James wrote:
toggle quoted message
Show quoted text
At last, some useful assistance.? Many thanks.??
It is possible that the "band cable" that I have will perform
all of the needed tasks.? Need DB9 pin 7 to go to ground when
transmitting, and need to have the four "band" lines properly
connected.
What about the other four DB9 pins?
Before using the "DB 8MY2" cable I need to measure the
signals it provides and verify that it seems to work.? ?I expect
that using a resistor as a probe of the DB9 is a safe way to
measure with the other end connected to FT710.??
Sure wish we all had a good schematic and maintenance manual.
Have not received a response from
PALSTAR.? Several of their Email addresses no longer work.
Thanks Kent? ? Did you make your own cable
or an off-the-shelf cable?
James / Mac? ? N8TT
------ Original Message ------
Date 8/30/2024 5:34:00 PM
Subject Re: [la1k] FT710 to LA1K
James
...
FT-710 TUNER/LINEAR? ? ????????? LA-1K RADIO
INTERFACE (DB9)
RESET(BAND D).........................Pin 8
BAND C........................................Pin 9
TX D(BAND A).............................Pin 2
TX GND........................................Pin 7
RX D(Band B)...............................Pin 1
The LA-1K is keyed either by the transceiver's TX GND
connected to Pin 7 in the amp . . . or . . . TX GND in the
710 connected to the PTT RCA Phono jack on the back of the
LA-1K.? Either will work? fine, but not both.? One or the
other, but not both.? I use PIN 7 in the LA-1K's DB9 jack.
Secondly, by connecting the FT-710's band-data lines, the
amplifier follows the transceiver's band changes instantly.?
This has the advantage of having the amp's relays closed and
settled before any RF hits them.
Ignore TX INHIBIT.
73,
Kent
K9ZTV
On 8/29/2024 7:38 PM, James
wrote:
I was sold a "band cable" that is thought to connect to the
8 pin "Tuner/Linear" port on the F710 (upper left on the
back) and that it will supply band information to LA1K when
the other end is plunged into the back of LA1K.? This "band
cable" is Ameritron DB 8MY2.
Of course, the LA1K needs to know when the FT710
transmits.? ?The manual for the FT710 seems to indicate
that the 8 pins include a transmitter "ground" and a
"transmitter inhibit."? Does the LA1K use those two
signals to effect PTT?? (pulled low on transmit)
Details on how one has used FT710 with LA1K will be
most welcome.
73? ? James? ? N8TT
|
How to connect FT710 to LA1K
Dear Group:? Attached should be a short pdf document with details.? Version One. Others are encouraged to provide details about connecting their transceiver.
Thanks for assistance provided.? ? 73? ?James? N8TT
|
The company Associated Radio makes cables to interconnect between rigs and the LA-1K, if you need a cable that is not listed I believe that they will make one for you.
www.associatedradio.com
--
Glen, WB4KTF, Austin, TX
Licensed since 1968
|
At last, some useful assistance.? Many thanks.?? It is possible that the "band cable" that I have will perform all of the needed tasks.? Need DB9 pin 7 to go to ground when transmitting, and need to have the four "band" lines properly connected. What about the other four DB9 pins?
Before using the "DB 8MY2" cable I need to measure the signals it provides and verify that it seems to work.? ?I expect that using a resistor as a probe of the DB9 is a safe way to measure with the other end connected to FT710.??
Sure wish we all had a good schematic and maintenance manual.
Have not received a response from PALSTAR.? Several of their Email addresses no longer work.
Thanks Kent? ? Did you make your own cable or an off-the-shelf cable?
James / Mac? ? N8TT
------ Original Message ------
Date 8/30/2024 5:34:00 PM
Subject Re: [la1k] FT710 to LA1K
James ...
FT-710 TUNER/LINEAR? ? ????????? LA-1K RADIO INTERFACE
(DB9)
RESET(BAND D).........................Pin 8
BAND C........................................Pin 9
TX D(BAND A).............................Pin 2
TX GND........................................Pin 7
RX D(Band B)...............................Pin 1
The LA-1K is keyed either by the transceiver's TX GND connected to
Pin 7 in the amp . . . or . . . TX GND in the 710 connected to the
PTT RCA Phono jack on the back of the LA-1K.? Either will work?
fine, but not both.? One or the other, but not both.? I use PIN 7
in the LA-1K's DB9 jack.
Secondly, by connecting the FT-710's band-data lines, the
amplifier follows the transceiver's band changes instantly.? This
has the advantage of having the amp's relays closed and settled
before any RF hits them.
Ignore TX INHIBIT.
73,
Kent
K9ZTV
On 8/29/2024 7:38 PM, James wrote:
I was sold a "band cable" that is thought to connect to the 8 pin
"Tuner/Linear" port on the F710 (upper left on the back) and that
it will supply band information to LA1K when the other end is
plunged into the back of LA1K.? This "band cable" is Ameritron DB
8MY2.
Of course, the LA1K needs to know when the FT710 transmits.?
?The manual for the FT710 seems to indicate that the 8 pins
include a transmitter "ground" and a "transmitter inhibit."?
Does the LA1K use those two signals to effect PTT?? (pulled low
on transmit)
Details on how one has used FT710 with LA1K will be most
welcome.
73? ? James? ? N8TT
|
I was sold a "band cable" that is thought to connect to the 8 pin "Tuner/Linear" port on the F710 (upper left on the back) and that it will supply band information to LA1K when the other end is plunged into the back of LA1K.? This "band cable" is Ameritron DB 8MY2.
Of course, the LA1K needs to know when the FT710 transmits.? ?The manual for the FT710 seems to indicate that the 8 pins include a transmitter "ground" and a "transmitter inhibit."? Does the LA1K use those two signals to effect PTT?? (pulled low on transmit)
Details on how one has used FT710 with LA1K will be most welcome.
73? ? James? ? N8TT
|
Philip Smith
Chris K2HVE
Ron Emerson
Glen Jenkins WB4KTF