Yes Sir, I first checked there.
But thanks for the one on the V. I will compare them when I get it home.
-
You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
Purchased new Texas Star DX1600X
- Thread starter Turn it to the right
- Start date
Yes Sir, I first checked there.
But thanks for the one on the V. I will compare them when I get it home.
I was pleased to get my new Sweet Sixteen in from Copper converted.
I do have an issue with SWR with or without it powered though. It puts my radio into a 1.5:1 ratio with it off and with it on it causes the radio SWR to swing to 3:1 unmodulated and 1.5 :1 with modulation. All meters (power/amp) swing forward, and voltage is stable at 13.8 VDC.
With a barrel connector and unit out of line, SWR drops to 1:1 at the radio.
Any suggestions?
I do have an issue with SWR with or without it powered though. It puts my radio into a 1.5:1 ratio with it off and with it on it causes the radio SWR to swing to 3:1 unmodulated and 1.5 :1 with modulation. All meters (power/amp) swing forward, and voltage is stable at 13.8 VDC.
With a barrel connector and unit out of line, SWR drops to 1:1 at the radio.
Any suggestions?
Sounds to me the amp needs it's input and output tuned
Shadetree Mechanic
Delaware Base Station 808
Did you ever resolve this? Are you using the meter in the radio or an external meter? The SWR is ok with modulation and high with just the dead key? How much power do you have dead key? Have you tried turning it up a little? I wonder if an antenna tuner between the radio and amp would work? Just throwing some ideas out.
No, the issue is not solved yet.
I'm driving with 100w SSB and any lower makes the SWR higher. I use a Dosy after the amp and the meter and tuner in the Yaesu FT450D.
I have 3' jumpers with an RF coke at the radio o/p and on on the amp o/p running 3' jumper coax for each. I've tried other cables, with or without the chokes. Any longer raises SWR.
My radio tuner fixes the radio SWR, but the amp with that high SWR gets hot fast and will damage it.
Thanks Shade Tree, I appreciate any help I can get.
de VE3MYC
Mike.
I'm driving with 100w SSB and any lower makes the SWR higher. I use a Dosy after the amp and the meter and tuner in the Yaesu FT450D.
I have 3' jumpers with an RF coke at the radio o/p and on on the amp o/p running 3' jumper coax for each. I've tried other cables, with or without the chokes. Any longer raises SWR.
My radio tuner fixes the radio SWR, but the amp with that high SWR gets hot fast and will damage it.
Thanks Shade Tree, I appreciate any help I can get.
de VE3MYC
Mike.
When you say choke does that mean 4-6 wraps around a coffee can or wraps of coax inside of a big ferrite at the feed point?
Can you tell me how that is done? I have had many people give me amazing information on this. Will never be in business with any of those folks that kept me from burning a radio that I care greatly about.
LOL!!! Maybe he misstyped his drive wattage? Or are those numbers truly recommend by texas Star? I myself doubt it. I did initially concider that very amp as my first mobile transistorized (for base) use amp. But am looking at the 500V.
Yes sir I do believe you are correct.
This is 2 for 2 Texas Star amps in the past 6 months, the 667V and now the new DX 1600X are defective out of the factory.
I had a fellow operator drop by my shack today with his identical but silver faced amp and plug it in to my station and it ran a 1.2 to 1.3 match. No reflection of 3:1 between modulation.
Looks like another one to ship off to Esondido CA for Galaxy repairs.
VE3MYC
Shadetree Mechanic
Delaware Base Station 808
It is a shame to get something new like that and not have it work correctly. Have you called Copper?
No, it comes with a notice from Copper that they do not accept returns. If there is any trouble with the unit it must be returned to Texas Star for service.
Connect a 2KW dummy load in place of the antenna and see what the VSWR does then.
That is the only way that the repair shop operates and test the Texas Star amps.
I have experienced the same issues as you describe with my DX1600 and also my DX500V Texas Star amps. They behave quite differently with a dummy load than with an antenna.
With that being said, my Sweet Sixteen also starts out with a 1:6 SWR back into my radio without being turned on and using the antenna. On a dummy load, the SWR falls down to 1:2 ..... I use meters after my radio, and after my amplifiers.
With modulation, the SWR will go from 1:5 to 1:8 .......
I use it that way. But I am planning to go into it and retune the input capacitors of the amp, and the output capacitors also if needed.
That is the only way that the repair shop operates and test the Texas Star amps.
I have experienced the same issues as you describe with my DX1600 and also my DX500V Texas Star amps. They behave quite differently with a dummy load than with an antenna.
With that being said, my Sweet Sixteen also starts out with a 1:6 SWR back into my radio without being turned on and using the antenna. On a dummy load, the SWR falls down to 1:2 ..... I use meters after my radio, and after my amplifiers.
With modulation, the SWR will go from 1:5 to 1:8 .......
I use it that way. But I am planning to go into it and retune the input capacitors of the amp, and the output capacitors also if needed.