Okay a follow up. I disassembled the TX-500 and used a multimeter. I found there is a short between the CENTER PIN and GROUND on the BNC; both inside and out. Any suggestions on where to look to resolve this?
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I've been using the ATU-10 with the 1.5 firmware and it seems to work vey well on my TX-500 using the rf sensed tuning and manual tuning.
It also works on the IC-705 using the cable for the Icom. The matching range compares favorably to the MAT-705 and the Z-11 tuners but I have not tried every possible load configuration.
It seems to have longer battery life than the MAT-705 but it does take a button push to wake it up.
Dave, N4ELM
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Thank you Tim.
73 Jo - F5NFB
On Mon, Jan 23, 2023 at 5:35 AM Tim Fairbairn < af6tf.tim@...> wrote: As can be found in many other similar threads, the TX-500 pulls to ground to activate external amp's PTT input. This sounds like exactly what the amp you describe wants.
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Grace & peace,
Tim AF6TF
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As can be found in many other similar threads, the TX-500 pulls to ground to activate external amp's PTT input. This sounds like exactly what the amp you describe wants.
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Grace & peace,
Tim AF6TF
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Re: Amp for Lab599, TX500
Wow! I see the qrp store is now pushing a PA500 with a battery pack and frame-a-thing for just a mere $3200 - LOL
What is this dude in Germany thinking? (perhaps he thinks he has same quality as Elecraft?) -? IMHO - Way-Too-Expensive (but, hey good try with the bundling-bait!)
Personally,? I would rather buy 2 more TX-500's (@1300 ea from HRO) and a PA50 AND a battery from bioenno or even add a SteppIR to the mix!
()?
Thoughts?
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Re: Amp for Lab599, TX500
Yes, fo sure, you would want a solid PTT from the radio and NEVER a VOX type transmission!
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Re: Amp for Lab599, TX500
Yes and it only covers from 3.5 to 24 MHz only
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On Sun, Jan 22,
2023 at 01:21 AM, ve3ega wrote:
It does look good but as yet it is not known whether there is
protection from back emf from the relays (no circuit diagram) or
how good harmonic suppression is yet (my guess is that will be
ok). I would be a bit nervous of using its auto rf detection
circuit.
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On Sun, Jan 22, 2023 at 03:54 AM, Piotr Majkrzak wrote:
Any of you tried the mat-705?
I had the MAT-705Plus version purchased new last year from Vibroplex that I used with my IC-705. It worked OK but struggled to find a few tuning solutions on my 80m delta loop, which my Palstar HF-AUTO had no trouble with. I could live with that but I ended up returning it because the battery life was horrible. Ultrafire (the battery vendor)?told me that they do not sell a "blue" 10440 1000mAH battery (like the one inside the mAT-705Plus tuner). The only 10440 battery they sell is "gray" and 500mAH. So it would seem the battery was probably counterfeit/fake. How well it works or not is up to the user to determine. Vibroplex told me I should get "months" of use on a single charge but I was seeing maybe 3 days of intermittent use. Emails about this to the tuner manufacturer and Vibroplex went unanswered. I was not satisfied and returned it for a refund. YMMV. ? -- 73, Norm/KC1BMD
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Re: Amp for Lab599, TX500
On Sun, Jan 22, 2023 at 01:21 AM, ve3ega wrote:
https://www.youtube.com/watch?v=Vz7o9k-0fEs&ab_channel=MikeCU3HYMaciel
It does look good but as yet it is not known whether there is protection from back emf from the relays (no circuit diagram) or how good harmonic suppression is yet (my guess is that will be ok). I would be a bit nervous of using its auto rf detection circuit. 73
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hook up a meter w/dummy load, send cw, or whistle to check?
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SOTA tuner or MFJ 16010 - no batteries
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Mat-705 doesnt have latching relays and must stay on ?and drain battery.
I wasnt happy with mine and sold it.
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Any of you tried the mat-705?
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I've been using the Elecraft T1 for a couple of years now on many different antennas. No issues at all and still on the first battery.
73 de Robert DC1RDB
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The MAT-10 is very good. I prefer the T1.
-------- 原始信息 --------
发件人： "David WA7TNT via groups.io" <carpediem1958@...>
日期: 2023/1/22 02:43 (GMT+08:00)
主题： Re: [Lab599] Tuner for tx500
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On Jan 21, 2023, at 8:33 AM, Richard Meal <mw0rgm@...> wrote:
?
Interested in the mAT-10 myself (for use with the TX500), so would be interested in comments on this one too.
Richard M0RGM
Elecraft T-1
Emtech ZM-2 ATU
????? ??Sent from my iPhone.......?
?I was looking at that, as I had heard good things about it, but it looked like I might be pushing it for digital use. I really don't want to burn out a really nice expensive piece of gear.
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Thanks, where did you buy yours ?
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They are when the tuner is on. It has latching relays so you can turn it off after tuning and it retains its settings. Used this way,?the battery lasts indefinitely. I charge mine out of caution but have never run it dead.
Gary
Sent from Proton Mail for iOS
On Sat, Jan 21, 2023 at 18:28, VA3SYS < i0x915@...> wrote: Are those led lights on all the time ?
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Hi Folks check out "Micro-PA50"
https://www.youtube.com/watch?v=Vz7o9k-0fEs&ab_channel=MikeCU3HYMaciel
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ve3ega
Norm - KC1BMD
kg4zqz
7MYM BD