Interfacing with ACOM amplifiers

JJ4SDR
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Location: TEXAS, USA

Interfacing with ACOM amplifiers

Postby JJ4SDR » Tue Nov 30, 2021 9:50 pm

I will be using an ACOM amplifier within a few weeks (depends on how bad the supply crunch is). My radio is ANAN 7000 DLE MKII (Black Edition).

The ACOM manual states (this is in regards to the "KEY-OUT socket" on the back apron of the amplifier):

"The KEY-OUT socket provides an extra control signal from the amplifier to the transceiver. It could be used to improve the transmit/receive (TX/RX) switching safety.

NOTICE:
KEY-OUT is a low-power open-drain output, make sure that the signal voltage coming from the respective transceiver connection does not exceed 50 VDC (open circuit) and the closed-circuit current is below 20 mA.

If your transceiver has a suitable input that disables transmission unless grounded externally, we recommend that you connect it with a shielded cable terminated in a Phono (RCA) connector to the KEY-OUT socket of the amplifier.

ACOM will operate normally with KEY-OUT unconnected if your transceiver has no such input........"


Am I being overly cautious in thinking that I may want to run a phono cable between the KEY-OUT socket of the ACOM and "Connector #16, Digital-IN" ("transmit inhibit") of the ANAN? In theory, this connection is NOT needed, but I would think having the cable there would be "extra insurance."

Would appreciate comments and thoughts on the above!

Best!
JJ
PC: 8 Core i7-10700 CPU @ 2.90GHz, NVMe SK Hynix 512 GB SSD, 32GB RAM
Windows 10 Home, Version 22H2
Thetis v2.10.4.3 x64
Protocol 2 v2.1.18
JJ4SDR
Posts: 436
Joined: Fri Jul 30, 2021 10:09 pm
Location: TEXAS, USA

Re: Interfacing with ACOM amplifiers (still awaiting comments)

Postby JJ4SDR » Sat Dec 04, 2021 12:42 am

I can’t believe I am the only ANAN 7000 DLE MKII user who will hook it up to an ACOM amplifier :roll:

Is what I was suggesting (using two cable between the ACOM and the ANAN) too elementary a question :lol:

Would appreciate comments!
JJ
PC: 8 Core i7-10700 CPU @ 2.90GHz, NVMe SK Hynix 512 GB SSD, 32GB RAM
Windows 10 Home, Version 22H2
Thetis v2.10.4.3 x64
Protocol 2 v2.1.18
dl4zbg
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Re: Interfacing with ACOM amplifiers

Postby dl4zbg » Sat Dec 04, 2021 7:19 am

Good morning "JJ",

I've been running my 7000DLE/ACOM2000A combination for quite a while.
DDUTIL interface works ok.
I never tried to use "Key Out".

Normally I do not write replies which cannot be helpfull for the starter of a topic.

73

Volker

DL4ZBG
JJ4SDR
Posts: 436
Joined: Fri Jul 30, 2021 10:09 pm
Location: TEXAS, USA

Re: Interfacing with ACOM amplifiers

Postby JJ4SDR » Sun Dec 05, 2021 6:48 pm

Guten Tag Volker!

I appreciate your response.

Perhaps I email ACOM on this. All I am wanting is extra “safety” when using the ACOM1000 with the ANAN. Surprised at not having gotten many responses on this.

Best regards,
Juha
(NI2M, I also sign
OH1HX)
PC: 8 Core i7-10700 CPU @ 2.90GHz, NVMe SK Hynix 512 GB SSD, 32GB RAM
Windows 10 Home, Version 22H2
Thetis v2.10.4.3 x64
Protocol 2 v2.1.18
User avatar
kc2rgw
Posts: 165
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Re: Interfacing with ACOM amplifiers

Postby kc2rgw » Sun Dec 05, 2021 10:26 pm

I think you are over thinking it.
JJ4SDR
Posts: 436
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Location: TEXAS, USA

Re: Interfacing with ACOM amplifiers

Postby JJ4SDR » Sun Dec 05, 2021 11:01 pm

You are probably right. Doug - W5WC - emailed me to the same effect.

Below, a direct quote ( I don’t think he minds me including it here) on my email where I specified that I am using the ANAN 7000 DLE MKII Black Edition.

“Just my initial quick thoughts on the matter. Yes, you’re being overly cautious. I think that the Digital-IN requires an external ground to inhibit the tx. I had added a reverse switch in the software but the firmware developer hardcoded it in the firmware. Maybe it would add some latency if you’re on CW.”
PC: 8 Core i7-10700 CPU @ 2.90GHz, NVMe SK Hynix 512 GB SSD, 32GB RAM
Windows 10 Home, Version 22H2
Thetis v2.10.4.3 x64
Protocol 2 v2.1.18
WR4N
Posts: 91
Joined: Thu Jan 21, 2021 3:29 am
Location: Tennessee

Re: Interfacing with ACOM amplifiers

Postby WR4N » Tue Dec 14, 2021 4:09 am

ACOM 1500 & ANAN 7000 DLE MII “BLACK BOX”: No KEY OUT. They work great together. I do use an Ameritron Amplifier Transceiver Keying Interface ARB-704
RADIO: ANAN 7000 DLE MK2 (Black Version) Thetis 2.8.11.
PC: HP Desktop - Intel Core i7 (10th Gen) - 16GB memory - 512GB SSD - Intel UHD Graphics 630 - WINDOWS 10 (100% Dedicated to ANAN)
PS: ASTRON 35 AMP (100% Dedicated to ANAN)

Best 73s,
WR4N - David

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