Technical News

Support



01. New Firmware for ACOM 2020S Amplifiers  |  20-May-2024
We, the ACOM company, announce the availability of a new firmware version for our solid-state amplifier model ACOM 2020S as follows: All firmware versions are available to our customers free of charge and can be downloaded from the corresponding product pages (the link above).

    We highly recommend updating your ACOM solid-state amplifier with the above firmware.

02. New Firmware for ACOM 500S, 600S, 700S, 1200S, and 2020S Amplifiers  |  19-Feb-2024
We, the ACOM company, announce the availability of new firmware versions for our solid-state amplifiers as follows: All firmware versions are available to our customers free of charge and can be downloaded from the corresponding product pages (the links above).

    We highly recommend updating your ACOM solid-state amplifier with the above firmware.
    Please follow the firmware update instructions described in your amplifier User's Manual.

There are many improvements in the firmware, but one cannot go unmentioned:
Active automatic protection.
This protection is highly complicated to implement (as a hardware and software solution), but ACOM spared no time and money, and it is now available to our customers.
We proudly call this ACOM Customer Care.



Support



Helpful Tools for Firmware Update

To start the firmware update procedure a PC with RS-232 interface is needed. Nowadays, most computers do not have a built-in RS-232 interface and this creates a problem.

But, fortunately, you are an ACOM customer and we have a solution. Currently, all computers have a couple of USB ports. So, you need a USB to RS-232 interface converter.

    The ACOM recommends using "USB to RS-232" converters produced by FTDI (www.ftdichip.com) or based on an FTDI chip.

Below are shown two devices (interface converters) tested and approved by ACOM for use with our amplifiers:
  • USB (Type-C connector) to RS-232 (Serial, 9-pin, D-sub male connector), 1 m cable, USB 2.0 standard
    • Producer Digitus, PN: DA-70166. This converter can be ordered from TME (www.tme.eu), PN: DA-70166;
  • USB (Type A connector) to RS-232 (Serial, 9-pin, D-sub male connector), 2 m cable, USB 2.0 standard
    • Producer FTDI, PN: UT232R-200. This converter can be ordered from DigiKey (www.digikey.com), PN: 768-1084-ND, or Mouser (www.mouser.com), PN: 895-UT232R-200, or Farnell (www.farnell.com), PN: 2352013.

Support



For current prices and availability, get in touch with our Customer Service Department | Technical Support Team directly.

03. Company Statement About GU74B Tube Availability  |  01-Dec-2023

According to our company's policy for transparency, we want to share important information about the future of our well-proven tube-based amplifiers ACOM 1010, 1000, and 2000A. These amplifiers, built upon the GU74B tube from Russia, face a shift in their sourcing due to prevailing political and economic circumstances. Regrettably, the use of Russian tubes in our amplifiers is no longer possible, owing to EU restrictions on imports.

There is no cause for concern. We have good news, and the future of our amplifiers is bright.
We worked hard in the last two years, and now we have a NEW 4CX800A tube – a functional replacement of the GU74B.


Support



Starting from January 1st, 2024, we take profound satisfaction in production the amplifier models 1010, 1000, and 2000A exclusively with these NEW 4CX800A tubes. We strongly encourage you to take prompt action and seize the opportunity to place an order for your new amplifier today.
Also, starting January 1st, 2024, we will only offer our NEW 4CX800A tube as a spare part and a replacement for a GU74B tube.


The new tubes 4CX800A are produced in China by our long-time supplier and producer of 4CX1000A tubes. ACOM invested a significant amount of money to develop our tube testing processes and special tube testing measuring equipment. All new tubes are tested in the factory with the ACOM's developed and manufactured equipment to our quality and technical requirements.

For current prices, kindly refer to our esteemed dealers or get in touch with our Customer Service Department | Technical Support Team directly.

04. Understanding SWR by Example  |  17-May-2024

As we often have questions about Standing Wave Radio in connection with the usage of our amplifiers and tuners we recommend reading the article written by Darrin Walraven (K5DVW) and published in ARRL QST in November 2006 (the article is available at www.arrl.org also).


Understanding SWR

Download article | PDF file

05. Our Policy on Amplifiers Frequency Coverage (e.g. MARS frequencies)  |  15-May-2024

Due to FCC regulations in the USA, EU regulations, and similar government regulations worldwide, ACOM can not legally modify the transmitting frequency range of its HF amplifiers.
In specific business cases, extensions or changes of the frequency coverage can be discussed, but this must be agreed upon before ordering. In any case, this is not the producer's obligation and can not be against local rules and laws. However, the purchase of an unrestricted HF amplifier must be made by a Government agency directly from some of our authorized dealers or by us.

The MARS (Military Auxiliary Radio System in the USA) used frequencies outside legal amateur bands. In general, any HAM user must follow the applicable regional band plans and laws for specific allocations and limitations. I.e., doing any kind of modifications of our amplifiers that you own are solely at your own risk and your responsibility.

Please get in touch with your local dealer for detailed information and possible solutions.


Support
06. ACOM Quick Guide for Hams  |  09-Feb-2022

The most used codes, terms, and abbreviations in amateur radio practice can be found in this guide.


ACOM Quick Guide for Hams

Download article | PDF file

07. ACOM 600S Upgrade for Use with 04AT or 06AT antenna tuners  |  14-March-2022

The ACOM 600S units with a Serial Number greater than 170105 can be used with the ACOM 04AT or 06AT antenna tuners without problem.
The amplifiers with smaller Serial Numbers (mainly produced before 2017) must be in-factory upgraded to work with our antenna tuners.