Andrews Communications stocks Australia's largest range of
amateur radio linear amplifiers!
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TOPTEK PA-500WH 160m~10m amplifier
NOW ONLY...A$1699
PLENTY IN STOCK!
Free freight Australia-wide!
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ALL-NEW LINEAR AMPLIFIER!
MLA400
500W RF output
160m~10m
linear amplifier with 4 x 2SC2879s
and bandpass filters! Due late 2024!
Mock-up image of MLA400 doesn't show LEDs & switches.
Pricing and specifications are subject to confirmation!
Appearance of amplifier may vary from
illustration above
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NEW! HLA-300V BLACK
160m~10m linear amplifier!
PLENTY OF MOST RM LINEARS IN STOCK!
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SUPER SUCCESSFULLY SERVICING AMATEUR RADIO
AMPLIFIERS TO >99% SUCCESS RATE SINCE 1976!!
PLEASE NOTE; SHOP HOURS ARE 9am~4pm, Monday~Friday!
AMEX, MASTERCARD and VISACARD WELCOME HERE!
LINEAR AMPLIFIER NOTES
Please choose products carefully or firstly ask us re their
suitability, as lately we have noticed more customers are
ordering incorrect, non-matching or unsuitable products
for their application and/or performance expectations.
We've also noticed increasing numbers of customers who
purchase linear amplifiers are not providing adequate RF
grounding for their amplifiers and their antennas! Install
large surface area copper strap/sheet of minimum 50mm
in width and 1mm in thickness. Ordinary wire should not
be used for RF grounding as wire has far higher impedance
(RF resistance) and inductance than copper strap/sheet.
Copper braid can be used but copper strap/sheet is best!
Antennas must have a high enough power rating and be
located a good distance away
from those amplifiers to
minimise RF intrusion/feedback/interference. Vertically
polarised antennas must be located higher (or lower) than
the horizontal level of the station transceiver & amplifier!
Please
check with us a day prior if you wish to purchase a
large amplifier
personally from our store (as some large
amplifiers are at our warehouse), so we can ensure it
will be in our store for
you to collect. Please note that
we can't accept Australian Money Orders over A$1,000.
PLEASE NOTE; SHOP HOURS ARE 9am~4pm,
Monday~Friday!
WE DO NOT REPAIR AMPLIFIERS WHICH WE NEVER SOLD OR COMMERCIAL
RADIO RF AMPLIFIERS, e.g. HENRY, TPL, ETC.
WE AIRMAIL TO
NEW ZEALAND, NOT AIR-COURIER/FREIGHT
Most amplifiers ordered from us ship out same day or next day!
All our
RF linear
amplifiers are rated up to only 50% duty cycle!
Some solid-state linear amplifiers have NO DC cables included.
Any/all amplifier damage
caused by RF overdrive, overvoltage,
reverse polarity,
corrosion, acts of God, adverse environment,
transmitting into
>2:1 SWR, etc., is not covered by warranty!
Warranty strictly covers
only
manufacturing faults.
Warranty cover is not insurance cover, of
course.
We quote and accept Australian dollars only!
Please order by phone; 02 9688 4301/9636 9060/9896 8972,
by email;
radioandrews@hotmail.com
or by mail;
P.O. Box 240, Pendle Hill, NSW,
2145.
Page updated 21-10-24
World's most popular valve/tube HF linear amplifiers! |
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AL-811H HF 800W+ linear amplifier Sold out! Pricing and
availability subject to change due to stock, exchange
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AL-811HD Heavy Duty HF linear amplifier Sold out! Pricing and
availability subject to change due to stock, exchange *************** We have traded in a ***************
"The AL-811HD is a magic linear" |
NOTES
Please consider transit insurance because we are
not responsible for loss of parcels or damage sustained by parcels - the
carrier is responsible! We do pack well!
We don't offer any replacement
warranties on any product. Please ensure you select the same band of operation of your linear amplifier as the band of operation of your transceiver. Also, please ensure that your amplifier's relay line is connected to your transceiver's relay socket. We can repair your AL-811 series amplifier. We can greatly improve its stability, too! Contact us now! Lee recommends that if you're considering purchasing a new or used Ameritron AL-811 series linear amplifier from anyone or anywhere to make sure that all necessary upgrades have been properly completed, especially regarding the amplifier's parasitic suppression circuit design!
If you want a brand new AL-811 series
amplifier retuned to favour either the very bottom or very top of a
band then that can usually be done over a weekend. There is usually
no charge for this retuning when purchasing a new AL-811 series
amplifier, if it's requested prior to the actual sale. ************************ AL-811HD report Tommy says...My expectations are blown away by how well the
AL-811HD works! I understand Best wishes, Tommy. ************************
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Notes regarding the repairing of ageing linear amplifiers.
If your old AL-811 series
linear amplifier doesn't already have a good parasitic suppression printed
circuit board & good 811A tubes, along with being in good
overall condition and less than 20 years old, then it may not be
economical/worthwhile to repair!
The repair procedure may take several months to successfully complete, and especially so if we have to conduct many searches to find rare or special parts.
We do have some AL-811-series parts
in stock, such as the main HT RF choke (A$79 @ 23-03-23), Please note that 572B tubes can be quite expensive to purchase new, these days, due mainly to COVID related costs issues. Some Chinese tube/valve factories have suffered severe fire damage, too! ************************ RF POWER TRANSISTORS/FETs
We have received some high RF output
power transistors & FETs These high power RF transistors & FETs are listed in a similarly titled chart halfway down this page...
If you have a faulty 12Vdc HF or
HF/6m solid-state linear amplifier |
Ameritron HF valve linear amplifiers Prices are subject to confirmation due to variations in exchange rate, freight costs, etc., per shipment. Prices listed in the chart below are indicative only. |
|
Type | Price $(AUD) |
Listed prices are subject to change without notice or obligation due to exchange rates and freight costs adversely affected by coronavirus... | |
AL-1500 3CX1500/8877 x 1 valve; provides 1500W+ SSB output | $9999.00 |
AL-1200 3CX1200A7 x 1 valve; provides 1500W SSB output | $8999.00 |
AL-82 3-500Z x 2 valves; provides 1500W SSB output | $7499.00 |
A deposit of 50% of your order will be required |
ACOM LINEAR AMPLIFIERS ACOM factory-authorised factory-direct importer! Genuine ACOM factory-backed Australian one-year warranty on amplifiers & 1-year warranty on tubes. Fast airfreight delivery of linears direct from ACOM! Most ACOM amplifier models have short lead times. Due to the unavailability of Russian GU-74B tubes, ACOM is fitting new, upgraded design, GU-74B (4CX-800A) tubes to 1010, 1000 & 2000A linear amplifier models from 01-01-24. ACOM helped a Chinese tube manufacturer to design, test and improve their GU-74B tubes over recent years!
Lee visited ACOM's Bulgarian factory on
Friday, 28th September, 2018 and was amazed! ACOM has a very modern
& supremely capable manufacturing facility.
Please check with us a
day prior if you wish to purchase a |
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ACOM 1500
Email received 17-04-19; Hi Lee! An
update for you regarding the 1500. Works really well. Happily
delivering 1500W+ in my favourite bands. Very happy! Thank you for
your patience and understanding. Cheers, Wayne. |
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ACOM 2100
160m-6m 1,500W RF output
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ACOM 2000A 160m-10m 2,000W RF output AUTOMATIC linear amplifier Automatic built-in Pi-L antenna tuner matches up to 3:1 SWR
"Ecstatic" is the true
feeling when amateurs operate ACOM's 2000A!
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ACOM 1010
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160m-6m 1,000W RF output Pricing and availability will be listed here when confirmed!
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ACOM
2020S Pricing and availability will be listed here when confirmed! Info below is subject to confirmation!
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ACOM 1200S Pricing and availability will be listed here when confirmed!
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ACOM 700S
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NOTES Andrews Communications Systems is an ACOM factory fully authorised and supported importer. Owners and/or importers of parallel-imported ACOM products are welcome to pay us to repair their faulty Acom amplifiers. ACOM's factory & headquarters is located in Sofia, Bulgaria. ACOM website; www.acom-bg.com Check the list of ACOM world-wide authorised dealers at... http://www.acom-bg.com/dealers.html ********************* A sales receipt copy must accompany each warranty claim *********************
Listed prices subject to change
without notice or obligation due |
SERVICE NOTES A sales receipt copy must accompany each warranty claim. Please include your name, address, email and phone number. |
Linear amplifier relay cables, adaptors and accessories | |
Type | Price $(AUD) |
YAESU-compatible 8-pin mini-DIN to RCA plug cable assembly. Suitable for Yaesu SSB transceivers which have a 8-pin mini-DIN fitted at their rear panel and labelled LINEAR... |
$99.00 Plenty in stock as @ 17-11-22! |
We may have 10-pin mini-DIN to RCA plug cable assemblies later in 2023... | $T.B.A. |
NEW RF power valves/tubes
Availability of listed models is subject to confirmation. |
|
Type | Price $(AUD) |
811A - linear amplifier valve (60W plate
dissipation) --> NEW! |
$129.00 each Limited or no stock!! |
572B - linear amplifier valve (160W
plate dissipation) --> NEW! RFP brand 572Bs in stock! PENTA brand 572Bs in stock! |
NEW LOW PRICE! Now $299.00 each Limited or no stock! |
Limited or no stocks of listed valves. NO other valves are available. All valves listed are subject to availability. |
P.O.A |
Listed prices are subject to change without notice or
obligation and are based on seafreighting from the USA. Airmailing
from USA costs extra. Availability of above valve/tube models are subject to confirmation. Prices are confirmed for valves/tubes currently in stock! |
Surplus valves --> very limited stock | |
Type | Price $(AUD) |
All valves are subject to availability | Price for each! |
1B3GT | $9.00 |
5AS4 | $9.00 |
6AV6 | $9.00 |
6AW8A | $9.00 |
6BL8 | $9.00 |
6BX6 | $9.00 |
6CB6A | $9.00 |
6CK6 | $9.00 |
6DQ6A | $9.00 |
6DT6 | $9.00 |
6DX6 | $9.00 |
6EH7 | $9.00 |
6E7J | $9.00 |
6U9 | $9.00 |
6X9 | $9.00 |
Factory direct importer RM ITALY LINEAR AMPLIFIERS!! Outstanding quality, value and performance! One year warranty excluding RF output devices Most RM solid-state amplifiers require DC cables! PLENTY OF MOST RM ITALY LINEARS IN STOCK!
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All-new design
MLA400 500W RF
output 160m~10m linear amplifier w/4 x 2SC2879s
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NEW 1.8~54MHz 600W LINEAR AMPLIFIER! BLA-600...$4999 AUD Sold out! Place your order
HF+6m (1.8MHz~54MHz) ~600W SSB output
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MOST RM solid-state 12V amplifier models require DC cables! |
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NEW
HLA-305V Yes, TWIN cooling fans
fitted! Sold out! Shipment due soon!
Up to 360W pep SSB RF output 160m~10m
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MOST RM solid-state 12V amplifier models require DC cables! |
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NEW HLA-300V Black Yes, TRIPLE cooling fans fitted! (V=fans) $1399 AUD
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MOST RM solid-state 12V amplifier models require DC cables! |
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$899 AUD
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New KL-506 Black **NEW LOW PRICE!**
Now
$799 AUD PLENTY IN STOCK!
Up to 360W pep SSB RF output
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MOST RM solid-state 12V amplifier models require DC cables! |
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New
KL-405V Black
Now...$499 AUD PLENTY IN STOCK!
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New KL-405 Black $449 AUD SOLD OUT! Shipment due soon!
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MOST RM solid-state 12V amplifier models require DC cables! |
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MLA-100V
NOW...$1199 AUD Up to 120W RF out 160m~6m (1.8MHz~54MHz) amateur
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MUA-100 (UHF) $1499 AUD Now up to 120W o/p!! PLENTY IN STOCK! Note; The link below is in Italian. Simply use Google Translate to translate into English language...
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MOST RM solid-state 12V amplifier models require DC cables! |
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NEW UHF AMPLIFIER!! LA-435 (UHF) $799 AUD Up to 60W o/p!! SOLD OUT! Shipment due soon!
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LA-250 (VHF)
$1399 AUD
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MOST RM solid-state 12V amplifier models require DC cables! |
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Listed prices are subject to change without notice or obligation due to recent exchange rate variations. A genuine sales receipt copy must
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Complete KL-400~405/KL-500~506 amplifier series RF ************************
Large black KL-series amplifier series DC input plug ...A$20 ea. ************************
Small green MLA/MUA-series amplifier DC i/p plug...A$20 ea. |
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TOPTEK is Taiwan's BEST amateur radio HF, VHF & UHF amplifier manufacturer! TOPTEK
LINEAR AMPLIFIERS! Most TOPTEK
amplifiers have a receive preamplifier.
New 500W RF o/p 1.8~30MHz linear amplifier! NEW LOW PRICE!
PA-500WH..A$1699
PLENTY IN STOCK!
The TOPTEK PA-500WH is a high output
solid-state amateur radio HF/MF
linear amplifier!
The TOPTEK PA-500WH employs 4 x 2SC2879
We recommend using a set of external
switchable band pass filters covering the 160m~10m bands to reduce
harmonic output when operating below 28MHz/10m.
If your PA-500WH has
its large cooling fan mounted inside
The PA-500 series of amplifiers were
created by TOPTEK at our
2m band 350W RF output linear amplifier!
New
TOPTEK PA-350V 2m band 350W RF output
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PA-200V/C...A$999
PA-200V/C 2m band 200W RF output linear *****************************
PA-150U-05...A$1999
PA-150U-05 UHF band linear power
amplifier.
Extensive protections for RF over-drive, high
Size; 180 w x 90 h x 285 d mm. Weighs
~3kg. |
High power output RF transistors & FETs Limited stock of some solid-state RF power devices MRF-255, MRF-455, SD1446, 2SC2879 & 2SC2904
List below updated 14-10-24 |
|
Type | Price $(AUD) |
Bold type indicates product is either in stock
or due soon. List information is subject to to change without notice or obligation. |
Contact us for latest info |
MRF150 (Macom brand) | $119 each transistor! |
MRF-247 80W VHF | $119 each |
MRF-255 55W HF/6m (Alinco, Japan) Sold only in pairs |
$149 each transistor! Limited stock! |
MRF-455 60W HF (RM Italy) Sold only in pairs |
$99 each transistor! PLENTY IN STOCK! |
MRF-630 | $69 each transistor |
MRF-648 | $119 each transistor |
MRF-650 60W UHF | $119 each transistor |
RD70VHF1 | $119 each transistor |
SD1446 70W HF (RM Italy & Toptek, Taiwan) Sold only in pairs |
$99 each transistor! PLENTY IN STOCK! |
SRF2072 60W HF | $69 each transistor |
2SC2097 80W HF | $99 each transistor |
2SC2381 UHF driver | $119 each transistor |
2SC2695 UHF | $99 each transistor |
2SC2879 100W HF (Toptek, Taiwan) Sold only in pairs |
$99 each transistor! PLENTY IN STOCK! |
2SC2904 100W HF (Alinco, Japan) Sold only in pairs |
$129 each transistor Limited stock! |
2SC2905 45W UHF | $79 each transistor |
2SC4989 60W UHF | $129 each transistor! |
It's essential to replace faulty RF power devices in
pairs where pairs are fitted in an amplifier, so as to maintain best
amplifier reliability! This is because, in most instances, only one
RF power device may measure faulty when measuring device resistances
with a multimeter BUT the other device is often partially damaged re
its RF performance. Therefore, in the following weeks or months of
operation, the partially damaged device is quite likely to fail
which then causes the newly replaced device to also fail due to
this unbalanced sharing of RF output power.
This means that BOTH RF devices MUST then be replaced!! In amplifiers which have, say, four RF power devices in a push-pull/parallel configuration of two push-pull amplifier pairs in parallel, each employing two RF power devices, the "port to port" isolation between each push-pull amplifier is usually sufficient (>-30dB) to prevent one damaged amplifier from damaging the other amplifier. This means that, in most instances, only ONE pair of transistors in one push-pull amplifier will need replacing, NOT both pairs. "Port to port" isolation increases by about 10dB when employing solid bendable coaxial lines between each push-pull amplifier. Such coaxial lines are sometimes seen in high-specification UHF amplifiers. |
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Other types may be available to order. Please ask us
for details. HF specification transistors listed above are sold only in pairs. All transistors are subject to availability. |
P.O.A |
RF power modules Minimum order value A$20.00 |
|
Type | Price $(AUD) |
Many types available...call us to order | P.O.A |
FETs and MOSFETs Minimum order value A$20.00! |
|
Type | Price $(AUD) |
MGF1302. Has extra low NF (noise figure). Plenty in stock as @ 29-06-21 |
$29.00 Plenty in stock |
3SK121Y | $19.00 |
Andrews DX-1600 series of linear amplifiers |
The DX-1600 is a class AB1 passive grid high power RF amplifier
using the Svetlana 4CX-1600B external anode ceramic tetrode
valve. This amplifier is a combination of the latest technology,
the best components and state of the art circuit design. The
result is truly world class.
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ALPHA linear amplifiers operate only within the authorised amateur radio bands. They do not have continuous frequency coverage across 3~30MHz! Australia's only Alpha factory-authorised direct importer! Our authorised sales and service area encompasses Asia (inc. Japan & China), Pacific, Oceania, Australia and N.Z. Four year warranty on amplifiers, one year on tubes! Please contact us for current pricing!!
All quoted prices are subject to change
without notice |
ALPHA 9500 Automatic tuning/loading 1.5kW RF output HF linear amplifier! Automatic built-in Pi-L tuner matches up to 3:1 antenna SWR Utilises one rugged 3CX-1500A7/8877 triode! Pricing and availability will be listed here when confirmed!
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ALPHA 8410 Manual tuning 1.5kW RF output HF linear amplifier Utilises TWO 4CX-1500B tetrodes in parallel! Pricing and availability will be listed here when confirmed!
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MIRAGE 6m, 2m & 70cm amateur radio RF amplifiers Prices listed are subject to
change without notice |
MIRAGE A-1015G 6m 10W RF input --> 150W RF Pricing and availability will be listed here when confirmed! *************************
MIRAGE B-34G 2m 2W RF input --> 35W RF Pricing and availability will be listed here when confirmed! *************************
MIRAGE B-310G 2m 3W RF input --> 100W RF Pricing and availability will be listed here when confirmed! *************************
MIRAGE B-5018G 2m 50W RF input --> 160W RF Pricing and availability will be listed here when confirmed! *************************
MIRAGE B-2518G 2m 25W RF input --> 160W RF Pricing and availability will be listed here when confirmed! ************************* MIRAGE B-1018G 2m 10W RF input --> 160W RF Pricing and availability will be listed here when confirmed! ************************* MIRAGE B-320G 2m 50W RF input --> 200W RF output linear amplifier w/GaAsFET receive preamp 2m 200W RF output (144~148MHz) Pricing and availability will be listed here when confirmed! *************************
MIRAGE D-3010N 70cm 30W RF input --> 100W RF Pricing and availability will be listed here when confirmed! *************************
MIRAGE D-1010N 70cm 10W RF input --> 100W RF Pricing and availability will be listed here when confirmed! ************************* MIRAGE D-3010NR 70cm 12W RF input -->
80W RF Pricing and availability will be listed here when confirmed! *************************
MIRAGE BD-35 144/430MHz DUAL-BAND
AMPLIFIER Pricing and availability will be listed here when confirmed! ************************* Order w/deposit required for all
MIRAGE amplifier models.
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Baojie amateur radio HF, VHF and UHF linear amplifiers Factory direct importer
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Baojie BJ-450U Pricing and availability will be listed here when confirmed!
Features; |
Baojie BJ-150V Pricing and availability will be listed here when confirmed!
Features; |
Please choose products carefully or firstly ask us re their |