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Reviews Categories | Transceivers: HF Amateur HF+6M+VHF+UHF models - not QRP <5W | Alinco DX-SR9 Help

Reviews Summary for Alinco DX-SR9
Alinco DX-SR9 Reviews: 3 Average rating: 3.7/5 MSRP: $799.00
Description: Hybrid all mode HF transceiver with IQ / SDR capability.
Product is in production.
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KZ4B Rating: 5/5 Sep 17, 2016 23:08 Send this review to a friend
Forget SDR/Great for AM & SSB/So Misunderstood XCVR  Time owned: 6 to 12 months
This XCVR is great for what it is! Read on...

ALINCO/REMTRONIX mis-marketed the SDR9(T) as a VIABLE SDR (capable) Transceiver. All they did was provide for dedicated/built in audio/relatively low frequency digital input/output ports on the DX-SR9(T) XCVR REQUIRING the user to provide an EXTERNAL personal computer (PC) with dual/input & output sound card interface plus freeware or other DSP Software just to get AUDIO FREQUENCY DSP capability and (limited Computer Control??) of the XCVR. This is a case of going around your elbow to get to your rear end when you can do everything you need with a bhi Ltd. or West Mountain Radio "Clear Speech"/ Audio DSP Amplified External Speaker costing $200+ new. Note that for AM operation Audio DSP has advantages over IF DSP for hetrodyne removal so as to not notch out the AM Carrier. The "Clear Speech" Audio DSP can also be useful for SSB & CW and includes meaningful white (and other noise) reduction. The "Clear Speech" DSP only Processes RECEIVE audio. TRANSMIT Audio is excellent to begin with with most mikes so generally requires no processing. Furthermore--reviews indicate that no one could ever make transmit audio processing work with an external PC. In other words external audio DSP is very desirable--but forget the external computer and use a relatively inexpensive amplified speaker with built-in audio DSP.

In "stock" form the DX-SR 8 & 9(T) transceivers
utilize three MURATA 4 Pole Ceramic Filters in the 455 kc IF. For AM, SSB, & CW bandwidths one can select both normal (wide) and narrow widths. At 6 db down the AM wide bandwidth is 6 khz and narrow is 2.5 khz. This is very desirable for AM operation. SSB wide is the same as AM narrow (i.e. 2.5 khz) while SSB narrow is listed as 1.0 khz (in ALINCO Specifications) but sounds more like 2.0 khz. CW appears to be a 500 hz audio filter on top of the "1.0 khz" filter. Operation with "stock" filtering is quite good--but can be significantly improved with the INRAL/COLLINS Filter option(s).

See our recent (KZ4B) Review under REVIEWS/HF TRANSCEIVERS/ALINCO/DX-SR9T which describes in detail how to upgrade the transceiver to include up to three INRAD/COLLINS Mechanical Filters. Note that if one has NO plans to ever upgrade to INRAD/COLLINS Filters then there is little incentive to upgrade to the DX-SR9 over the less expensive DX-SR8 as the so-called "SDR Capability" of the DX-SR9(T) is virtually useless. Note that the DX-SR8(T) does NOT have the option to add INRAD/Collins Filters. While relatively expensive and requiring advanced soldering skills--the Mechanical Filter Upgrade greatly improves 455 kc IF filtering.

DX-SR 8 & 9 (T) transmitter SSB output is a generous 100++ watts. AM output is a generous 40++ watts. This provides ample (but not excessive) drive for a number of lower gain tube amplifiers (1 X 3CX1200, 2 X 3-500Z & 4 X 572B, etc.). Most (100 watt) transceivers are only rated 25 watts on AM--so the DX-SR 8 & 9 (T) transceivers are (power-wise) very desirable for AM. Transmit Audio reports on both AM and SSB are excellent--especially with the compatible Kenwood MC-60A "power-mike".

The "flywheel effect" of the DX-SR8 & 9 (T) transceiver's (press-on) weighted tuning knob is OK as is -but can be further improved by substituting a "stock" TEN-TEC ORION or OMNI 7 solid "pot-metal" Tuning Knob with set-screw.

The Subject ALINCO transceiver has no continuously adjustable RF Gain Control which is a little bit aggravating--especially when trying to minimize atmospheric noise. The good news is that you have to attenuate the INCOMING SIGNAL in steps which forces protection of the first IMixer & IF against overload.
KG4RUL Rating: 3/5 Sep 21, 2013 06:39 Send this review to a friend
Lacks ANY Digital Mode Support  Time owned: 0 to 3 months
I currently own a DXSR8T. Looking at the DX-SR9, SDR software ONLY, I find the lack of ANY digital mode support to be a reason to not upgrade my radio. If I still have to break out the SignaLink USB and microphone cable to do digital modes, the extra cost is NOT justified. Maybe another look if the software is improved?
VE3KXX Rating: 3/5 Sep 20, 2013 19:32 Send this review to a friend
No nonsense entry level HF radio with SDR capabilities.  Time owned: 0 to 3 months

Radio is solidly built and comes with decent manual plus schematics. Solid 100+ watts out. Have gotten decent reports on SSB thus far. Controls are simple to understand. Nice big and bright easy to understand LCD display. Comes with IQ interface for SDR operation with freeware software which was fairly easy to set up. Note that SDR operation requires optional USB / Serial to rig cable to control rig which isn't included.


Tinny audio on SSB even with external speaker. No computer control outside the SDR software at present. CAT type control would have been a nice addition to this new radio. No standardized "DATA" connection on radio. Difficulty getting SDR operation to work through 3rd party radio interface - had to use computer input / output to get it to work properly.


This radio is a fine entry level radio which allows the user to expand beyond the basic transceiver with SDR features through the IQ interface. Not completely convinced that the additional price over the DX-SR8T is worth the price except to a user who plans to run the SDR software exclusively. Most features mirror the DX-SR8T. Completely satisfied with the radio as a backup to my main station radio. Would recommend to an entry-level ham on a budget.

Alinco continues with its no-nonsense approach to rig design and features.

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