INRAD Desk Microphone System

INRAD, a division of Vibroplex®, enters our 37th year of offering quality accessories for the active Amateur Radio enthusiast. 

The INRAD microphones and the DMS-1 PTT locking base have received an enthusiastic review in the January 2018 issue of QST magazine.  Read the complete review here.  The review summary: "An excellent audio signal from a reasonably-priced, high-quality microphone." 

The new INRAD Desk Microphone System incorporates 1 of the 5 INRAD M-series microphone models plus our model DMS-1 heavy PTT desk stand and a detachable coiled cable that runs from the back of the base into the microphone jack on your radio.  These are sold as a complete package from $144.95 to $164.95 retail.

Plug the detachable coiled cable into the mic jack on your transceiver, and you're ready to operate.  To use the microphone with a different transceiver brand, plug in a different accessory cable.  Easy!

The base is metal and weighs 2.5 pounds to keep it from sliding around or being knocked over easily on the desk.  Total weight of base and desk microphone, over 4 pounds!  Metal microphone body, standard 5/8 x 27 thread metal standpipe, rubberized microphone clip.  The circular rubber ring around the circumference of the metal standpipe for the mic clip is an internal shock mount for noise isolation.

Large push-to-talk switch on the base front.  To lock the PTT for those longer QSO's, slide the silver slider switch to the left while the PTT switch is down.  To release, slide back to the right. 

On the back of the base, the 1/8" connector connects to the microphone body.  The 4 pin XLR connector is used for the detachable coiled DM-series cable that connects to your transceiver mic jack. 

Own multiple transceiver models with different mic jack configurations?  It's as easy as unplugging the cable from the rear of the base and connecting the next cable.

Want a different on-air sound from a different INRAD microphone?  The M-series microphones on the base are also interchangeable.  To change from one mic to another, unplug the 3 pin XLR cable from the back of the mic and pull it off the clip.  Plug in the new mic, put it on the stand.  It's that simple.

Alternatively, the M-series microphones can be purchased alone and used with either a stand or boom of your own.  M-series microphones are supplied with a 3 pin XLR to 1/8" mono male jack that is used with M-series adapters to plug into the front of the transceiver.  We also have foot and hand switches available that plug into the microphone adapter. 

Already own an INRAD microphone?  The DMS-1 PTT stand can be purchased as a stand-alone item.  To order a microphone without a base, the DMS-1 base alone or other related microphone items click here to view the other portion of the INRAD microphone ordering page.  To order a complete INRAD desk microphone ready to plug into your HF rig, see the tabs at the bottom of this page.  

The current INRAD desk microphone line consists of 5 desk microphones, each with a dynamic element unique to the specific model.

We have created a document that explains the microphone frequency response for the 5 models, called INRAD Microphones And Transmission Of The Human Voice.  The document compares the 5 models to each other and includes response curves.  A summary is included at the end of the document. 

FlexRadio transceiver owners:  Click here to read our guide on cable selections for all models. 

Ordering information:  Each DMS-series desk microphone package includes the microphone corresponding to the number of the package.  Example, the DMS-629 includes the M629, the DMS-686 includes the M686, etc.

Headsets with boom microphones and communications grade headphones plus more accessories to be released in spring 2018 by INRAD.  Watch this space for more information.

About INRAD:  2018 is INRAD's 36th year of offering quality transceiver accessories for Amateur Radio.  We have designed and marketed many transceiver modification kits, aftermarket high end crystal filters featuring better performance than the OEM originals, Collins mechanical filter kits and related modifications and other items over the decades.  Today, we use our expertise to offer our new line of desk microphones and accessories for everyday Amateur Radio operation.