---+ BRIEF:

Does anyone have experience using  what is called a "ground crew headset",

+ such as the David Clark H3310 Headset - 366$

+ or the David Clark H9910 Wireless Headset (9900 Series) - 614$

https://www.aerospecialties.com/aviation-ground-support-equipment-gse-products/aircraft-headsets-intercom-systems/aircraft-headsets/aircraft-pushback-headsets/david-clark-h3310-headset/

https://www.aerospecialties.com/aviation-ground-support-equipment-gse-products/aircraft-headsets-intercom-systems/aircraft-headsets/aircraft-deicing-headsets/david-clark-h9910-wireless-headset-9900-series/

Consisting of

0.  over-ear earphones, padded, etc.

1. a  noise shielded microphone (muff) that covers the mouth

overall looking very much like a Stenomask combined with earphones

I believe these products need to be used with  something worn on the belt -  but poking around the system diagrams seem to show multiple boxes.

---+  BACKGROUND -  why I ask?

I just came back from my 4th trip since last June -  and COVID willing  maybe looking at more.

I am quite frustrated  that I cannot use speech recognition when traveling  by plane.  Historically I have done some of my best work flying across the continent.   mostly noise  interfering with speech recognition, whether  through my Sennheiser headset to my PC.  But also security/privacy,  and desire to avoid  disturbing my fellow passengers.

Similarly,  I have frequently worked in airport restaurants and frequent flyer refuges  while on long layovers.   Noise less of a concern, but again security/privacy and avoid disturbing people nearby.

I came home resolved to investigate a Stenomask for dictation using Dragon  while traveling, e.g. on plane. Googling found the Wikipedia article https://en.wikipedia.org/wiki/Stenomask, which said "Microphones that work much like a stenomask are used by aircraft ground crews to communicate with cockpit crews in airport environments with extreme engine noise, and are usually part of their headsets."    Further googling "ground crew headsets" found David Clark being  most prominent.

I know that Lunis recommends against Stenomask -  inaccurate, uncomfortable,  requiring breathing control. Nevertheless, no harm asking.

DPG15.6 (also DPI 15.3) + KB, Sennheiser MB Pro 1 UC ML, BTD 800 dongle, Windows 10 Pro, MS Surface Book 3, Intel Core i7-1065G7 CPU @ 1.3/1.5GHz (4 cores, 8 logical, GPU=NVIDIA Quadro RTX 3000 with Max-Q Design.