CRM-220 information

Information from Charles Stileman a regular user.

A Connevans CRM 220 Neck Loop System which I wear on most occasions is an essential part of my every day existence.


Connevans Radio Loop Hearing System (CRM 220)

Comments outlining some of CRM 220's benefits prepared by a satisfied customer.

1. Hearing Aids should be switched to the 'T' position as with other Loop Systems. 'Behind the ear' aids are often easier to adjust than those 'in the ear'. National Health aids normally give good hearing with loop systems and at no cost.

2. In noisy situations the Transmitter can be worn round the speaker's neck (using the neck harness), or in the listener's breast pocket to hear the person next to one. If noise persists use procedure described in item 11.

3. With many people talking at once, a normal hearing aid will pick up all the background noise making it extremely difficult to hear. Speaking directly into Transmitter cuts out most of this noise.

4. At meals or when entertaining people are generally most co-operative in passing the Transmitter round the table for one to hold a one-to-one conversation, for instance across the table. One need not necessary then feel isolated or embarrassed by deafness. Instead one becomes the centre of attraction as people enter into the spirit of the game. I have a second transmitter which allows me to switch conveniently from one conversation to another at different ends of the table.

5. When entertaining it is possible to keep in touch with the conversation from the next room or another part of a building (often to one’s guests' surprise!) by leaving the Transmitter on the table.

6. In a quiet room the Transmitter can give improved hearing when positioned at a distance from speakers.

7. At lectures or meetings, by placing Transmitter on rostrum, or getting speaker to wear discreetly round neck (with neck harness ref.224262), one can hear what is being said from the back of a hall.

8. Television or radio. A Transmitter placed close to the loud speaker provides good listening, fulfilling the same function as a home loop system. Programmes can also then be heard from other parts of the house.

9. A combination of loop setting in one hearing aid and normal setting in the other can sometimes make speech clearer.

10. Volume from the Transmitter can be adjusted only by altering the setting of the 'TX' control on the Receiver using the small black screwdriver (twiddling stick) supplied.

11. To reduce Background Noise further: reduce volume on the Receiver by turning TX screw anticlockwise as required. Transmitter then needs to be held closer to speaker to allow for reduced volume.

12. Further volume increase can be achieved by lifting Neck Loop close to hearing aid (in addition to adjusting the hearing aid).

13. The Environmental Microphone, if plugged into the Receiver, will allow nearby speech or sounds to be heard (as well as sounds from the Transmitter). The Environmental Microphone can also be used on its own for nearby speech as an alterative to a Transmitter. The volume on the TX control may need to be set to one’s requirements beforehand as described in item 10 above.

Accessories
For me the easiest way to carry the Receiver is attached to the waist harness (ref. 224261) worn round the waist. I find that all items can be conveniently carried in the 'bum' bag (ref. 2247) worn round the waist. Besides the Receiver, Transmitter and Neck Loop carried in the front pocket; the following items can be carried in the back pocket:

  • 2 spare batteries (charged)
  • satellite stub microphone
  • spare aerial (important since if lost the system does not work!)
  • neck harness (ref. 224262)
  • twiddle stick
  • spare hearing aid batteries

    Charles Stileman Nov 2006


    Connevans CRM 220 Radio Loop Hearing System

    Notes on Setting up Procedure
    (refer to Connevans Handbook 2004)

  • Fit Batteries into both Transmitter and Receiver (rechargeable batteries need charging before use (p33)
  • Battery charging (p34-35)
  • Fit Aerial into base of Transmitter (illustration on p26)
  • Plug the Patch Cord into socket on the Neck Loop
  • Plug Neck Loop assembly into side of Receiver (small 2-pin prong 'output socket' shown on p28, and see P30-31)
  • Having placed Neck Loop over ones neck, turn on both Transmitter and Receiver (2 positions), and switch hearing aids to 'T' position
  • Adjust volume and tone controls on Receiver using Swivel Stick (screw driver ) provided - clockwise to increase volume, anticlockwise to reduce volume and if necessary thereby reduce background noise (p28-29)
  • Tone control adjustment (p29)
  • The Receiver can be worn round the waist using the Waist Harness.
  • The Transmitter when attached to the Neck Harness can if required be worn round the neck of the speaker (p22).
  • The small Satellite Environmental Microphone can be plugged into side of the Receiver to allow nearby sounds or speech to be heard in addition to Transmitter (p28-29,31).
  • Listening Stick Test Kit can be used by an outsider without hearing aid to check that the system is working (p36)

    Charles Stileman Nov 2006


    Connevans CRM 220 Radio Loop Hearing System

    Items Supplied (2006 Catalogue pages 25-393)

    Main Items:

  • Transmitter 2250 (p25)
  • Aerial 220502. This is for a pack of 2 (recommended in case one gets lost or damaged) (p33)
  • Receiver 2251 (p25)
  • Environmental stub head microphone FMG211 (p26)
  • Multiturn Neck Loop FMG441 (+ Patch Cord 293 for connecting to Receiver) (p28)
  • 4 Rechargeable Batteries 2267NMH (p27)
  • Battery Charger 22684 (for 4 batteries) (p27)

    Items from the Connevans catalogue which I personally find useful

  • Waist harness (for wearing Receiver) 224261 (p31)
  • Neck Harness (for wearing Transmitter) 224262 (p31)
  • 'Bum Bag' 2247 (p32). I wear this for carrying all the equipment, including spare batteries (including for hearing aid) and spare aerial etc stored in the rear pocket.
  • I found the Carrying Case 224255 (p30) unnecessary although some people may prefer it.
  • Spare aerial 220502 (p33 as above). This is essential since the system will not function without one
  • Conference Microphone 2237 (p26). Optional extra which should be plugged into the Transmitter. It can be effective at meetings being non-directional. However the environmental microphone FMG211 when plugged into the transmitter ca have a similar effect.
  • Listening Stick Test Kit 22874 (p33). This is used to check that the system is working in the absence of a hearing aid.

    Charles Stileman Nov.2006

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