Self-Grounding Microphones Hm-148G/Hm-148T - Icom IC-F9511T User Manual

The HM-148G and HM-148T, Heavy duty self- Th HM 148G d HM 148T H
grounding microphones are designed to do without
connecting wires to the vehicle's ground. The self-
grounding is enabled by a newly designed
microphone hanger.
HM-148G
(Plain type)
Features
1. Self-Grounding
"Hanger Action" functions can be used without
connecting the microphone hanger to the
vehicle's ground, which makes the installation
work easier.
OLD
When the HM-148G/T is put on the new self-
grounding hanger, the microphone's metal parts,
having no conduction between them in normal
condition, short-circuits. Thus, no ground wiring is
required. The radio detects it also as Hanger required The radio detects it also as "Hanger
Action".
2. "Hot DTMF" for HM-148T
The DTMF code will be sent out when pressing a
key without a PTT operation.
*This function can be de-activated too.
Hanger Action (On Hook / Off Hook) Hanger Action (On Hook / Off Hook)
There are two "Hanger Action" functions
available. It can be pre-set ON or OFF in the
cloning software.
1. Off Hook Monitor function
When you pick up the microphone out of the
hanger, the radio automatically turns to the
monitor mode. monitor mode.
2. On Hook Scan function
When you put the microphone on the hanger and
the radio automatically starts scanning.（The
radio continues to be on the scan mode except
when you talk on the radio.）
3-6 Self-grounding Microphones
HM-148G / HM-148T
d t lf
HM-148T
(DTMF type)
Availability of Hanger Actions Availability of Hanger Actions
The available On-hook/Off-hook hanger actions
are shown below. ( : Available N/A : Not
available)
Hanger Type Image
Self grounding
supplied with
the HM-148G/T
Non-self
grounding
supplied with
the transceiver
* Self-ground
▒ NOTE
• HM-148G #18 EXP / HM-148 #19 EXP includes a
self-grounding mic hanger. (The former versions do
not include the mic hanger, so it's necessary to
order it separately.) order it separately )
• When you use other microphones than HM-148G
/HM-148T with the new microphone hanger,
the hanger must be connected to the vehicle's
ground for using hanger action functions.
• When you use the HM-148G/HM-148T
with an old, regular type microphone hanger,
ground wiring is still required.
HM-148
GND HM-148
HM-152
connection G/T
HM-152T
C Connected
Not
*
N/A
Connected
Connected
Not
N/A / N/A /
Connected Connected
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