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On Wed, 03 Nov 2004 16:59:25 -0800, Larry Gagnon
wrote: I recently purchased a slightly used Heil Goldline GM-5 microphone, attempting to use it with an ICOM 735 transceiver. I have read Heil's web page about the Icom 735 -15dB down on its internal microphone preamplifier compared to many other radios. I can only get the GM-5 to drive my IC-735 effectively if the MIC GAIN is 100% open and the COMP LEVEL is up as HIGH as possible. I am getting very good audio reports compared to the default ICOM HM-12 handheld microphone, but the Heil GM-5 is not driving the rig very hard and power output is quite reduced compared to the HM-12 mic. Has anyone out there had a similar experience and if so any suggestions on what I might do to improve the driving ability of either the rig or the Heil GM-5? Larry Gagnon VE7EA The Heil "iCM" electret mike is the model they make for pre-PRO Icoms. It has the extra output the older rigs require. You may want to email the Heil people about using the Goldline with the 735; they may have suggestions. bob k5qwg |
On Wed, 03 Nov 2004 16:59:25 -0800, Larry Gagnon
wrote: I recently purchased a slightly used Heil Goldline GM-5 microphone, attempting to use it with an ICOM 735 transceiver. I have read Heil's web page about the Icom 735 -15dB down on its internal microphone preamplifier compared to many other radios. I can only get the GM-5 to drive my IC-735 effectively if the MIC GAIN is 100% open and the COMP LEVEL is up as HIGH as possible. I am getting very good audio reports compared to the default ICOM HM-12 handheld microphone, but the Heil GM-5 is not driving the rig very hard and power output is quite reduced compared to the HM-12 mic. Has anyone out there had a similar experience and if so any suggestions on what I might do to improve the driving ability of either the rig or the Heil GM-5? Larry Gagnon VE7EA The Heil "iCM" electret mike is the model they make for pre-PRO Icoms. It has the extra output the older rigs require. You may want to email the Heil people about using the Goldline with the 735; they may have suggestions. bob k5qwg |
On Wed, 03 Nov 2004 16:59:25 -0800, Larry Gagnon
wrote: I recently purchased a slightly used Heil Goldline GM-5 microphone, attempting to use it with an ICOM 735 transceiver. I have read Heil's web page about the Icom 735 -15dB down on its internal microphone preamplifier compared to many other radios. I can only get the GM-5 to drive my IC-735 effectively if the MIC GAIN is 100% open and the COMP LEVEL is up as HIGH as possible. I am getting very good audio reports compared to the default ICOM HM-12 handheld microphone, but the Heil GM-5 is not driving the rig very hard and power output is quite reduced compared to the HM-12 mic. Has anyone out there had a similar experience and if so any suggestions on what I might do to improve the driving ability of either the rig or the Heil GM-5? Larry Gagnon VE7EA The Heil "iCM" electret mike is the model they make for pre-PRO Icoms. It has the extra output the older rigs require. You may want to email the Heil people about using the Goldline with the 735; they may have suggestions. bob k5qwg |
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