[amsat-bb] Possible trouble with new Icom IC-910H

Andrew Rich vk4tec at internode.on.net
Fri Aug 11 13:14:07 UTC 2017

I talked my test equipment mate

You would have to whistle fairly loudly to get a swing on the bird


Sent from my iPhone

> On 11 Aug 2017, at 10:28 pm, Peter Pauly <ppauly at gmail.com> wrote:
> I do have a little USB SDR. I plan hook that up tonight to see if I can see an indication of signal. I don't want to furiously try to contact someone via satellite and find out I'm not putting out any power. 
> I've never owned this rig until a couple days ago so there's always a possibility I'm doing something wrong. 
>> On Fri, Aug 11, 2017 at 8:23 AM, Andrew Rich <vk4tec at internode.on.net> wrote:
>> Peter are you speaking loudly
>> The energy in an fm envelope is way larger than a side band transmission
>> The fact that your reaching an alc level seems to indicate the radio is doing its job
>> Pity u don't have USB rx
>> Do you have a software defined radios ?
>> Andrew
>> Sent from my iPhone
>> > On 11 Aug 2017, at 10:02 pm, Peter Pauly <ppauly at gmail.com> wrote:
>> >
>> > I bought a used IC-910H on ebay for satellite work an am having a possible
>> > issue with it.
>> >
>> > I tested the 2m and 70cm transmitter and receiver in FM mode with my
>> > handheld and they work fine. I hooked up a Bird 43 wattmeter with a 50E
>> > slug (50W, 400-1000Mhz) and when I transmit on 440Mhz FM I get an
>> > indication of power output on the meter.  So far so good...
>> >
>> > Then in USB/LSB mode however, I get no indication on the meter, despite
>> > turning the mic gain up and talking into the mic. I've also up'ed the RF
>> > power with the little knob and that doesn't help. The red light flashes on
>> > the rig (ALC indication) and the meter on the rig moves. I can also hear
>> > distorted audio on my FM handheld (as expected since it's FM and not USB)
>> > but I'm worried about the lack of power indicated on the Bird.  I haven't
>> > been able to try CW yet because I don't have the right sized plug. Should I
>> > be concerned about the lack of power?
>> >
>> > Summary:  Bird wattmeter shows power out on FM, but not on USB/LSB.
>> >
>> > Thanks
>> >
>> > Peter
>> > W9KG
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