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

[Andrew Rich]

Average power meter vs peak power meter 

Sent from my iPhone

> On 12 Aug 2017, at 10:08 am, Peter Pauly <ppauly at gmail.com> wrote:
> 
> SDR Dongle says I'm getting out.  And if I whistle, I can deflect the Bird
> meter. Thanks everyone for your help. I was worrying for nothing.
> 
>> On Fri, Aug 11, 2017 at 3:45 PM, Zach Metzinger <zmetzing at pobox.com> wrote:
>> 
>> On August 11, 2017 1:19:46 PM CDT, Floyd Rodgers <kc5qbc at swbell.net>
>> wrote:
>>> Try AM mode and the meter should register or get another meter that can
>>> measure ssb
>>> 
>>> 
>>> On Friday, August 11, 2017 8:15 AM, Andrew Rich
>>> <vk4tec at internode.on.net> wrote:
>>> 
>>> 
>>> I talked my test equipment mate
>>> 
>>> You would have to whistle fairly loudly to get a swing on the bird
>>> 
>>> Andrew
>>> 
>>> 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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>>> 
>>> 
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>> 
>> If your rig has a RTTY mode, switch to that and key down. You should get a
>> full power tone with no actual data modulating it.
>> 
>> 73,
>> 
>> --- Zach
>> N0ZGO
>> --- Zach
>> _______________________________________________
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
> are solely those of the author, and do not reflect the official views of AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb