[Dstar] IC-91AD not transmitting while on the charger???!!!

[vk2vvv]

One further thing I stumbled across Susan, is this quote from the operators manual:-

Quote

 "The voltage of the external power supply must be within
10-16 V DC when using either CP-12L, CP-19R or OPC-

254L, otherwise, use the battery pack.

. Up to 5 W (approx.) of maximum output power is provided

with the external DC power operation, however, when the

supplied voltage exceeds 14 V, the built-in protection circuit

activates to reduce the transmit output power to 0.5 W (approx.)."



It would pay to see what the voltage across the charging terminals is during charging.

Cheers again

Ross

VK2VVV





----- Original Message ----- 
From: "vk2vvv" <VK2VVV at digidata.com.au>
To: "Dstar Digital Radio Mail List" <dstar at lists.wia.org.au>
Sent: Friday, August 29, 2008 9:12 PM
Subject: Re: [Dstar] IC-91AD not transmitting while on the charger???!!!


> Hi Susan,
> 
> My assumption was  that the charging circuit is disabling the battery from 
> the radio during the charging cycle.  Hence low current available from the 
> plug pack during the TX operation.  But on checking the specifications 
> stated by Icom
> Quote
> "An external DC power jack allows for the operation with an external DC 
> power supply."  ---  "When used with the CP-19R or OPC-254L, simultaneous 
> operation during charging is possible."
> So my assumption is probabily incorrect.   I can't put my hands on a 
> schematic right now, and I run an 2820H and ID-1, so I am not an expert on 
> 91AD's.
> 
> I suppose these type of unfounded reply aren't really constructive, but 
> .......
> 
> If you don't have an answer by tomorrow, I'll drop by a friend with an 91AD 
> and see if the same thing happens with them.
> 
> 
> 
> 
> Cheers
> Ross
> VK2VVV
> 
> 
> 
> ----- Original Message ----- 
> From: "Susan Mackay" <susanmackay at optusnet.com.au>
> To: <dstar at lists.wia.org.au>
> Sent: Friday, August 29, 2008 8:23 PM
> Subject: [Dstar] IC-91AD not transmitting while on the charger???!!!
> 
> 
>>I have a 91AD (and very happy with it) but I'm not sure if what I am 
>>experiencing is normal or a fault in my unit.
>>
>> I can trigger the local repeater on both high and low power from my  home. 
>> However, when I plug in the battery charger (the standard one  supplied 
>> with the unit by Icom) the transmitted power seems to drop to  almost 
>> nothing.
>>
>> Using a (admittedly somewhat unproven) field strength meter, without  the 
>> battery charger I get a significant (about half scale) deflection  on high 
>> power and a slight but noticeable deflection on low power.  With the 
>> battery charger in I get a minor deflection on high power and  nothing on 
>> low power.
>>
>> This is not scientific I know, but is this a 'known' situation with  the 
>> 91ADs, or a known failure mode or am I just unlucky?
>>
>> Thanks for any information
>>
>> Susan VK3ANZ
>> _______________________________________________
>> Dstar mailing list
>> Dstar at lists.wia.org.au
>> http://lists.wia.org.au/mailman/listinfo/dstar
>>
>>
>> -- 
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>> 
>
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