[hpsdr] MUNIN low output

[Tim ORourke]

Check output without LPF to verify you are selecting correct filter in Alex
Tim


-----Original Message-----
>From: Kjell Karlsen <la2ni at online.no>
>Sent: Oct 4, 2013 3:51 AM
>To: hpsdr at lists.openhpsdr.org
>Subject: Re: [hpsdr] MUNIN low output
>
>***** High Performance Software Defined Radio Discussion List *****
>
>Hi Don
>
>Just a stupid question: Do you use the Gain By Band in PSDR to set the  
>output from Hermes to drive Munin?
>
>On all the units I have built, I can get >100W linear power out on all  
>bands except on 6 meter were it may go down to 80-90W.
>
>The gain in Munin is falling on the higher frequencies so the Gain By Band  
>settings may be from 55 dB on the lower bands to 46 dB on 10 meter and 42  
>on 6 meter.
>
>Be sure that the DRIVE is at 100% all the time when you test!
>
>73, Kjell
>
>
>
>
>
>
>På Fri, 04 Oct 2013 00:09:28 +0200, skrev dlwaddel at netzero.net  
><dlwaddel at netzero.net>:
>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> I know I've seen several comments about low output from MUNIN, but can't  
>> find them. So...
>>
>> Does anyone have some pointers of what to look for? My MUNIN has full  
>> 100 watts on bands below 15 meters. On 15 the output drops to 85 watts,  
>> on 10 meters it drops to 25 watts, and on 6 meters the output is a  
>> measly 15 watts.
>>
>> I am driving it with Hermes and use a 13.8 volt power supply. I have the  
>> MUNIN piped into ALEX and the output into a dummy load. MUNIN was built  
>> following the guidelines on K9IVB's web site, including construction of  
>> all inductors and transformers.
>>
>> Thanks,
>> Don
>> K3DLW
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>
>
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Tim O'Rourke 
W4YN at ARRL.Net
Low Power Amateur Radio Rocks 
Member of Flying Pigs,ARCI,GQRP,RSGB,ARRL Life Member
NHRA Life Member

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