[amsat-bb] Preamp source

[Jim White]

Turns out HRO has some SSB units in stock including the SP-200 I 
wanted.  So I've ordered one there.

I hope HRO continues to stock the SSB units.

The Minikets a couple folks suggested looks like a great option as well, 
especially if I was going to expand the EME array and put a preamp at 
the feed of each antenna.

Thanks for all the suggestions.

Jim

On 11/7/2019 2:26 PM, Kevin wrote:
> FWIW Jim,
>   SSB directly from Germany has worked well for me, typically cheaper 
> than getting it here in the US and their shipping is quick.
> I have a bunch of SSB preamps and they have all worked well and seem 
> to hold up well also.
>
> Only negative I can say about them is they like to use a pair of back 
> to back diodes across the input, great for front end protection but 
> when exposed to high levels of RF  like say from a HF rig they can 
> rectify the signal creating wideband noise.
>
> 73
> Kevin
>
>
> On 11/7/2019 13:02, Jim White via AMSAT-BB wrote:
>> My 22 year old Landwehr VHF preamp finally gave it up.
>>
>> I'd appreciate leads on high quality mast mounted preamps for VHF.  
>> AR2 doesn't answer their phone and some uni's I work with say it 
>> takes days to get a call back then AR2 didn't have the one they 
>> wanted and said they would not be making any more.  And SSB USA's 
>> recording says they are only available sporadically. Looks like I can 
>> order direct from SSB in Germany so that's an option.
>>
>> Are there any low noise RF switched manufacturers/vendors in the U.S. 
>> these days? Where are folks getting preamps these days?
>>
>> Jim
>>
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>