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[aprssig] HT-220 HT's for APRS

Brian B. Riley brianbr at mac.com
Fri Jul 20 03:39:27 UTC 2007


I had a Midland 13-509 (220 MHz) that was the backbone link on a very  
busy packet node literally wear the arms off the relay the amazing  
thing was that was even working for the last week before it finally  
failed.


---
cheers ... 73 de brian  riley,  n1bq , underhill center, vermont
   <http://web.mac.com/brianbr/>  Tech Blog
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On Jul 19, 2007, at 10:35 PM, Doug Younker wrote:

>
>
> Stephen H. Smith wrote:
>
>>>
>> Why would it matter if the unit uses mechanical relays or  
>> electronic switching for PTT?
>
>
> As long as the switching time is manageable, I don't think it makes  
> a difference.  Azdens must have been a good buy when the old boys  
> who pioneered packet radio in this part of Kansas built their  
> network, because several where put into packet service 19-20 or so  
> years ago. They use T/R relays and at least one in now in APRS  
> service, relay still clicking it's little ole' heart out. At a more  
> relaxed pace now, since it no longer passes PBBS traffic. :)
> Doug, N0LKK
>
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