[TowerTalk] TH7-DX Balun

[Gary Schafer]

An AM transmitter has a PEP of 4 times its carrier power at 100% modulation.

Also the input power for SSB was 1kw average as seen by the plate 
current meter. PEP is some 5 times that.

Look at your average reading watt meter when on ssb operating without 
any processing. Your average power as read on the meter will be around 
20% or so of PEP.

73
Gary  K4FMX


k2qmf at juno.com wrote:
> That was plate power "input" in the old days.
> at 70 percent efficiency you had 700 Watts out not 3000!!!
> 
> 73,  Ted  K2QMF
> 
> 
> On Wed, 23 Feb 2005 10:36:00 -0500 Gary Schafer <garyschafer at comcast.net>
> writes:
> 
>>Just a note about power handling ability: I don't know what the BN-86 
>>
>>was actually rated at but for 1kw input power on AM that equated to 
>>a 
>>power output of around 3000 watts by today's standards. We can 
>>actually 
>>run less power now than in the old days.
>>
>>73
>>Gary  K4FMX
>>
>>ChetMoore wrote:
>>
>>>Byron
>>>
>>>The BN-86 has been around for 35+ years and was designed when we 
>>
>>could only 
>>
>>>run 1 KW.  Force
>>>12 makes a 3 (b-12) and a 5 KW balun.  Radio works I think makes a 
>>
>>3 and a 5 
>>
>>>K Balun.  If you are going
>>>to be running 1.5 kw, then you might want something beefier.  With 
>>
>>a trap 
>>
>>>antenna, you have the possibility
>>>of hi swr entering the mix if you get water and or insect nests 
>>
>>built into 
>>
>>>the traps.  The resulting hi swr
>>>frequently manifests itself by heating and destroying the balun
>>>
>>>W2GD once told me that a balun was just something else to GO WRONG 
>>
>>and says 
>>
>>>to make a
>>>coax choke balun and never have to deal with "balun" problems 
>>
>>ever.
>>
>>>chet N6ZO
>>>----- Original Message ----- 
>>>From: "Byron Tatum" <bjtatum at ev1.net>
>>>To: <TowerTalk at contesting.com>
>>>Sent: Wednesday, February 23, 2005 1:54 AM
>>>Subject: [TowerTalk] TH7-DX Balun
>>>
>>>
>>>
>>>
>>>>I have been away for a few days but noticed a few subject lines 
>>>
>>covering 
>>
>>>>the TH7-DX balun, the BN-86. I have a TH7-DX that will be going up 
>>>
>>in near 
>>
>>>>future, what is the best balun to use for it? I know that when I 
>>>
>>assemble 
>>
>>>>it I will use the updated assembly notes for better 10 meter 
>>>
>>performance, 
>>
>>>>but what about the BN-86 balun, is it the best one to use? Thanks, 
>>>
>>Byron.
>>
>>>>_______________________________________________
>>>>
>>>>See: http://www.mscomputer.com  for "Self Supporting Towers", 
>>>
>>"Wireless 
>>
>>>>Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 
>>>
>>with 
>>
>>>>any questions and ask for Sherman, W2FLA.
>>>>
>>>>_______________________________________________
>>>>TowerTalk mailing list
>>>>TowerTalk at contesting.com
>>>>http://lists.contesting.com/mailman/listinfo/towertalk
>>>>
>>>
>>>
>>>
>>>_______________________________________________
>>>
>>>See: http://www.mscomputer.com  for "Self Supporting Towers", 
>>
>>"Wireless Weather Stations", and lot's more.  Call Toll Free, 
>>1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>>
>>>_______________________________________________
>>>TowerTalk mailing list
>>>TowerTalk at contesting.com
>>>http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>>>
>>
>>
>>
>>_______________________________________________
>>
>>See: http://www.mscomputer.com  for "Self Supporting Towers", 
>>"Wireless Weather Stations", and lot's more.  Call Toll Free, 
>>1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>>
>>_______________________________________________
>>TowerTalk mailing list
>>TowerTalk at contesting.com
>>http://lists.contesting.com/mailman/listinfo/towertalk
>>
>>
> 
> 
>