[AMRadio] BC1-J Mod trans. is fine.

[KC4QLP at aol.com]

In a message dated 3/21/02 7:58:23 AM Eastern Standard Time, 
wwd at netheaven.com writes:

<< Whoa,
 
 The tx should not know the difference between your dummy load OR your
 antenna!! If it does then your antenna is not 50 ohms (or whatever). Best
 work on the antenna side of things- feedline, tuner, antenna(!). Use a
 small tx to get the antenna 100%; don't risk your big rig.
 
 Does the tx have a 'tune mode'? If not pop a heating unit or lightbulbs
 (wired in parallel) into HV primary to drop input voltage to ~1/2 normal.
 This will drop tx output to ~1/4 and allow 'leisurely' tuning. 
 
 Good luck,
 Bill    N2KQA
 
 >> works fine into a dummy but the
 >> modulator oscillates when into the antenna. I still need to clean up the
 >> transmitter side of things. But there's hope.
 >>
 >> Dan
  >>
also be sure the transmitter chassis is grounded...and that you have the 
chassis of your modulation transformer well grounded/connected to the chassis 
of the transmitter.I've seen in commerical installs where some dummy had left 
the transformer just sitting on the floor of the transmitter,not bolted 
down..and with every modulation peak there would be a small arc from the 
metal feet of the transformer to the grounded chassis of the transmitter.
I'm surprised it didnt whipe out the mod transformer in that case.

Bob Carter
 Operations/Engineering
 
 WGAI-NewsRadio 560 AM Stereo .., WCXL 104.1 Beach 104..., WQDK 99.3 
Q-Country..., WWOC 94.5 WaterCountry 94.5..., Ray Communications Radio 
Network               
               
 Mid-Atlantic Engineering Services--providing radio stations with engineering 
services in the middle eastern Atlantic area.
e-mail:MidAtlanticEngineeringService at yahoo.com
http://www.geocities.com/midatlanticengineeringservice
    Chief Engineer--WRCS-AM 970 Ahoskie NC 
                             WBXB-FM 100.1 Edenton NC
                               WURB-FM 97.7 Windsor NC

AM Stereo Radio list moderator-----
amstereoradio-subcribe at topica.com                                             
                      amstereo-subcribe at topica.com 
amstereoradio-subscribe at yahoogroups.com 
                                                                            
                  KC4QLP Amateur Radio  
                     www.kc4qlp.cjb.net

 voice contact-252-335-0856
 fax 1-209-254-8978
 _______________________________________________________ 

WARNING TO UNSOLICITED SPAMMERS !!! Pursuant to U.S. Code, title 47, Chapter 
5, Subchapter II,
"Any and all nonsolicited E-mail (SPAM) sent to this address is subject to a 
download and archival fee of 500 U.S."!! E-mailing denotes acceptance of 
these terms."
 
------------------------------------------------------------------------------

-------------------