HFU HF Underground

Loggings => North American Shortwave Pirate => Topic started by: Team OLAH on October 30, 2018, 2349 UTC

Title: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Team OLAH on October 30, 2018, 2349 UTC: Anyone hearing us tonight? We are testing a new xmitter....cheers OLAH
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 30, 2018, 2350 UTC: You need to move Frequencies because of the OTHR Interfering.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Team OLAH on October 30, 2018, 2351 UTC: Bugger...we only have on X Mit crystal for this old beast....We'll try again another night.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 30, 2018, 2353 UTC: Radio Ga-Ga used 6930 USB until the OTHR started then they switched to 6920 USB.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Team OLAH on October 30, 2018, 2354 UTC: Thanks...not hearing OTHR here - oh well. Well make sure all the gear is working then shut it down. New xmitter for this year and new audio gear. Good time to work the kinks out.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Andrew Yoder on October 30, 2018, 2355 UTC: If you're still on, I'm not hearing you. I've been listening to 6930 the past few min. No OTHR in that time
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 30, 2018, 2355 UTC: The OTHR keeps going on and off so maybe monitor http://radiodxing.ddns.net:8073/?f=6930.00amz10 (http://radiodxing.ddns.net:8073/?f=6930.00amz10) for an opening which is now.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Team OLAH on October 30, 2018, 2356 UTC: We're live now....low power though as the antenna is not 100%. Thanks!
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 30, 2018, 2357 UTC: Quote from: Andrew Yoder on October 30, 2018, 2355 UTC
If you're still on, I'm not hearing you. I've been listening to 6930 the past few min. No OTHR in that time

It's more Noticeable in the NE USA near PA, IN, MA.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 30, 2018, 2357 UTC: Quote from: Team OLAH on October 30, 2018, 2356 UTC
We're live now....low power though as the antenna is not 100%. Thanks!

OTHR is back on.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Team OLAH on October 30, 2018, 2358 UTC: Thanks! We'll play around here for a bit then call it a night. We regained access to our xmit site today but the old antennas were damaged - all new assembled and installed in three hours. Cheers and happy radio!
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 30, 2018, 2358 UTC: The OTHR is strongest in Indiana. http://38.86.67.206:8078/?f=6930.00amz8 (http://38.86.67.206:8078/?f=6930.00amz8)
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Team OLAH on October 31, 2018, 0000 UTC: We'll shut it down and call it a night...we have to hoist the antenna up another few feet and clean up the power connections. Thanks for your tips and see you later.....Buck
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: WA0093SWL on October 31, 2018, 0002 UTC: Quote from: Team OLAH on October 31, 2018, 0000 UTC
We'll shut it down and call it a night...we have to hoist the antenna up another few feet and clean up the power connections. Thanks for your tips and see you later.....Buck
The OTHR is doing 4 Min Cycles so it will be best to transmit from 0001-0004 then 0008-0012 and so on.
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Andrew Yoder on October 31, 2018, 0009 UTC: I've been hearing carriers on 6930. So far, I've heard about 3 or 4, about 5-10 seconds in length over about the past 5 min. They wouldn't be strong enough for me to hear audio, but I have the receiver in USB, so they're fairly easy to hear that way. Not sure if it's you or someone else
Title: Re: Radio OLAH testing on 6930 khz AM @ 2348 UT
Post by: Radio Station on October 31, 2018, 0020 UTC: Quote from: Team OLAH on October 30, 2018, 2351 UTC
Bugger...we only have on X Mit crystal for this old beast....We'll try again another night.

If you run a DDS VFO with a voltage amplifier on the output to increase the drive you can connect it to the crystal socket with a bypass capacitor. This will allow you to go to any frequency. I have mine set to about 30 volts PEP drive off the DDS. This works great on older vacuum tube transmitters or any crystal controled transmitter.