Just put a new set of tubes in the nighttime transmitter and used video to record transmitter readings. Trying to get with modern times, in an old way. Night rig is Bauer 702B, day rig is Collins 21E.
Great equipment. It ... By: N4LNE. on 01 Dec 08, 03:28:44 Great equipment. It would have been nice to hear the audio through out the clip. And getting the video in focus would have been great. I can hear Chubby Checker now.!
Phil N4LNE
Paul,
That takes me ... By: DG19075. on 14 Sep 08, 00:15:43 Paul,
That takes me back to 1979 when I was staff engineer at 1260 Boston, then WEZE. We also had a Collins 21E as one of the aux rigs.Main was an AEL AM-10KD, running at 5 kW. Used to love hearing the WHACK! from the contactors when the 21E would go on the air. The Western Electric phasor, built with plumbing pipe, had a common point Z of 65 ohms at night. I'd sometimes run out of loading coil trying to make 5.4 kW at the common point at night.
The first ... By: tvnetdude. on 26 Aug 08, 22:45:20 The first transmitter I ever worked on was a Bauer 707 that was built from a kit. The invoice was in the manual and it was for a little over $1600 new.
The Collins was ... By: paulshinn. on 16 Jul 08, 22:23:22 The Collins was installed new in 1955. I am told it is the oldest daily-use main transmitter in the country.
How old are those ... By: douro20. on 09 Jun 08, 02:49:14 How old are those transmitters?
The small ... By: paulshinn. on 10 May 08, 22:49:32 The small transmitter is a Bauer 702B. The large transmitter is actually 3 cabinets in all. It is a Collins model 21E running 5KW. Don't care about the RF ammeter in the driver cabinet you are referring to, the grid meter in the PA cabinet works and reads the current coming out of the driver cabinet just fine.
As for the 4 amp commenter- That is 4 RF amps. Into 50 ohms, that is 1 KW. The tubes are Amperex.
BossSound- Those are 4-125's in the driver cabinet of the Collins.
OMG-- Was that one ... By: ConservativeVic. on 10 May 08, 22:22:01 OMG-- Was that one of the Sparta TX that was a knock off of the Bauer 707? I didn't recognize the second TX. It sort of looks like an RCA, but I don't recall them using 4-400s. (But it does need a new thermocouple-- 0 RF current!)
Vic, formerly with Orban
hey 4 amperes in ... By: guimbadriver. on 26 Apr 08, 16:57:38 hey 4 amperes in full? each tube drain 1 ampere? hey the tubes in this transmitter are phillips
Yes, it is a ... By: paulshinn. on 08 Apr 08, 07:46:04 Yes, it is a Collins 21E. It runs 5KW.
Collins 20V3 Pair ... By: THEBossSound. on 07 Apr 08, 20:22:09 Collins 20V3 Pair of 4-400s on either side. Glass in the middle. 1kW.
Very nice! That ... By: Organgrinder010. on 08 Feb 08, 19:06:14 Very nice! That Collins is a 5kW transmitter, no?
This is Talitha (Tali for short). She just LOVES praising the Lord! She does this all the time, but especially if she is in trouble. Wife sings 'Praise Him' and Tali does it. Enjoy!
I am VERY sorry for the horrible quality. Was recorded on a cellphone. I will try and get a good quality video of Tali soon.
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Latest comments made on this video:
By: N4LNE. on 01 Dec 08, 03:28:44
Great equipment. It would have been nice to hear the audio through out the clip. And getting the video in focus would have been great. I can hear Chubby Checker now.! Phil N4LNE
By: DG19075. on 14 Sep 08, 00:15:43
Paul, That takes me back to 1979 when I was staff engineer at 1260 Boston, then WEZE. We also had a Collins 21E as one of the aux rigs.Main was an AEL AM-10KD, running at 5 kW. Used to love hearing the WHACK! from the contactors when the 21E would go on the air. The Western Electric phasor, built with plumbing pipe, had a common point Z of 65 ohms at night. I'd sometimes run out of loading coil trying to make 5.4 kW at the common point at night.
By: tvnetdude. on 26 Aug 08, 22:45:20
The first transmitter I ever worked on was a Bauer 707 that was built from a kit. The invoice was in the manual and it was for a little over $1600 new.
By: paulshinn. on 16 Jul 08, 22:23:22
The Collins was installed new in 1955. I am told it is the oldest daily-use main transmitter in the country.
By: douro20. on 09 Jun 08, 02:49:14
How old are those transmitters?
By: paulshinn. on 10 May 08, 22:49:32
The small transmitter is a Bauer 702B. The large transmitter is actually 3 cabinets in all. It is a Collins model 21E running 5KW. Don't care about the RF ammeter in the driver cabinet you are referring to, the grid meter in the PA cabinet works and reads the current coming out of the driver cabinet just fine. As for the 4 amp commenter- That is 4 RF amps. Into 50 ohms, that is 1 KW. The tubes are Amperex. BossSound- Those are 4-125's in the driver cabinet of the Collins.
By: ConservativeVic. on 10 May 08, 22:22:01
OMG-- Was that one of the Sparta TX that was a knock off of the Bauer 707? I didn't recognize the second TX. It sort of looks like an RCA, but I don't recall them using 4-400s. (But it does need a new thermocouple-- 0 RF current!) Vic, formerly with Orban
By: guimbadriver. on 26 Apr 08, 16:57:38
hey 4 amperes in full? each tube drain 1 ampere? hey the tubes in this transmitter are phillips
By: paulshinn. on 08 Apr 08, 07:46:04
Yes, it is a Collins 21E. It runs 5KW.
By: THEBossSound. on 07 Apr 08, 20:22:09
Collins 20V3 Pair of 4-400s on either side. Glass in the middle. 1kW.
By: Organgrinder010. on 08 Feb 08, 19:06:14
Very nice! That Collins is a 5kW transmitter, no?