[NJARC] Broadcast Transmitter

[STEVE ROSENFELD]

Hi joe,

	Am transmitter has full carrier power on the air with no modulation.
Would not advise powering up without a dummy load & someone with a general 
Class radiotelephone license to actually turn on the transmitter.

				steve

-----Original Message-----
From: njarc-bounces at mailman.qth.net [mailto:njarc-bounces at mailman.qth.net]
On Behalf Of n3ibx
Sent: Thursday, November 02, 2006 9:22 AM
To: New Jersey Antique Radio Club
Subject: Re: [NJARC] Broadcast Transmitter

Visit our web site - See http://www.njarc.org
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Ray,
      It would most likely be an easy proposition to move the transmitter to

160M. All that would most likely be involved is changing the oscillator 
frequency, inserting the proper crystal, and then tuning the final amplifier

to resonante on it's new frequency.

One option may be to let the transmitter run on it's oscillator frequency 
(whatever that may happen to be) and try to low level modulate it. The 
oscillator output may be within FCC specs for low power AM transmitters to 
broadcast whatever our club should decide to put out over the air. This may 
be the most "viable" option.

Other than the 828's, I have spare tubes for it should it need something.

If you like, we can discuss this at the next meeting.

Best Regards,
                    Joe Cro N3IBX

----- Original Message ----- 
From: "Ray Chase" <enrpnr at erols.com>
To: "NJARC" <njarc at mailman.qth.net>
Sent: Thursday, November 02, 2006 9:10 AM
Subject: [NJARC] Broadcast Transmitter


Visit our web site - See http://www.njarc.org
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JR & others.  John after manhandling that unit you cannot believe that it 
would sag in the middle while supported on the ends?  Remember it was 
supported that way during the trip on Sal's trailer, if it was going to sag 
it would have happened then while bouncing around.
Yes I said it weighed 1200 pounds but careful what you hear from old men 
with poor memory, when I got home I rechecked the manual and it says 1360 
pounds.  I talked Tom out of the manual on my prior visit and will copy it 
for preservation.  Wonder what you guys would pay for a copy, hmm??
Yes it only runs on 115 volts power input.
Other specs:
RF power out (20 to 250 ohms balanced load) 250 watts
540 to 1600 Kc
Input power consumption: 1625 watts normal program level, 1825 watts @ 100% 
modulation
Frequency stability +/- 10 cycles
Tube complement:Osc. 807; buffer, 828; final, pair 810's; audio, pair 6J7; 
mod., pair 828; rect., pair 8008 and a 5Y3
Yah we should eventually fire it up for display purposes into a dummy load, 
maybe let enough leak out so we stay within low power unlicensed limits. 
I'd hate to modify it for 160 meters but will yield to what the majority 
decides.
73's,  Ray
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