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#1
July 3rd 04, 04:02 PM
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Hallicrafters SR-400 Cyclon III
What is a reasonable price for a good working one?
Is this a good set? Can it be compared to Drake C-line or Collins KWM-2? Thanks Mauro |
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#2
July 4th 04, 01:06 AM
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Mauro wrote:
What is a reasonable price for a good working one? Is this a good set? Can it be compared to Drake C-line or Collins KWM-2? Thanks Mauro Hi, Mauro I have a Hallicrafters SR-2000 "Hurricane" transceiver, which is the (slightly) big brother of the SR-400. I also have a KWM-2. The Hallicrafters is easier to repair, since the Collins used Vector sockets, to squeeze in components vertically as well as horizontally. The KWM-2 is a bit more stable, I think due to the use of varicap in the dial readout correction circuit of the Hallicrafters. The SR-400 has about 200W output, twice that of the KWM-2. To accomplish this, the SR-400 uses TV sweep tubes, which are now expensive to replace, while the 6146's used in the KWM-2 are comparitively cheap. A big advantage of the SR-400, to a DXer, is the accessory external VFO, model HA-20, which allows for dual frequency receive. I think that was a unique feature in the vacuum tube days. Both the SR-400 and KWM-2 are high quality units, although the paint job on my Hallicrafters cabinet hasn't held up as well as the Collins. Both sound smooth on SSB transmit and receive. The Collins does not have receiver incremental tuning (RIT). The SR-400 has a great advantage on c.w., since it has a narrow c.w. bandwidth available. The KWM-2's c.w. performance is just terrible - it keys an audio tone into the mic circuit to generate a carrier. Collins used a 1.3 KHz audio tone oscillator, so you will need to listen to a received 1.3 KHz c.w. signal to be zero beat. On c.w you will generate a weak carrier frequency as well as your desired frequency, and a weak keyed spur about 2.6 KHz down the band, at a strength determined solely by the mechanical filter rejection. 73, Ed Knobloch |
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#3
July 5th 04, 02:01 PM
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I had the SR400, SR2000 and several KWM-2s. The Hallicrafters had some cross
mod on 20 meters. Otherwise, a great radios. I think the SR400 also had an RIT (receiver incremental tuning). This is always good to have on SSB and only available on the KWM-2 as a Waters mod kit. 73 Joel "Mauro" wrote in message ... What is a reasonable price for a good working one? Is this a good set? Can it be compared to Drake C-line or Collins KWM-2? Thanks Mauro |
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