[Drakelist] FS: Drake Sherwood C-Line
Complete station. R-4C with all three Drake crystal filters, Sherwood custom front panel switch for the USB/LSB CF-2K/8 filter pair, Sherwood CF-600/6 first IF roofing filter, three ten meter crystals, super clean and ready to go. T-4XC in similar condition, full output. AC-4 working good with AC-4R rebuild kit still sealed (never got around to putting it in); MS-4 speaker; original Drake cables with new Lo-Loss PTO and INJ cables; all recently serviced and tweaked by Gary Poland, W8PU. Hi-Res detailed photos at http://s272.photobucket.com/albums/jj167/wa0epw/?start=all . I have over $1,500 invested in this station and will consider offers of $900 or better plus packing/shipping from St. Paul MN. Contact off-list at ctrpoint2004(a)yahoo.com . Thank you 73. Michael WA0EPW___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
[Drakelist] spare part
Hello, I have a 500 hertz crystal filter, for the TR-4CW, if anyone needs it as a spare or ??? $30.00 plus shipping. Tnx 73, Bill___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] spare part
Do you know if this will also fit the TR6? Both have 9 MHz if at the filter point. If so, I would be interested. David Assaf, III W5XU From: drakelist-boun...@zerobeat.net [mailto:drakelist-boun...@zerobeat.net] On Behalf Of Bill Frost Sent: Tuesday, June 14, 2011 3:50 PM To: Drakelist group Subject: [Drakelist] spare part Hello, I have a 500 hertz crystal filter, for the TR-4CW, if anyone needs it as a spare or ??? $30.00 plus shipping. Tnx 73, Bill No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.449 / Virus Database: 271.1.1/3704 - Release Date: 06/14/11 18:34:00 ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] spare part
I have Drake B line for sale here is the story The R-4B ia in excalent
shape both cosmeitcly and working. It is a perfict working receiver. the
T-4XB just developed an AC noise on the carrier and dropped in power?
The cosmetics is great both rigs are very good lookers. The AC-4 power
suply and MS-4 speaker are in good working condition.
I am looking for $600.00 for the whole station. go to QRZ and look up
KB2DHG you will see them there.
On Tue, Jun 14, 2011 at 9:24 PM, David wrote:
Do you know if this will also fit the TR6? Both have 9 MHz if at the
filter point. If so, I would be interested.
David Assaf, III
W5XU
From: drakelist-boun...@zerobeat.net
[mailto:drakelist-boun...@zerobeat.net] On Behalf Of Bill Frost
Sent: Tuesday, June 14, 2011 3:50 PM
To: Drakelist group
Subject: [Drakelist] spare part
Hello,
I have a 500 hertz crystal filter, for the TR-4CW, if anyone needs it as
a spare or ??? $30.00 plus shipping.
Tnx 73, Bill
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.449 / Virus Database: 271.1.1/3704 - Release Date: 06/14/11
18:34:00
--
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[Drakelist] Collins and Drake Compared
For the past few weeks, I've been comparing receive structures between the Drake 4 series and Collins 75S-3 series. I'm surprised by the similarities - as well as the differences. Some obvious differences: - Mechanical IF filter versus crystal or LC filtering; -160m coverage ability; - Tunable BFO versus PBT; - Q Mult in 75S-3. Similarities: - PTO VFO with 1 kHz dial markings; - Preselector (similar octave structure?); - Crystal 1st LO (unlike early JA receivers during the same time period); - Audio power and AF driver stages similar to R-4B; - Extensive use of RCA jacks, including RF IN; Collins, like Drake, used PBT in the 1950s and I'm curious why it was abandoned in the S line. Perhaps too complex to use among commercial/military/amateur users? In essence, the least common operating denominator wins? Both series use the chassis for the filament return, although Collins used four (!) heater lines in the 75S3. I found Collins' treatment of the headphone jack quite interesting. They use a resistive divider network to load the output line during periods of high Z loads. Seems wholly unnecessary given that the 4-ohm transformer tap is routed through the H/P jack's N/C contacts and the 500-ohm tap makes use of the divider in which one resistor is bypassed during insertion of headphones. My recollection of the S line tuning feel is sketchy but I recall a superbly designed VFO tuning mechanism onto the PTO -- probably at least as mechanically well designed as the those found in the Drake 4 series? Perhaps the Collins S line has a slight edge with quality of construction and components although I've not taken a look at whether the 75S-3 uses ceramic switch wafers versus Phenolic -- and whether they used Teflon harness wiring (where Drake fails).I have nearly no operating time with an S line and I was considering a purchase. But based on what I'm seeing in the schematics, I'm not impressed enough to unload my bank account for a S line. This may seem like a trolling exercise to some, but I find the comparison between the two products to be very interesting especially when comparing cost and evolution of their product lines. Thoughts on the matter very much appreciated. Paul, W9AC ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
Re: [Drakelist] Collins and Drake Compared
- Original Message - From: Paul Christensen w...@arrl.net To: drakelist@zerobeat.net Sent: Tuesday, June 14, 2011 7:30 PM Subject: [Drakelist] Collins and Drake Compared For the past few weeks, I've been comparing receive structures between the Drake 4 series and Collins 75S-3 series. I'm surprised by the similarities - as well as the differences. Some obvious differences: - Mechanical IF filter versus crystal or LC filtering; -160m coverage ability; - Tunable BFO versus PBT; - Q Mult in 75S-3. Similarities: - PTO VFO with 1 kHz dial markings; - Preselector (similar octave structure?); - Crystal 1st LO (unlike early JA receivers during the same time period); - Audio power and AF driver stages similar to R-4B; - Extensive use of RCA jacks, including RF IN; Collins, like Drake, used PBT in the 1950s and I'm curious why it was abandoned in the S line. Perhaps too complex to use among commercial/military/amateur users? In essence, the least common operating denominator wins? Both series use the chassis for the filament return, although Collins used four (!) heater lines in the 75S3. I found Collins' treatment of the headphone jack quite interesting. They use a resistive divider network to load the output line during periods of high Z loads. Seems wholly unnecessary given that the 4-ohm transformer tap is routed through the H/P jack's N/C contacts and the 500-ohm tap makes use of the divider in which one resistor is bypassed during insertion of headphones. My recollection of the S line tuning feel is sketchy but I recall a superbly designed VFO tuning mechanism onto the PTO -- probably at least as mechanically well designed as the those found in the Drake 4 series? Perhaps the Collins S line has a slight edge with quality of construction and components although I've not taken a look at whether the 75S-3 uses ceramic switch wafers versus Phenolic -- and whether they used Teflon harness wiring (where Drake fails).I have nearly no operating time with an S line and I was considering a purchase. But based on what I'm seeing in the schematics, I'm not impressed enough to unload my bank account for a S line. This may seem like a trolling exercise to some, but I find the comparison between the two products to be very interesting especially when comparing cost and evolution of their product lines. Thoughts on the matter very much appreciated. Paul, W9AC I would be interested in hearing from others who have both systems. I do find Drake gear difficult to work on because of the very short leads, use of component leads as connection wires, and low-temperature insulation. I just have trouble with the very confined spaces. There is good reason for the short leads and it shows up in the performance of the gear, nonetheless, its difficult to work on. I don't know that Collins is any better. What I remember is that Collins made a big splash with the S line stuff when it came out and then Drake blew them out of the water with about similar performance (sometimes better) at maybe 2/3rds the price. -- Richard Knoppow Los Angeles WB6KBL dickb...@ix.netcom.com ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
