[Drakelist] R4C PTO Brass Gears replacement

2011-12-17 Thread Rich Hallman - N7TR
Ive had my R4C PTO rebuilt about 8 months ago and the PTO tuning felt great. Before the rebuild it would stick and would have different tightness as I tuned. I hadn't used the rig for a few months and turned it on last night and I have the same issue again. Wanted to know if anyone changed out

[Drakelist] 5 watt levels

2011-12-17 Thread ron
Hello, I wonder if anyone has tried to lower the drive to match 5 watt output level for QRP work. It think Drakes will make a excellent QRP rig. Of course I will run it at normal settings when not qrp'ing. 73 Ron, wb1hga ___ Drakelist mailing

Re: [Drakelist] 5 watt levels

2011-12-17 Thread Don Cunningham
Ron, I would think that the only reliable way to accomplish QRP with the Drake rigs (assuming the 4 line tube rigs mostly) would be to build up a good transmitting attenuator pad and use up the wattage in that pad. Many examples can be found in old Johnson literature designed to let their

Re: [Drakelist] 5 watt levels

2011-12-17 Thread ron
On 12/17/2011 12:41 PM, Don Cunningham wrote: Ron, I would think that the only reliable way to accomplish QRP with the Drake rigs (assuming the 4 line tube rigs mostly) would be to build up a good transmitting attenuator pad and use up the wattage in that pad. Many examples can be found in

Re: [Drakelist] 5 watt levels

2011-12-17 Thread Curt
I used to use the non-inductive resistive T pads between the T4 and amp (a tetrode amp--low drive). Also used that for a little QRP. But recently have been really loving the Anaren monolithic 50 ohm attenuators. They can be had in many ratings and values. I use 10dB 100W. Mounted on a

Re: [Drakelist] R4C PTO Brass Gears replacement

2011-12-17 Thread kc9cdt
Rich, Based on my experience...clean those gears with soap water use a stiff brush to be sure NO old gread, dirt etc is in the very bottem of the teeth. Maybe you have already done this...if so maybe there is still oil in the plastic? 73, Lee -Original Message- From: Rich Hallman

Re: [Drakelist] 5 watt levels

2011-12-17 Thread Kris Merschrod
Hello Ron and Don and everyone, I used my TR-4Cw for QRP work on both CW and SSB. My approach was to tune it up on a dumy load, then through a w-4 watt meter (not really designed for QRP but it was what I had overseas) tune again to match the rig to the antenna (nothing like a Pi-Network on

Re: [Drakelist] 5 watt levels

2011-12-17 Thread Robert Fish
Hi Ron, I asked a similar question recently about SSB QRP with Drake equipment. I think some of the thread applies to CW. As usual, Garey and Jim provided good info. Here's the link: http://www.mail-archive.com/drakelist@zerobeat.net/msg17173.html 73, Bob K6GGO Hello, I wonder if anyone

Re: [Drakelist] R4C PTO Brass Gears replacement

2011-12-17 Thread Paul Christensen
Hi Rich, I agree with you that the metalNylon assemblies seem to have a smoother feeling with less sloppiness. I don't know if the all-Nylon gears degrade over time or if they came that way from Drake. I changed a set to metal/Nylon gears back last spring. I was first going to attempt a

Re: [Drakelist] R4C PTO Brass Gears replacement

2011-12-17 Thread Garey Barrell
Just my opinion, but I think the metal gears are way over valued. I still think they were a cost cutting measure when they ran out of nylon gears near the end of the production cycle. Nylon gears themselves are inexpensive, but the tooling to manufacture them is quite expensive. If the