ve6pg
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« on: May 27, 2012, 12:40:17 AM » |
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..i have 2 old browning am/ssb rigs...any ideas as to putting these on 6 metres?..23 channels things..
..tim..
..sk..
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...Yes, my name is Tim Smith...sk..
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W4AAB
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« Reply #1 on: May 27, 2012, 02:32:40 PM » |
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Those would be better used on 10 metres. I believe that thete is an article on converting a Lafayette CB to 6 metres in a 1968 or 1969 73 Magazine.
Joe W4AAB
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Pete, WA2CWA
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« Reply #2 on: May 27, 2012, 02:53:25 PM » |
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Actually, probably not a great idea.
1. Receiver front end would have to be somewhat redesigned to cover 6 meters.
2. Depending on crystal synthesizing design, at least one to four crystals would have to be replaced. Choice of crystal(s) would be dependent on what part of the 6 meter band you want to operate. Average cost of crystal $10 to $20 each.
3. Each stage of the transmitter would have to be tailored (new LC's) to work to 50 MHz.
OR
4. Keep 23 channel set as is and build an external roughly 23 MHz transmitting converter. Oscillator/mixer tube(s), driver, and final amp tube(2E26 or 6146). Need a power supply.
OR
5. Browning rigs are still in demand with the CB set collectors. Sell the rigs and use proceeds to fund a "real" 6 meter rig.
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Pete, WA2CWA - "A Cluttered Desk is a Sign of Genius"
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k4kyv
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Don
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« Reply #3 on: May 27, 2012, 02:56:43 PM » |
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Tim,
Has the envelope I sent to you last week arrived yet?
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Don, K4KYV AMI#5 Licensed since 1959 and not happy to be back on AM... Never got off AM in the first place.- - - This message was typed using the DVORAK keyboard layout. http://www.mwbrooks.com/dvorak |
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ve6pg
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« Reply #4 on: May 27, 2012, 06:50:54 PM » |
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..don..nothing, as yet...i'll keep an eye out..thanks..
..ok...so how about converting these things to 10 metres?...i've not found any real info...
tim..
..sk..
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...Yes, my name is Tim Smith...sk..
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W2VW
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« Reply #5 on: May 27, 2012, 11:27:41 PM » |
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Tim,
Has the envelope I sent to you last week arrived yet?
It had little curls on the ends. Is there a problem with emission? |
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Pete, WA2CWA
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« Reply #6 on: May 27, 2012, 11:43:19 PM » |
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..don..nothing, as yet...i'll keep an eye out..thanks..
..ok...so how about converting these things to 10 metres?...i've not found any real info...
tim..
..sk..
What is/are the model number(s)? |
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Pete, WA2CWA - "A Cluttered Desk is a Sign of Genius"
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ve6pg
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« Reply #7 on: May 28, 2012, 05:52:49 AM » |
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LTD by browning...did i offend anyone?..
..sk..
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...Yes, my name is Tim Smith...sk..
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Opcom
Patrick J. / KD5OEI
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« Reply #8 on: May 28, 2012, 08:25:12 AM » |
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Not me.
Maybe you can add a doubler and 50MHz bandpass filter for a new stage after the final, and put an filter/oscillator/mixer up front to down-convert.
Instead of changing crystals you could add a VFO to replace one group of them. I don't know much about it but the one from pongrance.com might be useful or at least worth looking at. Then you are not stuck on definite channels.
It might require more space inside the cabinet. costly but who cares about money when it is fun and games.
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Radio Candelstein
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gerry_w1id
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« Reply #9 on: May 28, 2012, 10:01:49 AM » |
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Even converting to 10 meters is probably not worth the bother due to limitations. Frequency coverage is not contiguous. Every 40th kHz will be missing. Then there is a 20kHz gap between ch22 & 23. Add the hassle of finding crystals plus cost and you can see for yourself whether you want to do this. Radios using heterodyne type synthesizers are the worst of all. There will be 4 crystals to increment channels and 6 to increment range. The best suggestion I can make is for you to find a schematic, study it, and figure the conversion scheme. A couple of sun spots ago I modified a couple of CB radios to 10 meters but that was relatively easy because they used IC synthesizers requiring either the cutting of traces or the addition of jumpers. Oh, and don't forget test equipment.
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K3ZS
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« Reply #10 on: May 28, 2012, 11:34:55 AM » |
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The old Cyber boards and Hygain CB's with 3 crystals were easy to change to 10M. You had to change one of the crystals and repeak everything to get it on 10M. The ones with two crystals or more than three would not be worth converting because of the way the synthesizers operated.
Better off getting a 6M rig rather than trying to convert a CB.
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N9EFJ
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« Reply #11 on: May 28, 2012, 12:11:48 PM » |
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I once converted an old Hy-Gain CB to above 2 meters.
The RF stages were converted by removing turns from the coils
or the small cap builtin to the TOKO coils.
The VCO coil would be usable for 6 meters by removing same.
I've converted many CBs and if you proceed, I'd be glad to help.
Might even make me one. Got a Cybernet board 'round here I think.
Adding 1 or 2 divide by 10 chips at the PLL will give you 1 khz or
100 hz channel spacing. There are 511 channels possible.
Carl
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ve6pg
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« Reply #12 on: June 01, 2012, 04:35:46 PM » |
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...first off...don...got the stuff in the mail...thanks...
...todd...thanks fer ur help...
..sk..
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...Yes, my name is Tim Smith...sk..
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