Cross-Band Repeat - VHFUHF Forum at eHam.net

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eHam.net Forum : VHFUHF : Cross-Band Repeat

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Cross-Band Repeat	Reply
by KI6DYR on September 10, 2006	Mail this to a friend!
I live in a deep hole in the mountains making it hard to reach a particular 6 meter repeater that I really enjoy using. I can hit it from my base but I can't hold the distant repeater from my 50 watt mobile of decent design. I've thought of using my FT8900r to cross-band using a beam pointed at the repeater and an omni at the top of my tower to cover the deep valley that I am in. Is this type of cross-banding allowed? Intermittent? Fulltime? Can I use 2 meters for the better propagation or do I have to use 440? I find cross-banding confusing because I've read in numerous places that it is allowed with no restrictions, while in other places I read contradictions.

RE: Cross-Band Repeat	Reply
by KG4RUL on September 11, 2006	Mail this to a friend!
Crossband repeaters are legal to use IF transmissions are properly identified at the required intervals. The rub is that no radios are being made that have the capability to dot this properly. For Example: You key the mike on your 70cm HT and send a signal to your crossband radio which repeats it on 6M to the distant repeater. You can supply your call by voice at 10 minute intervals. That transmission path is properly ID'ed. When you are in a QSO, transmissions to your crossband radio properly are identified when the distant 6M repeater IDs. Again the rub is that the 6M signal which is repeated by your crossband radio never gets ID'ed properly. Is is legal? NO, per Riley Hollingsworth. Can you get away with it? Let your conscience be your guide. Dennis KG4RUL

RE: Cross-Band Repeat	Reply
by WB2WIK on September 11, 2006	Mail this to a friend!
There's more to it than simply identifying transmissions. 97.213(a) states that telecommand (remote control of an amateur radio station) may be wired or wireless, but if wireless, must follow rule 97.201(b) for Auxiliary Stations. 97.201(b) specifically states Auxiliary operation can only be above 222.150 MHz. Thus, you should not remotely control a 6m station using a 2m station. You can lawfully remote control a 6m station using a station on 135cm (222.150+) or higher frequency bands such as 70cm, etc. As far as I know, this is the main "rub," and the reason that the Kenwood Sky Command feature on the TS-2000 etc. is not allowed in the U.S. -- because it was set up to use the two meter band to remotely control the rig. If Kenwood had picked 222 or 440 MHz for this, it would have been fine. Maybe a better "expert" will come along and correct this, but as far as I know, if you're controlling your home 6m station via wireless remote access in the amateur bands, you need to do that on 135cm or higher frequency bands. You can definitely install a "repeater controller" on your home station rig (6m) to properly identify it, add a time-out timer, and do all the other stuff required of remotely operated stations. WB2WIK/6

RE: Cross-Band Repeat	Reply
by KE4DRN on September 11, 2006	Mail this to a friend!
hi, what make/model 6m antenna are you using on the car/truck ? 73 james

RE: Cross-Band Repeat	Reply
by KI6DYR on September 12, 2006	Mail this to a friend!
I'm not sure how this relates to the issue, but I use a Larsen 5/8 wave base loaded center-mounted in the middle of a Dodge Durango cut for 52mhz. I am more than 50 miles from the repeater and down in a bowl. I cannot hit the repeater while mobile in my home area. I can hit the repeater from the base.

RE: Cross-Band Repeat	Reply
by KI6DYR on September 12, 2006	Mail this to a friend!
WIK/6 I thought that your answer was right on target.

RE: Cross-Band Repeat	Reply
by KG4RUL on September 13, 2006	Mail this to a friend!
Another take on this is the "Locked Repeater" function of my Kenwood TS2000X vs it's "Crossband Repeater" function. In "Crossband Repeater" mode, it functions "full duplex". A signal received on VHF is retransmitted on UHF and vice versa. In "Lockd Repeater" mode, a signal received on UHF is transmitted on VHF but NOT the reverse! This would be a great mode to use when you are able to receive a VHF repeater adequately but are having trouble getting to the repeater. A dual band radio receiving on the VHF frequency lets you listen to the repeater while accessing it on UHF via the TS2000X. And, as a bonus, you can manually ID each transmission! Dennis KG4RUL

RE: Cross-Band Repeat	Reply
by WB2WIK on September 13, 2006	Mail this to a friend!
KI6DYR, which 6m repeater are you trying to work? Most of the So. Cal. repeaters are full quieting here on the west side where I live. I'm only 892 feet a.s.l., but nothing close blocking us in. After living all over the area, we actually "picked" this spot because it was flat enough, and set back far enough, to be a good radio site. My last house on the southern slope of Oat Mountain was much higher but terrible!

RE: Cross-Band Repeat	Reply
by KI6DYR on September 14, 2006	Mail this to a friend!
I love the LXX network that has inputs and remote base feeds galore. It covers much of Southern California and links to Las Vegas and Texas as well. Pretty impressive. I come in on 53.58 107.2 (Blueridge/Wrightwood) and can also hit Mt. Harvard 53.62 107.2 reportedly as well as Blueridge. San Diego inputs on 53.58 as well. I'd like if legal and with their permission to provide a remote base link from Bear Valley to the system. There are a lot of hams up here that aren't 6m capable either because of equipment or antennas and the fact that it's tough getting out of the Hole in Paradise. My thought was inputting from 2m but I recalled reading about links above 220 only. Cross-banding threw me for a loop. Yaesu and others add the feature but don't restrict the rig from using 2m. So -- 440 it is. I have a spare FT-8900 that I could put into x-band, but I don't want to 1) break any laws, and 2) do so without their permission. If permitted I'd use a 6m 3-el beam and a decent 440 antenna. Both would have to be used through a duplexer for separate antennas. Some loss but doable. I'm sure that if it were a fulltime link I'd have to go through coordination, but I'm not positive. If I didn't mention it, I live in Big Bear Lake (Fawnskin).

RE: Cross-Band Repeat	Reply
by KI6DYR on September 14, 2006	Mail this to a friend!
I should add that I have had no discussions with LXX and this is simply hypothetical at this point.

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