This follows Hugo VE3KTN’s article in this issue of the Rambler about purchasing and using a Leo Bodnar GPS Disciplined Oscillator as ham shack frequency standard. For those members of the OVMRC that are fortunate to own an IC-9700 2m, 70cm and 23cm multi-mode and full duplex cross band transceiver, I want to bring to your attention a specially designed inductor signal injection kit complete with a mounting hardware that is available as well from Leo Bodnar designed specifically for the 9700 that works with the GSPDO described in Hugo’s article. The IC-9700 uses a TCXO (temperature compensated crystal oscillator) operating at a frequency of 49.152 MHz as the master oscillator to the radio. The accuracy and stability of this oscillator affects the overall frequency accuracy and stability of the transmit and receive frequencies selected on the radio. By using this signal inductive coupling kit along with the Leo Bodnar programmable “Mini Precision GPS Reference Clock” product, the TCXO of the 9700 locks to the precision and accuracy of GPS signal that is inherently tied to the cesium atomic clocks in every GPS satellite.
This kit is designed to mount an inductor within the TCXO master oscillator compartment of the transceiver without any solder connections and therefore can be subsequently removed with no trace it was ever installed in case the IC-9700 is sent back for warranty repair.
I use the Leo Bodnar “Mini Precision GPS reference Clock” along with TXCO signal injection kit with my IC-9700 and I’d be happy to provide a high accuracy drift free signal on the 2m, 70cm or 23cm bands for anybody that wants to calibrate the frequency dial of their radio. Also, the use of this stabilization kit is necessary to anyone wanting to use the likes of the WSPR mode on the VHF and UHF bands where the stability (as to frequency drift) may not allow it otherwise. The WSPR mode will typically only allow 4 Hz drift during the transmission cycle otherwise, it may not decode.
Together, the Reference Injection Board and he Mini GPS programmable output GPSDO complete with cables and mounting screws can be purchased from Leo Bodnar for $197.79 USD less shipping and tax.
Reference :
https://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=379
73, Norm, VE3LC